{"id":10329,"date":"2026-08-01T15:40:10","date_gmt":"2026-08-01T15:40:10","guid":{"rendered":"https:\/\/ghinox.opuspixelum.net\/?page_id=1288"},"modified":"2026-09-05T05:10:58","modified_gmt":"2026-09-05T05:10:58","slug":"sus-409l","status":"publish","type":"page","link":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/sus-409l\/","title":{"rendered":"SUS 409L"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"10329\" class=\"elementor elementor-10329 elementor-1288\" data-elementor-settings=\"{&quot;element_pack_global_tooltip_width&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_padding&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true}}\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ea80418 e-flex e-con-boxed e-con e-parent\" data-id=\"ea80418\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4fd0ff5 elementor-widget elementor-widget-text-editor\" data-id=\"4fd0ff5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>STAINLESS STEEL GRADE<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-843f124 elementor-widget elementor-widget-heading\" data-id=\"843f124\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">SUS 409L Stainless Steel<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3bb6a78 elementor-widget elementor-widget-text-editor\" data-id=\"3bb6a78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"258\" data-end=\"461\">SUS 409L is a low-carbon, titanium-stabilized ferritic stainless steel developed for applications requiring economical corrosion protection, weldability, and resistance to elevated-temperature oxidation.<\/p><p data-start=\"463\" data-end=\"694\">Containing approximately 10.5\u201311.75% chromium, SUS 409L provides better corrosion and oxidation resistance than ordinary carbon steel while remaining more economical than higher-chromium or nickel-containing stainless steel grades.<span style=\"font-style: inherit; font-weight: inherit;\">It is used primarily for automotive exhaust pipes, mufflers, catalytic-converter components, heat shields, agricultural equipment, furnace parts, and other components exposed to exhaust gases and repeated heating and cooling.<\/span><\/p><p data-start=\"923\" data-end=\"1009\">SUS 409L is magnetic and is commonly associated with <strong data-start=\"976\" data-end=\"990\">UNS S40903<\/strong> and <strong data-start=\"995\" data-end=\"1008\">EN 1.4512<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9bbfn4k elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9bbfn4k\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-bf6d5f6\" data-id=\"bf6d5f6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-affa6ba elementor-widget elementor-widget-heading\" data-id=\"affa6ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">MATERIAL INTRODUCTION<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5bc1bc elementor-widget elementor-widget-heading\" data-id=\"f5bc1bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 409L Stainless Steel Overview<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-928f6f9 elementor-widget elementor-widget-text-editor\" data-id=\"928f6f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"1054\" data-end=\"1283\">SUS 409L is part of the ferritic stainless steel family. Its microstructure gives it magnetic properties, relatively low thermal expansion, useful heat conductivity, and lower material cost than austenitic grades such as SUS 304.<\/p><p data-start=\"1285\" data-end=\"1485\">Titanium stabilizes carbon and nitrogen within the steel. This helps reduce sensitization, improve weld-area performance, and maintain the material\u2019s properties during fabrication and thermal cycling.<\/p><p data-start=\"1487\" data-end=\"1891\">SUS 409L was developed primarily for automotive exhaust applications rather than decorative or severely corrosive environments. World Stainless identifies Type 409 as a grade originally designed for automotive exhaust silencers and other applications where minor localized corrosion may be acceptable. <a class=\"decorated-link\" href=\"https:\/\/worldstainless.org\/wp-content\/uploads\/2025\/12\/Ferritic_Stainless_Steels.pdf?utm_source=chatgpt.com\" target=\"_new\" rel=\"noopener nofollow\" data-start=\"1789\" data-end=\"1891\">World Stainless<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6c57c32\" data-id=\"6c57c32\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7e2b2ee elementor-widget elementor-widget-image\" data-id=\"7e2b2ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-automotive-exhaust-applications-1000x1000-1.jpg\" class=\"attachment-full size-full wp-image-1306\" alt=\"sus 409l automotive exhaust applications 1000x1000\" srcset=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-automotive-exhaust-applications-1000x1000-1.jpg 1000w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-automotive-exhaust-applications-1000x1000-1-300x300.jpg 300w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-automotive-exhaust-applications-1000x1000-1-150x150.jpg 150w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-automotive-exhaust-applications-1000x1000-1-768x768.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-43cb9d5 e-flex e-con-boxed e-con e-parent\" data-id=\"43cb9d5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d1d031f elementor-widget elementor-widget-heading\" data-id=\"d1d031f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 409L Equivalent Grades<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c95241 elementor-widget elementor-widget-text-editor\" data-id=\"5c95241\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-equivalent {\n    width: 100%;\n    margin: 32px 0;\n    color: #f1f1f1;\n    font-family: inherit;\n  }\n\n  .gh-409l-equivalent * {\n    box-sizing: border-box;\n  }\n\n  .gh-409l-equivalent__scroll {\n    width: 100%;\n    overflow-x: auto;\n    border: 1px solid #353535;\n    background: #111113;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .gh-409l-equivalent table {\n    width: 100%;\n    min-width: 520px;\n    margin: 0;\n    border: 0;\n    border-collapse: collapse;\n  }\n\n  .gh-409l-equivalent caption {\n    position: absolute;\n    width: 1px;\n    height: 1px;\n    padding: 0;\n    overflow: hidden;\n    clip: rect(0, 0, 0, 0);\n    white-space: nowrap;\n    border: 0;\n  }\n\n  .gh-409l-equivalent th,\n  .gh-409l-equivalent td {\n    padding: 15px 18px;\n    border: 0;\n    border-right: 1px solid #353535;\n    border-bottom: 1px solid #353535;\n    text-align: left;\n    vertical-align: middle;\n    font-size: 14px;\n    line-height: 1.5;\n  }\n\n  .gh-409l-equivalent th:last-child,\n  .gh-409l-equivalent td:last-child {\n    border-right: 0;\n  }\n\n  .gh-409l-equivalent tbody tr:last-child th,\n  .gh-409l-equivalent tbody tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .gh-409l-equivalent thead th {\n    color: #ffffff;\n    background: #171719;\n    font-weight: 700;\n  }\n\n  .gh-409l-equivalent tbody th {\n    width: 40%;\n    color: #ffffff;\n    background: #202022;\n    font-weight: 700;\n  }\n\n  .gh-409l-equivalent tbody td {\n    color: #f4c400;\n    background: #111113;\n    font-weight: 700;\n  }\n\n  .gh-409l-equivalent tbody tr:nth-child(even) td {\n    background: #18181a;\n  }\n\n  .gh-409l-equivalent tbody tr:hover td {\n    background: #222218;\n  }\n\n  .gh-409l-equivalent__note {\n    margin: 11px 0 0;\n    color: #9c9c9c;\n    font-size: 12px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-equivalent th,\n    .gh-409l-equivalent td {\n      padding: 13px 14px;\n      font-size: 13px;\n    }\n  }\n<\/style>\n\n<div class=\"gh-409l-equivalent\">\n  <div\n    class=\"gh-409l-equivalent__scroll\"\n    role=\"region\"\n    aria-label=\"SUS 409L equivalent grades\"\n    tabindex=\"0\"\n  >\n    <table>\n      <caption>\n        SUS 409L equivalent designations under international standards\n      <\/caption>\n\n      <thead>\n        <tr>\n          <th scope=\"col\">Standard<\/th>\n          <th scope=\"col\">Grade Designation<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n        <tr>\n          <th scope=\"row\">JIS<\/th>\n          <td>SUS 409L<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">AISI<\/th>\n          <td>409L<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">ASTM \/ UNS<\/th>\n          <td>Type 409L \/ S40903<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">EN<\/th>\n          <td>1.4512<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">EN Name<\/th>\n          <td>X2CrTi12<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"gh-409l-equivalent__note\">\n    Equivalent designations are broadly comparable but may differ in\n    chemical composition, stabilization requirements, mechanical\n    properties, available product forms, testing, and certification.\n    Confirm the governing material standard before ordering.\n  <\/p>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0b98853 e-flex e-con-boxed e-con e-parent\" data-id=\"0b98853\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c5d31f7 elementor-widget elementor-widget-heading\" data-id=\"c5d31f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Characteristics of SUS 409L<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe14648 elementor-widget elementor-widget-text-editor\" data-id=\"fe14648\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-features {\n    --gh-yellow: #f4c400;\n    --gh-text: #f2f2f2;\n    --gh-muted: #bdbdbd;\n    --gh-card: #151515;\n    --gh-border: #343434;\n\n    width: 100%;\n    margin: 36px 0;\n    color: var(--gh-text);\n    font-family: inherit;\n  }\n\n  .gh-409l-features *,\n  .gh-409l-features *::before,\n  .gh-409l-features *::after {\n    box-sizing: border-box;\n  }\n\n  .gh-409l-features__grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 18px;\n  }\n\n  .gh-409l-feature {\n    position: relative;\n    min-height: 100%;\n    padding: 25px 25px 25px 29px;\n    overflow: hidden;\n    background: var(--gh-card);\n    border: 1px solid var(--gh-border);\n    transition:\n      transform 0.25s ease,\n      border-color 0.25s ease,\n      background-color 0.25s ease;\n  }\n\n  .gh-409l-feature::before {\n    position: absolute;\n    top: 0;\n    bottom: 0;\n    left: 0;\n    width: 4px;\n    background: var(--gh-yellow);\n    content: \"\";\n  }\n\n  .gh-409l-feature:hover {\n    transform: translateY(-3px);\n    border-color: rgba(244, 196, 0, 0.6);\n    background: #1a1a18;\n  }\n\n  .gh-409l-feature__top {\n    display: flex;\n    align-items: flex-start;\n    gap: 15px;\n  }\n\n  .gh-409l-feature__number {\n    display: inline-flex;\n    flex: 0 0 38px;\n    align-items: center;\n    justify-content: center;\n    width: 38px;\n    height: 38px;\n    color: #111111;\n    background: var(--gh-yellow);\n    border-radius: 50%;\n    font-size: 13px;\n    font-weight: 800;\n    line-height: 1;\n  }\n\n  .gh-409l-feature__content {\n    min-width: 0;\n  }\n\n  .gh-409l-feature__title {\n    margin: 1px 0 9px;\n    color: #ffffff;\n    font-size: 18px;\n    font-weight: 700;\n    line-height: 1.35;\n  }\n\n  .gh-409l-feature__description {\n    margin: 0;\n    color: var(--gh-muted);\n    font-size: 14px;\n    line-height: 1.7;\n  }\n\n  .gh-409l-feature--wide {\n    grid-column: 1 \/ -1;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-features__grid {\n      grid-template-columns: 1fr;\n      gap: 14px;\n    }\n\n    .gh-409l-feature,\n    .gh-409l-feature--wide {\n      grid-column: auto;\n    }\n\n    .gh-409l-feature {\n      padding: 21px 19px 21px 23px;\n    }\n\n    .gh-409l-feature__top {\n      gap: 12px;\n    }\n\n    .gh-409l-feature__number {\n      flex-basis: 34px;\n      width: 34px;\n      height: 34px;\n      font-size: 12px;\n    }\n\n    .gh-409l-feature__title {\n      font-size: 17px;\n    }\n\n    .gh-409l-feature__description {\n      font-size: 13px;\n    }\n  }\n\n  @media (prefers-reduced-motion: reduce) {\n    .gh-409l-feature {\n      transition: none;\n    }\n\n    .gh-409l-feature:hover {\n      transform: none;\n    }\n  }\n<\/style>\n\n<section\n  class=\"gh-409l-features\"\n  aria-label=\"Key characteristics of SUS 409L stainless steel\"\n>\n  <div class=\"gh-409l-features__grid\">\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">01<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Designed for Automotive Exhaust Systems\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            SUS 409L is widely used for exhaust pipes, mufflers,\n            catalytic-converter shells, heat shields, and related\n            components exposed to hot exhaust gases.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">02<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Titanium-Stabilized Composition\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            Titanium combines with carbon and nitrogen, helping reduce\n            sensitization and improve material performance around welded\n            and heat-affected areas.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">03<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Good Oxidation Resistance\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            SUS 409L provides useful resistance to oxidation in dry air\n            and exhaust-gas environments at elevated temperatures.\n            Actual capability depends on temperature, exposure time,\n            atmosphere, loading, and thermal cycling.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">04<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Good Thermal-Fatigue Performance\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            Its relatively low thermal expansion helps reduce\n            distortion and thermal stress during repeated heating and\n            cooling cycles.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">05<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Suitable Weldability\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            Its low-carbon, titanium-stabilized composition supports\n            welding for exhaust-system assemblies. Heat input,\n            shielding, contamination control, and joint design still\n            require appropriate process control.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">06<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Good Formability\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            SUS 409L can be bent, stamped, roll-formed, and fabricated\n            into exhaust pipes, shells, brackets, shields, and other\n            formed components.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">07<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Cost-Effective Ferritic Grade\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            Its relatively low chromium content and minimal nickel\n            content generally make SUS 409L more economical than SUS\n            430, SUS 304, and SUS 316L.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">08<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Naturally Magnetic\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            SUS 409L has a ferritic microstructure and is naturally\n            magnetic.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"gh-409l-feature gh-409l-feature--wide\">\n      <div class=\"gh-409l-feature__top\">\n        <span class=\"gh-409l-feature__number\" aria-hidden=\"true\">09<\/span>\n\n        <div class=\"gh-409l-feature__content\">\n          <h3 class=\"gh-409l-feature__title\">\n            Moderate Corrosion Resistance\n          <\/h3>\n\n          <p class=\"gh-409l-feature__description\">\n            SUS 409L provides better corrosion protection than ordinary\n            carbon steel but less than SUS 430 or SUS 304. Surface\n            staining or localized rust may occur in wet, salty, or\n            aggressive environments without necessarily preventing\n            functional service.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/article>\n\n  <\/div>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2a4aa00 e-flex e-con-boxed e-con e-parent\" data-id=\"2a4aa00\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-01e359b elementor-widget elementor-widget-heading\" data-id=\"01e359b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 409L Chemical Composition<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1f333d elementor-widget elementor-widget-text-editor\" data-id=\"f1f333d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-chemical {\n    width: 100%;\n    margin: 32px 0;\n    color: #f1f1f1;\n    font-family: inherit;\n  }\n\n  .gh-409l-chemical * {\n    box-sizing: border-box;\n  }\n\n  .gh-409l-chemical__scroll {\n    width: 100%;\n    overflow-x: auto;\n    border: 1px solid #353535;\n    background: #111113;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .gh-409l-chemical table {\n    width: 100%;\n    min-width: 660px;\n    margin: 0;\n    border: 0;\n    border-collapse: collapse;\n  }\n\n  .gh-409l-chemical caption {\n    position: absolute;\n    width: 1px;\n    height: 1px;\n    padding: 0;\n    overflow: hidden;\n    clip: rect(0, 0, 0, 0);\n    white-space: nowrap;\n    border: 0;\n  }\n\n  .gh-409l-chemical th,\n  .gh-409l-chemical td {\n    padding: 15px 18px;\n    border: 0;\n    border-right: 1px solid #353535;\n    border-bottom: 1px solid #353535;\n    text-align: left;\n    vertical-align: middle;\n    font-size: 14px;\n    line-height: 1.5;\n  }\n\n  .gh-409l-chemical th:last-child,\n  .gh-409l-chemical td:last-child {\n    border-right: 0;\n  }\n\n  .gh-409l-chemical tbody tr:last-child th,\n  .gh-409l-chemical tbody tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .gh-409l-chemical thead th {\n    color: #ffffff;\n    background: #171719;\n    font-weight: 700;\n  }\n\n  .gh-409l-chemical tbody th {\n    color: #ffffff;\n    background: #202022;\n    font-weight: 700;\n  }\n\n  .gh-409l-chemical tbody td {\n    color: #c5c5c5;\n    background: #111113;\n  }\n\n  .gh-409l-chemical tbody tr:nth-child(even) td {\n    background: #18181a;\n  }\n\n  .gh-409l-chemical tbody tr:hover td {\n    background: #222218;\n  }\n\n  .gh-409l-chemical .gh-value {\n    color: #f4c400;\n    font-weight: 700;\n  }\n\n  .gh-409l-chemical__note {\n    margin: 11px 0 0;\n    color: #9c9c9c;\n    font-size: 12px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-chemical th,\n    .gh-409l-chemical td {\n      padding: 13px 14px;\n      font-size: 13px;\n    }\n  }\n<\/style>\n\n<div class=\"gh-409l-chemical\">\n  <div\n    class=\"gh-409l-chemical__scroll\"\n    role=\"region\"\n    aria-label=\"SUS 409L chemical composition\"\n    tabindex=\"0\"\n  >\n    <table>\n      <caption>\n        Chemical composition limits for SUS 409L stainless steel\n      <\/caption>\n\n      <thead>\n        <tr>\n          <th scope=\"col\">Element<\/th>\n          <th scope=\"col\">Symbol<\/th>\n          <th scope=\"col\">Minimum (wt.%)<\/th>\n          <th scope=\"col\">Maximum (wt.%)<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n        <tr>\n          <th scope=\"row\">Carbon<\/th>\n          <td>C<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">0.030<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Silicon<\/th>\n          <td>Si<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">1.00<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Manganese<\/th>\n          <td>Mn<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">1.00<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Phosphorus<\/th>\n          <td>P<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">0.040<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Sulfur<\/th>\n          <td>S<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">0.020<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Chromium<\/th>\n          <td>Cr<\/td>\n          <td class=\"gh-value\">10.50<\/td>\n          <td class=\"gh-value\">11.75<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Nickel<\/th>\n          <td>Ni<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">0.50<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Nitrogen<\/th>\n          <td>N<\/td>\n          <td>\u2014<\/td>\n          <td class=\"gh-value\">0.030<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Titanium<\/th>\n          <td>Ti<\/td>\n          <td class=\"gh-value\">6 \u00d7 (C + N)<\/td>\n          <td class=\"gh-value\">0.50<\/td>\n        <\/tr>\n\n        <tr>\n          <th scope=\"row\">Iron<\/th>\n          <td>Fe<\/td>\n          <td colspan=\"2\" class=\"gh-value\">Balance<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"gh-409l-chemical__note\">\n    Titanium is used to stabilize carbon and nitrogen. Chemical limits,\n    including sulfur and titanium requirements, may vary among JIS,\n    ASTM, EN, and individual mill specifications. Final composition\n    should be confirmed using the governing material standard and Mill\n    Test Certificate.\n  <\/p>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-53a9c91 e-flex e-con-boxed e-con e-parent\" data-id=\"53a9c91\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15b9ae5 elementor-widget elementor-widget-heading\" data-id=\"15b9ae5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 409L Mechanical Properties<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25e75f0 elementor-widget elementor-widget-text-editor\" data-id=\"25e75f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-mechanical {\n    margin: 32px 0;\n    color: #f5f5f5;\n    font-family: inherit;\n  }\n\n  .gh-409l-mechanical .section-intro {\n    max-width: 900px;\n    margin: 0 0 20px;\n    color: #c8c8c8;\n    font-size: 16px;\n    line-height: 1.75;\n  }\n\n  .gh-409l-mechanical .table-wrapper {\n    overflow-x: auto;\n    border: 1px solid #353535;\n    background: #111113;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .gh-409l-mechanical table {\n    width: 100%;\n    min-width: 680px;\n    border-collapse: collapse;\n  }\n\n  .gh-409l-mechanical th,\n  .gh-409l-mechanical td {\n    padding: 14px 18px;\n    border-right: 1px solid #353535;\n    border-bottom: 1px solid #353535;\n    text-align: left;\n    vertical-align: middle;\n  }\n\n  .gh-409l-mechanical th:last-child,\n  .gh-409l-mechanical td:last-child {\n    border-right: 0;\n  }\n\n  .gh-409l-mechanical tbody tr:last-child th,\n  .gh-409l-mechanical tbody tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .gh-409l-mechanical thead th {\n    background: #171719;\n    color: #ffffff;\n    font-size: 14px;\n    font-weight: 700;\n    text-transform: uppercase;\n    letter-spacing: 0.04em;\n  }\n\n  .gh-409l-mechanical tbody th {\n    width: 40%;\n    background: #202022;\n    color: #ffffff;\n    font-weight: 600;\n  }\n\n  .gh-409l-mechanical tbody td {\n    background: #18181a;\n    color: #f4c400;\n    font-weight: 600;\n  }\n\n  .gh-409l-mechanical tbody tr:hover th,\n  .gh-409l-mechanical tbody tr:hover td {\n    background: #222218;\n  }\n\n  .gh-409l-mechanical .property-note {\n    margin: 14px 0 0;\n    color: #9c9c9c;\n    font-size: 12px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-mechanical .section-intro {\n      font-size: 15px;\n    }\n\n    .gh-409l-mechanical th,\n    .gh-409l-mechanical td {\n      padding: 12px 14px;\n      font-size: 13px;\n    }\n  }\n<\/style>\n\n<section class=\"gh-409l-mechanical\">\n  <p class=\"section-intro\">\n    Annealed SUS 409L stainless steel provides moderate strength, useful\n    ductility, and good formability for automotive exhaust systems, heat\n    shields, mufflers, fabricated tubing, and other thermally cycled components.\n  <\/p>\n\n  <div\n    class=\"table-wrapper\"\n    role=\"region\"\n    aria-label=\"SUS 409L mechanical properties\"\n    tabindex=\"0\"\n  >\n    <table>\n      <thead>\n        <tr>\n          <th scope=\"col\">Mechanical Property<\/th>\n          <th scope=\"col\">Requirement<\/th>\n          <th scope=\"col\">Unit<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n        <tr>\n          <th scope=\"row\">0.2% Proof Strength<\/th>\n          <td>&ge;170<\/td>\n          <td>MPa (N\/mm\u00b2)<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Tensile Strength<\/th>\n          <td>&ge;380<\/td>\n          <td>MPa (N\/mm\u00b2)<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Elongation<\/th>\n          <td>&ge;20<\/td>\n          <td>%<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Rockwell Hardness<\/th>\n          <td>&le;88<\/td>\n          <td>HRB<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Vickers Hardness<\/th>\n          <td>&le;200<\/td>\n          <td>HV<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"property-note\">\n    Reference values generally apply to annealed flat products. Mechanical\n    properties vary according to product form, thickness, heat treatment,\n    processing condition, test direction, and governing specification. Confirm\n    final requirements using the applicable standard and material test\n    certificate.\n  <\/p>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fddd647 e-flex e-con-boxed e-con e-parent\" data-id=\"fddd647\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3b1745f elementor-widget elementor-widget-heading\" data-id=\"3b1745f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Physical Properties of SUS 409L<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e9d2e0 elementor-widget elementor-widget-text-editor\" data-id=\"3e9d2e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-physical {\n    margin: 32px 0;\n    color: #f5f5f5;\n    font-family: inherit;\n  }\n\n  .gh-409l-physical .section-intro {\n    max-width: 900px;\n    margin: 0 0 20px;\n    color: #c8c8c8;\n    font-size: 16px;\n    line-height: 1.75;\n  }\n\n  .gh-409l-physical .table-wrapper {\n    overflow-x: auto;\n    border: 1px solid #353535;\n    background: #111113;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .gh-409l-physical table {\n    width: 100%;\n    min-width: 680px;\n    border-collapse: collapse;\n  }\n\n  .gh-409l-physical th,\n  .gh-409l-physical td {\n    padding: 14px 18px;\n    border-right: 1px solid #353535;\n    border-bottom: 1px solid #353535;\n    text-align: left;\n    vertical-align: middle;\n  }\n\n  .gh-409l-physical th:last-child,\n  .gh-409l-physical td:last-child {\n    border-right: 0;\n  }\n\n  .gh-409l-physical tbody tr:last-child th,\n  .gh-409l-physical tbody tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .gh-409l-physical thead th {\n    background: #171719;\n    color: #ffffff;\n    font-size: 14px;\n    font-weight: 700;\n    text-transform: uppercase;\n    letter-spacing: 0.04em;\n  }\n\n  .gh-409l-physical tbody th {\n    width: 42%;\n    background: #202022;\n    color: #ffffff;\n    font-weight: 600;\n  }\n\n  .gh-409l-physical tbody td {\n    background: #18181a;\n    color: #f4c400;\n    font-weight: 600;\n  }\n\n  .gh-409l-physical tbody tr:hover th,\n  .gh-409l-physical tbody tr:hover td {\n    background: #222218;\n  }\n\n  .gh-409l-physical .property-note {\n    margin: 14px 0 0;\n    color: #9c9c9c;\n    font-size: 12px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-physical .section-intro {\n      font-size: 15px;\n    }\n\n    .gh-409l-physical th,\n    .gh-409l-physical td {\n      padding: 12px 14px;\n      font-size: 13px;\n    }\n  }\n<\/style>\n\n<section class=\"gh-409l-physical\">\n  <p class=\"section-intro\">\n    SUS 409L is a ferritic stainless steel with relatively high thermal\n    conductivity and low thermal expansion compared with austenitic grades.\n    These properties support its use in automotive exhaust systems, heat\n    shields, mufflers, furnace components, and other thermally cycled parts.\n  <\/p>\n\n  <div\n    class=\"table-wrapper\"\n    role=\"region\"\n    aria-label=\"Physical properties of SUS 409L stainless steel\"\n    tabindex=\"0\"\n  >\n    <table>\n      <thead>\n        <tr>\n          <th scope=\"col\">Physical Property<\/th>\n          <th scope=\"col\">Reference Value<\/th>\n          <th scope=\"col\">Unit<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n        <tr>\n          <th scope=\"row\">Density<\/th>\n          <td>Approx. 7.6<\/td>\n          <td>g\/cm\u00b3<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Elastic Modulus<\/th>\n          <td>Approx. 200\u2013208<\/td>\n          <td>GPa<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Thermal Conductivity<\/th>\n          <td>Approx. 25\u201326<\/td>\n          <td>W\/m\u00b7K<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Specific Heat Capacity<\/th>\n          <td>Approx. 460<\/td>\n          <td>J\/kg\u00b7K<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Mean Thermal Expansion<\/th>\n          <td>Approx. 11<\/td>\n          <td>\u00b5m\/m\u00b7K<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Electrical Resistivity<\/th>\n          <td>Approx. 0.60<\/td>\n          <td>\u00b5\u03a9\u00b7m<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Magnetic Response<\/th>\n          <td>Magnetic<\/td>\n          <td>\u2014<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"property-note\">\n    Values are approximate room-temperature references and may vary with\n    product form, composition, processing condition, temperature, and testing\n    method. Use the applicable material standard and supplier documentation\n    when physical-property values are required for engineering calculations.\n  <\/p>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e06146f e-flex e-con-boxed e-con e-parent\" data-id=\"e06146f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7659785 elementor-widget elementor-widget-heading\" data-id=\"7659785\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 409L vs. SUS 430<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22d8d22 elementor-widget elementor-widget-text-editor\" data-id=\"22d8d22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-vs-430 {\n    margin: 32px 0;\n    color: #f5f5f5;\n    font-family: inherit;\n  }\n\n  .gh-409l-vs-430 .section-intro {\n    max-width: 900px;\n    margin: 0 0 20px;\n    color: #c8c8c8;\n    font-size: 16px;\n    line-height: 1.75;\n  }\n\n  .gh-409l-vs-430 .table-wrapper {\n    overflow-x: auto;\n    border: 1px solid #353535;\n    background: #111113;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .gh-409l-vs-430 table {\n    width: 100%;\n    min-width: 760px;\n    border-collapse: collapse;\n  }\n\n  .gh-409l-vs-430 th,\n  .gh-409l-vs-430 td {\n    padding: 14px 18px;\n    border-right: 1px solid #353535;\n    border-bottom: 1px solid #353535;\n    text-align: left;\n    vertical-align: top;\n  }\n\n  .gh-409l-vs-430 th:last-child,\n  .gh-409l-vs-430 td:last-child {\n    border-right: 0;\n  }\n\n  .gh-409l-vs-430 tbody tr:last-child th,\n  .gh-409l-vs-430 tbody tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .gh-409l-vs-430 thead th {\n    background: #171719;\n    color: #ffffff;\n    font-size: 14px;\n    font-weight: 700;\n    text-transform: uppercase;\n    letter-spacing: 0.04em;\n  }\n\n  .gh-409l-vs-430 thead th:not(:first-child) {\n    color: #f4c400;\n  }\n\n  .gh-409l-vs-430 tbody th {\n    width: 26%;\n    background: #202022;\n    color: #ffffff;\n    font-weight: 600;\n  }\n\n  .gh-409l-vs-430 tbody td {\n    width: 37%;\n    background: #18181a;\n    color: #d8d8d8;\n    line-height: 1.6;\n  }\n\n  .gh-409l-vs-430 tbody tr:hover th,\n  .gh-409l-vs-430 tbody tr:hover td {\n    background: #222218;\n  }\n\n  .gh-409l-vs-430 .highlight {\n    color: #f4c400;\n    font-weight: 600;\n  }\n\n  .gh-409l-vs-430 .comparison-note {\n    margin: 14px 0 0;\n    color: #9c9c9c;\n    font-size: 12px;\n    line-height: 1.65;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-vs-430 .section-intro {\n      font-size: 15px;\n    }\n\n    .gh-409l-vs-430 th,\n    .gh-409l-vs-430 td {\n      padding: 12px 14px;\n      font-size: 13px;\n    }\n  }\n<\/style>\n\n<section class=\"gh-409l-vs-430\">\n  <p class=\"section-intro\">\n    SUS 409L and SUS 430 are ferritic stainless steels, but they are designed\n    for different service conditions. SUS 409L is commonly selected for welded,\n    thermally cycled exhaust components, while SUS 430 is generally preferred\n    when better general corrosion resistance and decorative appearance are\n    required.\n  <\/p>\n\n  <div\n    class=\"table-wrapper\"\n    role=\"region\"\n    aria-label=\"Comparison of SUS 409L and SUS 430 stainless steel\"\n    tabindex=\"0\"\n  >\n    <table>\n      <thead>\n        <tr>\n          <th scope=\"col\">Feature<\/th>\n          <th scope=\"col\">SUS 409L<\/th>\n          <th scope=\"col\">SUS 430<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n        <tr>\n          <th scope=\"row\">Stainless Steel Family<\/th>\n          <td>Ferritic stainless steel<\/td>\n          <td>Ferritic stainless steel<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Chromium Content<\/th>\n          <td>Approximately <span class=\"highlight\">10.5\u201311.75%<\/span><\/td>\n          <td>Approximately <span class=\"highlight\">16\u201318%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Stabilizing Element<\/th>\n          <td>\n            <span class=\"highlight\">Titanium stabilized<\/span> to support\n            welding and high-temperature service\n          <\/td>\n          <td>Generally supplied without titanium stabilization<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">General Corrosion Resistance<\/th>\n          <td>\n            Moderate; better than carbon steel but surface staining may occur\n          <\/td>\n          <td>\n            Generally <span class=\"highlight\">better than SUS 409L<\/span> in\n            mild atmospheric and indoor environments\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Oxidation and Thermal-Cycling Performance<\/th>\n          <td>\n            Designed for exhaust environments and repeated heating and cooling\n          <\/td>\n          <td>\n            Useful oxidation resistance, but not as specifically optimized for\n            automotive exhaust fabrication\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Weldability<\/th>\n          <td>\n            Good when suitable ferritic stainless steel procedures are used\n          <\/td>\n          <td>\n            Weldable, but heat input and grain growth require careful control\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Surface Appearance<\/th>\n          <td>Usually selected for functional rather than decorative service<\/td>\n          <td>\n            Better suited to visible, polished, and decorative components\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Magnetic Response<\/th>\n          <td>Magnetic<\/td>\n          <td>Magnetic<\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Typical Applications<\/th>\n          <td>\n            Exhaust pipes, mufflers, catalytic-converter shells, heat shields,\n            and industrial exhaust components\n          <\/td>\n          <td>\n            Appliance panels, kitchen equipment, interior trim, architectural\n            components, and decorative parts\n          <\/td>\n        <\/tr>\n        <tr>\n          <th scope=\"row\">Common Selection Reason<\/th>\n          <td>\n            <span class=\"highlight\">Cost-effective exhaust performance<\/span>\n            with good thermal-fatigue resistance\n          <\/td>\n          <td>\n            <span class=\"highlight\">Better appearance and corrosion resistance<\/span>\n            for mildly corrosive environments\n          <\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"comparison-note\">\n    Material selection should consider operating temperature, condensation,\n    chloride exposure, welding requirements, expected appearance, component\n    life, and the applicable engineering specification. Final equivalence and\n    suitability should be confirmed using the governing standard and material\n    test certificate.\n  <\/p>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-28462d4 e-flex e-con-boxed e-con e-parent\" data-id=\"28462d4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba675c4 elementor-widget elementor-widget-heading\" data-id=\"ba675c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Corrosion and Oxidation Resistance of SUS 409L<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6c399b elementor-widget elementor-widget-text-editor\" data-id=\"b6c399b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<style>\n  .gh-409l-resistance {\n    margin: 32px 0;\n    color: #f5f5f5;\n    font-family: inherit;\n  }\n\n  .gh-409l-resistance p {\n    margin: 0;\n    color: #c8c8c8;\n    font-size: 16px;\n    line-height: 1.75;\n  }\n\n  .gh-409l-resistance .resistance-intro {\n    max-width: 920px;\n    margin-bottom: 24px;\n  }\n\n  .gh-409l-resistance .resistance-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 18px;\n  }\n\n  .gh-409l-resistance .resistance-card {\n    position: relative;\n    padding: 24px 24px 24px 28px;\n    overflow: hidden;\n    border: 1px solid #353535;\n    background: #171719;\n  }\n\n  .gh-409l-resistance .resistance-card::before {\n    position: absolute;\n    top: 0;\n    bottom: 0;\n    left: 0;\n    width: 4px;\n    background: #f4c400;\n    content: \"\";\n  }\n\n  .gh-409l-resistance h3 {\n    margin: 0 0 12px;\n    color: #ffffff;\n    font-size: 19px;\n    line-height: 1.35;\n  }\n\n  .gh-409l-resistance ul {\n    margin: 16px 0 0;\n    padding: 0;\n    list-style: none;\n  }\n\n  .gh-409l-resistance li {\n    position: relative;\n    margin: 0 0 10px;\n    padding-left: 20px;\n    color: #d0d0d0;\n    font-size: 15px;\n    line-height: 1.6;\n  }\n\n  .gh-409l-resistance li:last-child {\n    margin-bottom: 0;\n  }\n\n  .gh-409l-resistance li::before {\n    position: absolute;\n    top: 0.65em;\n    left: 0;\n    width: 7px;\n    height: 7px;\n    border-radius: 50%;\n    background: #f4c400;\n    content: \"\";\n  }\n\n  .gh-409l-resistance .highlight {\n    color: #f4c400;\n    font-weight: 600;\n  }\n\n  .gh-409l-resistance .resistance-note {\n    margin-top: 18px;\n    padding: 18px 20px;\n    border: 1px solid #353535;\n    background: #111113;\n  }\n\n  .gh-409l-resistance .resistance-note p {\n    color: #a8a8a8;\n    font-size: 13px;\n    line-height: 1.7;\n  }\n\n  @media (max-width: 767px) {\n    .gh-409l-resistance .resistance-grid {\n      grid-template-columns: 1fr;\n    }\n\n    .gh-409l-resistance p {\n      font-size: 15px;\n    }\n\n    .gh-409l-resistance .resistance-card {\n      padding: 20px 20px 20px 24px;\n    }\n\n    .gh-409l-resistance h3 {\n      font-size: 18px;\n    }\n\n    .gh-409l-resistance li {\n      font-size: 14px;\n    }\n  }\n<\/style>\n\n<section\n  class=\"gh-409l-resistance\"\n  aria-label=\"Corrosion and oxidation resistance of SUS 409L\"\n>\n  <p class=\"resistance-intro\">\n    SUS 409L provides better corrosion and oxidation resistance than ordinary\n    carbon steel, but it is not intended to match the general corrosion\n    resistance of higher-chromium grades such as SUS 430, SUS 304, or SUS 316L.\n    Its principal advantage is its cost-effective performance in automotive\n    exhaust systems and other applications exposed to heat, combustion gases,\n    condensation, and repeated thermal cycling.\n  <\/p>\n\n  <div class=\"resistance-grid\">\n    <article class=\"resistance-card\">\n      <h3>General Corrosion Resistance<\/h3>\n\n      <p>\n        The chromium content of SUS 409L forms a passive surface layer that\n        provides moderate protection in mildly corrosive environments. Surface\n        discoloration or light staining may occur during outdoor service\n        without necessarily affecting the component\u2019s structural function.\n      <\/p>\n\n      <ul>\n        <li>Better atmospheric corrosion resistance than carbon steel<\/li>\n        <li>Suitable for many dry indoor and mildly corrosive environments<\/li>\n        <li>Useful where functional durability is more important than appearance<\/li>\n        <li>Not recommended for highly corrosive or chloride-rich service<\/li>\n      <\/ul>\n    <\/article>\n\n    <article class=\"resistance-card\">\n      <h3>Oxidation and Thermal-Cycling Resistance<\/h3>\n\n      <p>\n        SUS 409L is designed to withstand oxidation and repeated heating and\n        cooling in compatible exhaust applications. Its ferritic structure,\n        relatively low thermal expansion, and titanium stabilization support\n        performance under thermal cycling.\n      <\/p>\n\n      <ul>\n        <li>Suitable for automotive exhaust gases and elevated temperatures<\/li>\n        <li>Good resistance to repeated heating and cooling cycles<\/li>\n        <li>Lower thermal expansion than austenitic stainless steel grades<\/li>\n        <li>Commonly used for mufflers, exhaust pipes, and heat shields<\/li>\n      <\/ul>\n    <\/article>\n\n    <article class=\"resistance-card\">\n      <h3>Important Service Limitations<\/h3>\n\n      <p>\n        SUS 409L should not be selected solely because it is classified as\n        stainless steel. Its suitability depends on temperature, condensation,\n        chloride concentration, atmosphere, drainage, fabrication, and required\n        service life.\n      <\/p>\n\n      <ul>\n        <li>Marine and coastal environments<\/li>\n        <li>Continuous water or saltwater immersion<\/li>\n        <li>Acidic or strongly alkaline chemical processing<\/li>\n        <li>Food-contact applications requiring a maintainable appearance<\/li>\n        <li>Decorative applications where surface staining is unacceptable<\/li>\n      <\/ul>\n    <\/article>\n\n    <article class=\"resistance-card\">\n      <h3>Maintaining Material Performance<\/h3>\n\n      <p>\n        Proper fabrication and maintenance help preserve the corrosion and\n        oxidation performance of finished SUS 409L components.\n      <\/p>\n\n      <ul>\n        <li>Avoid contamination from carbon-steel tools and grinding particles<\/li>\n        <li>Use suitable welding procedures and control excessive heat input<\/li>\n        <li>Remove fabrication residues and weld contamination where required<\/li>\n        <li>Design components to reduce trapped moisture and stagnant condensate<\/li>\n        <li>Select a compatible surface condition for the service environment<\/li>\n      <\/ul>\n    <\/article>\n  <\/div>\n\n  <div class=\"resistance-note\">\n    <p>\n      <span class=\"highlight\">Selection note:<\/span>\n      Oxidation resistance does not automatically mean resistance to every\n      corrosive environment. Confirm the actual temperature, gas composition,\n      condensate chemistry, chloride exposure, loading, and required appearance\n      before specifying SUS 409L. The applicable engineering standard and\n      material test certificate should govern the final selection.\n    <\/p>\n  <\/div>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-64a8c2a e-flex e-con-boxed e-con e-parent\" data-id=\"64a8c2a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f74b744 elementor-widget elementor-widget-heading\" data-id=\"f74b744\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SUS 430 Stainless Steel Applications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-be14f99 e-flex e-con-boxed e-con e-parent\" data-id=\"be14f99\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3fba4a5 e-con-full e-flex e-con e-child\" data-id=\"3fba4a5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0efab20 elementor-widget elementor-widget-image\" data-id=\"0efab20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"1800\" src=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1.jpg\" class=\"attachment-full size-full wp-image-1312\" alt=\"sus 409l stainless steel applications collage 1000x1800\" srcset=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1.jpg 1000w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1-167x300.jpg 167w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1-569x1024.jpg 569w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1-768x1382.jpg 768w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/08\/sus-409l-stainless-steel-applications-collage-1000x1800-1-853x1536.jpg 853w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-24b0bf3 e-con-full e-flex e-con e-child\" data-id=\"24b0bf3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22045cd elementor-widget elementor-widget-text-editor\" data-id=\"22045cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"1e5ghbp\" data-start=\"9730\" data-end=\"9760\">Automotive Exhaust Systems<\/h3><p data-start=\"9762\" data-end=\"9902\">The primary applications include exhaust pipes, mufflers, resonators, catalytic-converter shells, manifolds, and related exhaust components.<\/p><h3 data-section-id=\"1rfb8jy\" data-start=\"9904\" data-end=\"9943\">Heat Shields and Thermal Components<\/h3><p data-start=\"9945\" data-end=\"10067\">Its oxidation resistance and relatively low thermal expansion make it suitable for automotive and industrial heat shields.<\/p><h3 data-section-id=\"oxrp3t\" data-start=\"10069\" data-end=\"10102\">Commercial and Heavy Vehicles<\/h3><p data-start=\"10104\" data-end=\"10194\">SUS 409L is used in truck, bus, agricultural vehicle, and heavy-equipment exhaust systems.<\/p><h3 data-section-id=\"15u481h\" data-start=\"10196\" data-end=\"10222\">Agricultural Equipment<\/h3><p data-start=\"10224\" data-end=\"10364\">Applications include exhaust components, guards, housings, brackets, and fabricated parts exposed to moderate heat and corrosive conditions.<\/p><h3 data-section-id=\"rweu1k\" data-start=\"10366\" data-end=\"10411\">Industrial Exhaust and Furnace Components<\/h3><p data-start=\"10413\" data-end=\"10555\">Selected uses include exhaust ducts, silencers, burner components, furnace parts, and enclosures exposed to compatible gases and temperatures.<\/p><h3 data-section-id=\"s6uco5\" data-start=\"10557\" data-end=\"10590\">General Fabricated Components<\/h3><p data-start=\"10592\" data-end=\"10747\">SUS 409L may be used for containers, brackets, structural covers, and equipment components where moderate corrosion resistance and low cost are acceptable.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4dc3a139 e-flex e-con-boxed e-con e-parent\" data-id=\"4dc3a139\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f86f7ac elementor-widget elementor-widget-text-editor\" data-id=\"3f86f7ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>faq<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-582feb4c elementor-widget elementor-widget-heading\" data-id=\"582feb4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Stainless Steel CSP Material FAQ<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-12b1c1ea e-con-full e-flex e-con e-child\" data-id=\"12b1c1ea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4f5fa873 e-con-full e-flex e-con e-child\" data-id=\"4f5fa873\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-700004c9 uael-faq-box-layout-yes align-at-left elementor-widget elementor-widget-uael-faq\" data-id=\"700004c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"uael-faq.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\t<div id='uael-faq-wrapper-187' class=\"uael-faq-wrapper\">\n\t\t\t\t<div class=\"uael-faq-container uael-faq-layout-accordion\" data-layout=\"accordion\" >\n\t\t\t\t\t\t\t\t\t\t\t\t<div id=\"uael-accordion-5ffd51d\" class=\"uael-faq-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t\t<div class= \"uael-accordion-title\" aria-expanded=\"false\" role=\"tab\">\n\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon uael-accordion-icon-left\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-angle-up\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M177 159.7l136 136c9.4 9.4 9.4 24.6 0 33.9l-22.6 22.6c-9.4 9.4-24.6 9.4-33.9 0L160 255.9l-96.4 96.4c-9.4 9.4-24.6 9.4-33.9 0L7 329.7c-9.4-9.4-9.4-24.6 0-33.9l136-136c9.4-9.5 24.6-9.5 34-.1z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"uael-question-5ffd51d uael-question-span\" tabindex=\"0\" id=\"uael-faq-1-6a9ba47d74430\">What is SUS 409L stainless steel?<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"uael-accordion-content\" role=\"tabpanel\">\n\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t\t<span><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"287\" data-end=\"504\">SUS 409L is a low-carbon, titanium-stabilized ferritic stainless steel used primarily for automotive exhaust systems and heat-cycling components.<\/p><\/span>\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div id=\"uael-accordion-3b58fa2\" class=\"uael-faq-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t\t<div class= \"uael-accordion-title\" aria-expanded=\"false\" role=\"tab\">\n\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon uael-accordion-icon-left\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-angle-up\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M177 159.7l136 136c9.4 9.4 9.4 24.6 0 33.9l-22.6 22.6c-9.4 9.4-24.6 9.4-33.9 0L160 255.9l-96.4 96.4c-9.4 9.4-24.6 9.4-33.9 0L7 329.7c-9.4-9.4-9.4-24.6 0-33.9l136-136c9.4-9.5 24.6-9.5 34-.1z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"uael-question-3b58fa2 uael-question-span\" tabindex=\"0\" id=\"uael-faq-2-6a9ba47d744a4\">Why is titanium added to SUS 409L?<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"uael-accordion-content\" role=\"tabpanel\">\n\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t\t<span><p>Titanium stabilizes carbon and nitrogen, helping reduce sensitization and improve welding and heat-affected-zone performance.<\/p><\/span>\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div id=\"uael-accordion-19637be\" class=\"uael-faq-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t\t<div class= \"uael-accordion-title\" aria-expanded=\"false\" role=\"tab\">\n\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon uael-accordion-icon-left\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-angle-up\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M177 159.7l136 136c9.4 9.4 9.4 24.6 0 33.9l-22.6 22.6c-9.4 9.4-24.6 9.4-33.9 0L160 255.9l-96.4 96.4c-9.4 9.4-24.6 9.4-33.9 0L7 329.7c-9.4-9.4-9.4-24.6 0-33.9l136-136c9.4-9.5 24.6-9.5 34-.1z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"uael-question-19637be uael-question-span\" tabindex=\"0\" id=\"uael-faq-3-6a9ba47d744e5\">Is SUS 409L suitable for automotive exhaust systems?<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"uael-accordion-content\" role=\"tabpanel\">\n\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t\t<span><p>Yes. Automotive exhaust pipes, mufflers, catalytic-converter components, and heat shields are its primary applications.<\/p><\/span>\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div id=\"uael-accordion-c7b01e4\" class=\"uael-faq-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t\t<div class= \"uael-accordion-title\" aria-expanded=\"false\" role=\"tab\">\n\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon uael-accordion-icon-left\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-angle-up\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M177 159.7l136 136c9.4 9.4 9.4 24.6 0 33.9l-22.6 22.6c-9.4 9.4-24.6 9.4-33.9 0L160 255.9l-96.4 96.4c-9.4 9.4-24.6 9.4-33.9 0L7 329.7c-9.4-9.4-9.4-24.6 0-33.9l136-136c9.4-9.5 24.6-9.5 34-.1z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"uael-question-c7b01e4 uael-question-span\" tabindex=\"0\" id=\"uael-faq-4-6a9ba47d7451f\">Is SUS 409L suitable for chemical equipment?<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"uael-accordion-content\" role=\"tabpanel\">\n\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t\t<span><p>Generally, it is not the preferred grade for aggressive chemical-processing environments. The actual chemicals, concentrations, temperatures, and exposure conditions must be evaluated.<\/p><\/span>\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div id=\"uael-accordion-3aad950\" class=\"uael-faq-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t\t<div class= \"uael-accordion-title\" aria-expanded=\"false\" role=\"tab\">\n\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon uael-accordion-icon-left\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-angle-right\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"uael-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-angle-up\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M177 159.7l136 136c9.4 9.4 9.4 24.6 0 33.9l-22.6 22.6c-9.4 9.4-24.6 9.4-33.9 0L160 255.9l-96.4 96.4c-9.4 9.4-24.6 9.4-33.9 0L7 329.7c-9.4-9.4-9.4-24.6 0-33.9l136-136c9.4-9.5 24.6-9.5 34-.1z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"uael-question-3aad950 uael-question-span\" tabindex=\"0\" id=\"uael-faq-5-6a9ba47d74559\">What is the difference between SUS 409L and SUS 439?<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"uael-accordion-content\" role=\"tabpanel\">\n\t\t\t\t\t\t\t\t\t<span>\n\t\t\t\t\t\t\t\t\t<span><p>SUS 439 contains more chromium and generally provides better corrosion resistance and elevated-temperature performance, but it usually costs more.<\/p><\/span>\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1dffeb0 e-flex e-con-boxed e-con e-parent\" data-id=\"1dffeb0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6959d5e e-con-full e-flex e-con e-child\" data-id=\"6959d5e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-309f708 elementor-widget elementor-widget-image\" data-id=\"309f708\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/07\/HL-Hairline.jpg\" class=\"attachment-large size-large wp-image-1016\" alt=\"hl hairline\" srcset=\"https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/07\/HL-Hairline.jpg 1000w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/07\/HL-Hairline-300x300.jpg 300w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/07\/HL-Hairline-150x150.jpg 150w, https:\/\/ghinox.opuspixelum.net\/wp-content\/uploads\/2026\/07\/HL-Hairline-768x768.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-16de1e9 e-con-full e-flex e-con e-child\" data-id=\"16de1e9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a283d10 elementor-widget elementor-widget-text-editor\" data-id=\"a283d10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Take Action<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c487f0e elementor-widget elementor-widget-hfe-infocard\" data-id=\"c487f0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"hfe-infocard.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<div class=\"hfe-infocard\">\n\t\t\t\t\t\t\t\t\t<div class=\"hfe-infocard-title-wrap\">\n\t\t\t\t<h2 class=\"hfe-infocard-title elementor-inline-editing\" data-elementor-setting-key=\"infocard_title\" data-elementor-inline-editing-toolbar=\"basic\" >Looking for SUS 409L Stainless Steel Coil, Sheet, Strip, or Plate?<\/h2>\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"hfe-infocard-text-wrap\">\n\t\t\t\t<div class=\"hfe-infocard-text elementor-inline-editing\" data-elementor-setting-key=\"infocard_description\" data-elementor-inline-editing-toolbar=\"advanced\">\n\t\t\t\t\tGenn-Hann supplies stainless steel materials for precision processing, industrial fabrication, architectural components, appliances, electronics, automotive parts, and other demanding applications.\n\nTell us your required grade, thickness, width, surface finish, hardness, quantity, and end-use application. Our team can help review material availability and processing requirements.\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"hfe-button-wrapper elementor-widget-button\">\n\t\t\t\t<a href=\"https:\/\/ghinox.opuspixelum.net\/zh-hant\/%e8%81%af%e7%b5%a1\/\" class=\"elementor-button-link elementor-button elementor-size-sm\">\n\t\t\t\t\t<span class=\"elementor-button-text elementor-inline-editing\"  data-elementor-setting-key=\"infocard_button_text\" data-elementor-inline-editing-toolbar=\"none\">Get Started<\/span>\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>STAINLESS STEEL GRAD [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-10329","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/pages\/10329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/comments?post=10329"}],"version-history":[{"count":2,"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/pages\/10329\/revisions"}],"predecessor-version":[{"id":10375,"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/pages\/10329\/revisions\/10375"}],"wp:attachment":[{"href":"https:\/\/ghinox.opuspixelum.net\/zh-hant\/wp-json\/wp\/v2\/media?parent=10329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}