{"id":7353,"date":"2026-06-01T15:39:36","date_gmt":"2026-06-01T07:39:36","guid":{"rendered":"https:\/\/www.cjmsteelgroup.com\/?p=7353"},"modified":"2026-06-01T15:39:44","modified_gmt":"2026-06-01T07:39:44","slug":"s355jr-s355j2-s355nl-steel-difference","status":"publish","type":"post","link":"https:\/\/www.cjmsteelgroup.com\/es\/s355jr-s355j2-s355nl-steel-difference.html","title":{"rendered":"S355JR vs S355J2 vs S355NL: Key Differences, Impact Test &amp; Equivalent Materials"},"content":{"rendered":"<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-b1cbabd52d5365cc33088a741861d196\"><strong>S355JR vs S355J2 vs S355NL \u2013 Key Differences Explained<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-0dfde5a1945b2d68c2cff00913c397f9\">S355JR, S355J2, and S355NL differ mainly in <strong>impact test temperature and low-temperature performance<\/strong>, which directly determine where each grade can be safely used.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-16ff734422eb0dbb911fdc3811cb9a0b\">For most engineering and procurement decisions, the key question is simple:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-116466a9f11e9897da15ac864ad2d29a\"><strong>S355JR \u2192 suitable for +20\u00b0C environments<\/strong><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-459c425b83f8745d3c1af2b109e20b24\"><strong>S355J2 \u2192 suitable for \u201320\u00b0C conditions<\/strong><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-919ca065c3f5c126026ddef1dbb76941\"><strong>S355NL \u2192 suitable for \u201350\u00b0C and critical low-temperature applications<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-a6f12f6c2b98121539b2bedd643ae043\">Choosing the wrong grade can lead to brittle fracture risks in cold environments, so understanding these differences is essential for structural safety and compliance.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-c222e1fe4dd76c8f28eb72b35b6617bc\"><strong>Quick Comparison: S355JR vs S355J2 vs S355NL<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Grado<\/strong><\/td><td><strong>L\u00edmite el\u00e1stico (MPa)<\/strong><\/td><td><strong>Prueba de impacto<\/strong><\/td><td><strong>Temperatura<\/strong><\/td><td><strong>Condici\u00f3n<\/strong><\/td><td><strong>Uso t\u00edpico<\/strong><\/td><\/tr><tr><td><strong>S355JR<\/strong><\/td><td>\u2265355<\/td><td>27J<\/td><td>+20\u00b0C<\/td><td>Como rodado<\/td><td>Estructuras est\u00e1ndar<\/td><\/tr><tr><td><strong>S355J2<\/strong><\/td><td>\u2265355<\/td><td>27J<\/td><td>-20\u00b0C<\/td><td>Como rodado<\/td><td>Puentes, regiones fr\u00edas<\/td><\/tr><tr><td><strong>S355NL<\/strong><\/td><td>\u2265355<\/td><td>27J<\/td><td>-50\u00b0C<\/td><td>Normalizado \/ Normalizado Laminado<\/td><td>Offshore, equipos de baja temperatura<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-feb83cca98cf6dd1d39902f4e4684b20\"><em><strong>For a broader comparison of EN structural steels, see our guide: <a href=\"https:\/\/www.cjmsteelgroup.com\/es\/s235-s275-s355-structural-steel-comparison-and-properties.html\/\" target=\"_blank\" rel=\"noopener\" title=\"Comparaci\u00f3n y propiedades del acero estructural S235 \/ S275 \/ S355\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Comparaci\u00f3n y propiedades del acero estructural S235 \/ S275 \/ S355<\/mark><\/a><\/strong><\/em>.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-2a94942a4bf84e5f79e5bcc5dd30479d\"><strong>S355JR vs S355J2 vs S355NL Equivalent Materials (ASTM \/ JIS \/ GB)<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-c9a227fe7fba8c1c443b86590de390e9\">For global sourcing, <strong>equivalent material comparison<\/strong> is a key concern.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Grado EN<\/strong><\/td><td><strong>Equivalente ASTM<\/strong><\/td><td><strong>JIS<\/strong><\/td><td><strong>GB<\/strong><\/td><\/tr><tr><td><strong>S355JR<\/strong><\/td><td>ASTM A572 Gr 50<\/td><td>SM490A<\/td><td>Q345B<\/td><\/tr><tr><td><strong>S355J2<\/strong><\/td><td>ASTM A572 Gr 50 \/ A992<\/td><td>SM490B<\/td><td>Q345D<\/td><\/tr><tr><td><strong>S355NL<\/strong><\/td><td>ASTM A516 Gr 70 (approx., toughness differs)<\/td><td>SM490C<\/td><td>Q345E<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-de68dc5e38329f4d0ca412965faf6236\">\u26a0\ufe0f <strong>Important:<\/strong><br>Se trata de <strong>reference equivalents<\/strong>, not exact substitutions.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-27f2fc896ffe7697b92dd5e0dce6f94a\">ASTM A516 Gr 70 differs in pressure vessel application<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-3535eb9995906b043e738af41c1027d9\">Toughness requirements must always be verified<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-eb052c6f7c7614f62aec2be44af30b6c\">Welding and thickness may affect substitution decisions<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-7f748df3a8cbc438a7a2735b44f868f7\">\ud83d\udc49 In procurement, always confirm:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-11505c1bd99e7279c7a79939bcc26461\">project standards<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-7fa75be98edfb87f1919a6695c8ef593\">impact test requirements<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-c06f62de2412e09f7a02e52fc4ab281c\">delivery condition (+N \/ normalized)<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-a2825b4e70c2efd27c8e435f21dd50dc\"><strong>Impact Test Temperature: The Core Difference<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-04d7dc50f0e5a6b04738a48634fc1578\">Al comparar <strong>S355JR vs S355J2 vs S355NL<\/strong>, the most critical factor is Charpy V-notch impact testing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-8e66a48660c8d3f18b6be9dd8a5f2692\"><strong>S355JR:<\/strong> tested at <strong>+20\u00b0C<\/strong> \u2192 no guarantee in cold climates<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-009eea174c91fb560a003b9ebb5835e8\"><strong>S355J2:<\/strong> tested at <strong>-20\u00b0C<\/strong> \u2192 suitable for outdoor and winter conditions<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-aab30982c06b15be1f67efec58715fed\"><strong>S355NL:<\/strong> tested at <strong>-50\u00b0C<\/strong> \u2192 designed for extreme environments<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-9ca13ad016dafcbae182312284010ec1\">This is why:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-914a438318b985ae9a7262bbe5f1a3b2\">S355NL is required for <strong>offshore, wind towers, and low-temperature equipment<\/strong><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-032f5f5c636bc239269dc21f4fda6637\">S355JR <strong>cannot replace S355J2<\/strong> in cold regions<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-37cb6d4bd8cfdf95fe9656b8d601dc52\">S355J2 is the <strong>standard choice for bridges in Europe<\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-a93a6eeb4290ab92c762f4b30c9de4ca\"><strong>S355J2 vs S355NL: What\u2019s the Real Difference?<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-f28ae907e4ec89a7a0353bab55238e67\">Many buyers compare <strong>S355J2 vs S355NL<\/strong> for low-temperature projects.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-15fbdadd4bd620cb47ee8200f699aae7\">Key differences:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b95b38dcfe259cf266e6c825dc94a863\">S355J2 \u2192 \u201320\u00b0C toughness<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-27c877e1070018bf1793a8468985c22c\">S355NL \u2192 \u201350\u00b0C toughness<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-842f7d39a237608776f9667973ca0e76\">S355NL \u2192 delivered in <strong>normalized condition (+N)<\/strong><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-c8c49ebf58201b063d88826198512037\">S355NL \u2192 better performance in thick plates and critical welding structures<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b66d89a8f114b4f37d13f074447e01f8\"><strong>Conclusion:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-0cb6e51635c1ceb3d2f619d3cf610826\">Utilice <strong>S355J2<\/strong> for general cold regions<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-73767fc7872c74ecb5ce1e7ad56fcd32\">Utilice <strong>S355NL<\/strong> for offshore, wind power, or extreme climates<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-106c34f8e78d3a9b25551b5e958a5a2b\"><strong>S355JR vs S355J2: Can You Substitute?<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-ada7d3748928475dee290f4d0d7a7038\">This is one of the most common procurement questions.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-19369b08f1af1a202c555a0dcfa9c372\"><strong>Short answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-3ed74e000ff1629b1eb51795b0ddaba2\">\u2714\ufe0f Possible in warm environments<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9df594522b1a79fdf268a6df308683c0\">\u274c Not recommended in cold conditions<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-10c4854f5793c5ce56ebd3f9614042a3\"><strong>\u00bfPor qu\u00e9?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b58860892acf0837c93d8fc418af8028\">S355JR has no low-temperature guarantee<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-9f6b89d1c5d5344abf5ec2cf5d82b5dd\">S355J2 ensures toughness at \u201320\u00b0C<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-ded1cfcdd77d2e7257f98b7cf2ec71ca\">\ud83d\udc49 <strong>Rule of thumb:<\/strong><br>If your structure is exposed to outdoor winter conditions,<br><strong>S355J2 is the safer and widely accepted choice.<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-b4bc0127383b515d5c59b31dfcd5efa9\"><strong>How to Choose Between S355JR vs S355J2 vs S355NL<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-ab52381b9e1cc4a070257517f086af67\">Selection should always be based on <strong>service temperature and safety requirements<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S355JR \u2192 Standard climate, cost-effective<\/strong><br>For warm\/Mediterranean regions or indoor structures.<\/li>\n\n\n\n<li><strong>S355J2 \u2192 Cold regions, bridges, better toughness<\/strong><br>Safe at \u201320\u00b0C; widely used in EU bridge fabrication.<\/li>\n\n\n\n<li><strong>S355NL \u2192 Offshore, wind power, cryogenic conditions<\/strong><br>Normalized delivery ensures reliable toughness at \u201350\u00b0C.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-8da9df7103f7ea681371974a69c1f662\">In international projects, S355J2 is the most commonly specified grade, while S355NL is used when safety margins are critical.<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"257\" src=\"https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures.jpg\" alt=\"Application of S355NL steel in offshore wind towers and low-temperature structures\" class=\"wp-image-7844\" srcset=\"https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures.jpg 500w, https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures-300x154.jpg 300w, https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures-18x9.jpg 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption class=\"wp-element-caption\">Placa de acero S355NL utilizada en torres e\u00f3licas marinas<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-8a39486f4dd1c0f585ff737fd7f7c30b\"><strong>Aplicaciones del acero S355JR \/ S355J2 \/ S355NL en proyectos de construcci\u00f3n y offshore<\/strong><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-7d0e1c02a26e2fedd9edcd2c0097ad0d\">Estas calidades se suministran en <strong>chapa, bobina, barra redonda y tubo<\/strong> utilizados en m\u00faltiples sectores:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b6aae5ff4b92f863327a7c37ba46464f\"><strong>S355JR \u2013 general construction, machinery<\/strong><br>For buyers looking for materials in this grade, explore <strong><a href=\"https:\/\/www.cjmsteelgroup.com\/es\/s355jr-carbon-steel-plate.html\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">S355JR Carbon Steel Plate<\/mark><\/a><\/strong>, <strong><a href=\"https:\/\/www.cjmsteelgroup.com\/es\/a572-carbon-steel-coil.html\/\" target=\"_blank\" rel=\"noopener\" title=\"S355JR Carbon Steel Coil\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">S355JR Carbon Steel Coil<\/mark><\/a><\/strong> y <a href=\"https:\/\/www.cjmsteelgroup.com\/es\/a572-s355jr-round-steel-bar.html\/\" target=\"_blank\" rel=\"noopener\" title=\"Barra redonda A572\/S355JR\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">S355JR Round Steel Bar<\/mark><\/strong><\/a>.<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-72f584e0615f62fb1c8e435b5580b5b5\"><strong><strong>S355J2 \/ S355NL<\/strong> \u2013 Bridges &amp; Cold-Region Projects<\/strong><br>If your project requires plates for bridge, wind tower, or heavy-duty structural fabrication, you can review the <strong><a href=\"https:\/\/www.cjmsteelgroup.com\/es\/s355j2-s355jr-wind-tower-steel-plate.html\/\" target=\"_blank\" rel=\"noopener\" title=\"Placa de torre e\u00f3lica\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Placa de torre e\u00f3lica<\/mark><\/strong><\/a><\/strong> section for available S355J2\/S355NL options.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-black-color has-text-color has-link-color has-medium-font-size wp-elements-377897eaa6d8d9a52e40dddd6e9184c1\"><strong>FAQs: S355JR vs S355J2 vs S355NL (For Buyers &amp; Engineers)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-8db540e2bc697edc492a9c3e6d94949d\"><strong>1. What is the main difference between S355JR and S355J2?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-169ad93b7f7b49d6820574c305afad0d\">The difference is impact test temperature: S355JR is tested at +20\u00b0C, while S355J2 is tested at \u201320\u00b0C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. What is the S355JR equivalent to ASTM?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-2d8a5eae09588ce48ce446ab9451e298\">The most common ASTM equivalent for S355JR is <strong>ASTM A572 Grado 50<\/strong>, widely used for general structural applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-e364e924ea0128403bd60fb4b955a7de\"><strong>3. What is the S355J2 equivalent to ASTM?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-dab23dfc0c2a140c42f5924d5330d87c\">S355J2 is commonly compared with <strong>ASTM A572 Grado 50<\/strong> o <strong>ASTM A992<\/strong> in structural applications. However, exact substitution should be verified based on impact toughness and chemical composition.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-0df0e486d18f7b0ac930f5f8e51b1a56\"><strong>4. What is the S355NL equivalent material?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-1ff1a46bcb642689aed1546f02385832\">S355NL is often referenced against <strong>ASTM A516 Grado 70<\/strong> o <strong>A572 Grado 50<\/strong> for low-temperature plate applications, though its fine-grain and normalized condition set it apart.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-4e67f8382a856a25ec936d98880040f1\"><strong>5. Can S355JR replace S355J2?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-1607484d62e12a8309a5bbeb23ff9d24\">S355JR can replace S355J2 only in projects that do not require low-temperature impact toughness. For outdoor structures in cold climates or components exposed to winter temperatures, S355J2 remains the safer choice.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-4e62e135020bd8c156708fd8d1442c3e\"><strong>6. S355JR vs S355NL: What\u2019s the difference?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-e2f1b9eaf03ff582fbd9e2e627b6732a\">S355NL offers superior low-temperature toughness (-50\u00b0C) and is delivered in a normalized condition, making it suitable for offshore, pressure equipment, and heavily welded structures. S355JR is intended for standard structural applications without low-temperature requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-0dcb307365e1f86904656c42d20a45ba\"><strong>7. Is S355J2 better than S355JR?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-2b004fe18a94db3c06de91274c03e744\">Neither grade is universally \u201cbetter.\u201d S355J2 is preferable for colder climates due to its \u201320\u00b0C impact toughness, while S355JR is a cost-efficient choice for general construction in moderate environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-c6b04b9fb6473dd50def044455bacad0\"><strong>8. S355J2 vs S355NL: Which one should I choose?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-260288f85b88f5b8af894efbabcb8f9e\">S355J2 is suitable for general heavy structures requiring \u201320\u00b0C impact toughness, while S355NL is preferred for offshore, wind energy, or low-temperature pressure equipment due to its \u201350\u00b0C toughness and normalized delivery.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-394a6bd19cb804c42d16f18e83fc91e5\">9. <strong>Is S355JR equivalent to A572 Grade 50?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-c495860868dda1811453a099b0e3c064\">Yes. For many structural applications, S355JR is considered comparable to ASTM A572 Grade 50 due to similar strength and composition.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-8d63f1dc9749d22069232e75509d2d48\"><strong>10. What does S355J2+N mean?<\/strong><\/h3>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-bf370841babfe2204d46bb1744f875da\"><strong>S355J2+N indicates S355J2 steel delivered in a normalized condition (+N).<\/strong><br>Normalizing improves grain structure, toughness, and weldability compared with standard as-rolled S355J2.<\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b25d3df7fe602a03c76070683e14e4bd\">In international procurement, <strong>S355J2+N equivalent material<\/strong> is often compared with ASTM A572 Grade 50 or ASTM A516 Grade 70 depending on toughness requirements.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-b2fd5629e292c0c03128fcf738697f21\"><em><strong>Still unsure which S355 grade best suits your project?<\/strong><\/em><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-9909541bc12486013e0d8358a3362997\"><em><strong>Acero CJM<\/strong> suministra placas y bobinas S355JR, S355J2 y S355NL a compradores de todo el mundo.<br><strong><a href=\"https:\/\/www.cjmsteelgroup.com\/es\/contact-us.html\/\" target=\"_blank\" rel=\"noopener\" title=\"P\u00f3ngase en contacto con nosotros\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Contacte con nuestro equipo de ingenieros<\/mark><\/a><\/strong> para la selecci\u00f3n personalizada de materiales y el apoyo al suministro.<\/em><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>S355JR vs S355J2 vs S355NL \u2013 Key Differences Explained S355JR, S355J2, and S355NL differ mainly in impact test temperature and low-temperature performance, which directly determine where each grade can be safely used. For most engineering and procurement decisions, the key question is simple: Choosing the wrong grade can lead to brittle fracture risks in cold [&hellip;]<\/p>","protected":false},"author":1,"featured_media":7844,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-7353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"metadata":{"_edit_lock":["1780300666:1"],"_edit_last":["1"],"_aioseo_title":["S355JR vs S355J2 vs S355NL Equivalent &amp; What\u2019s the Difference"],"_aioseo_description":["Compare S355JR, S355J2 and S355NL steel: impact test temperatures, strength differences and equivalent grades. 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Practical guide for engineers and buyers.","questions":[{"question":"S355JR vs S355J2: What\u2019s the difference?","answer":"S355J2 provides guaranteed impact toughness at \u201320\u00b0C, while S355JR is tested at +20\u00b0C. This makes S355J2 more suitable for colder environments or structures exposed to winter conditions. In mechanical strength and chemical composition, the two grades are largely similar."},{"question":"What is the S355JR equivalent to ASTM?","answer":"The most common ASTM equivalent for S355JR is ASTM A572 Grade 50, widely used for general structural applications."},{"question":"What is the S355J2 equivalent to ASTM?","answer":"S355J2 is commonly compared with ASTM A572 Grade 50 or ASTM A992 in structural applications. However, exact substitution should be verified based on impact toughness and chemical composition."},{"question":"What is the S355NL equivalent material?","answer":"S355NL is often referenced against ASTM A516 Grade 70 or A572 Grade 50 for low-temperature plate applications, though its fine-grain and normalized condition set it apart."},{"question":"Can S355JR replace S355J2?","answer":"S355JR can replace S355J2 only in projects that do not require low-temperature impact toughness. For outdoor structures in cold climates or components exposed to winter temperatures, S355J2 remains the safer choice."},{"question":"S355JR vs S355NL: What\u2019s the difference?","answer":"S355NL offers superior low-temperature toughness (-50\u00b0C) and is delivered in a normalized condition, making it suitable for offshore, pressure equipment, and heavily welded structures. S355JR is intended for standard structural applications without low-temperature requirements."},{"question":"What does the \u201cN\u201d mean in S355NL?","answer":"The \u201cN\u201d stands for normalized rolling, meaning the steel has been heat-treated to refine grain structure, improving toughness and weldability. This makes S355NL suitable for offshore platforms, pressure vessels, and low-temperature storage tanks."},{"question":"What does S355J2+N mean?","answer":"S355J2+N indicates S355J2 steel delivered in a normalized condition (+N).\nNormalizing improves grain structure, toughness, and weldability compared with standard as-rolled S355J2."}]}}]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"limit_modified_date":false,"created":"2025-09-25 02:28:24","updated":"2026-06-01 07:46:53"},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.cjmsteelgroup.com\/es\" title=\"Home\">Home<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t<a href=\"https:\/\/www.cjmsteelgroup.com\/es\/news\/\" title=\"News\">News<\/a>\n<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\tS355JR vs S355J2 vs S355NL: Key Differences, Impact Test &amp; Equivalent Materials\n<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.cjmsteelgroup.com\/es"},{"label":"News","link":"https:\/\/www.cjmsteelgroup.com\/es\/news\/"},{"label":"S355JR vs S355J2 vs S355NL: Key Differences, Impact Test &amp; Equivalent Materials","link":"https:\/\/www.cjmsteelgroup.com\/es\/s355jr-s355j2-s355nl-steel-difference.html"}],"medium_url":"https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures-300x154.jpg","thumbnail_url":"https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures-150x150.jpg","full_url":"https:\/\/www.cjmsteelgroup.com\/wp-content\/uploads\/2025\/10\/offshore-wind-towers-and-low-temperature-structures.jpg","_links":{"self":[{"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/7353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/comments?post=7353"}],"version-history":[{"count":10,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/7353\/revisions"}],"predecessor-version":[{"id":8336,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/posts\/7353\/revisions\/8336"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/media\/7844"}],"wp:attachment":[{"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/media?parent=7353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/categories?post=7353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cjmsteelgroup.com\/es\/wp-json\/wp\/v2\/tags?post=7353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}