{"id":180563,"date":"2026-10-01T14:50:13","date_gmt":"2026-10-01T12:50:13","guid":{"rendered":"https:\/\/stalesia.com\/grades\/"},"modified":"2026-10-01T14:50:13","modified_gmt":"2026-10-01T12:50:13","slug":"grades","status":"publish","type":"page","link":"https:\/\/stalesia.com\/en\/grades\/","title":{"rendered":"Steel grades"},"content":{"rendered":"<p class=\"stalesia-lede wp-block-paragraph\">Every grade has its own page: chemical composition, mechanical properties, equivalent designations and the full list of products available from stock. Start with a material family or pick a designation directly.<\/p><section class=\"stalesia-typecards\"><h2 class=\"stalesia-typecards__title\">Steel families<\/h2><p class=\"stalesia-typecards__intro\">Stock products and grade articles, grouped by type of material.<\/p><ul class=\"stalesia-cats\"><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/acid-resistant\/\"><span class=\"stalesia-cat__name\">Acid-resistant<\/span><span class=\"stalesia-cat__note\">Austenitic with molybdenum \u2013 resistant to pitting and crevice corrosion; for chemicals, processing and chloride environments.<\/span><span class=\"stalesia-cat__count\">1,506 items \u00b7 21 articles<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/austenitic-stainless\/\"><span class=\"stalesia-cat__name\">Austenitic stainless<\/span><span class=\"stalesia-cat__note\">Chromium-nickel without molybdenum \u2013 the standard choice for structures, food service and interiors.<\/span><span class=\"stalesia-cat__count\">1,788 items \u00b7 14 articles<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/heat-resistant\/\"><span class=\"stalesia-cat__name\">Heat-resistant<\/span><span class=\"stalesia-cat__note\">Higher chromium and silicon \u2013 retain strength and scaling resistance at high temperatures.<\/span><span class=\"stalesia-cat__count\">487 items \u00b7 21 articles<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/ferritic\/\"><span class=\"stalesia-cat__name\">Ferritic<\/span><span class=\"stalesia-cat__note\">Chromium without nickel \u2013 cheaper, magnetic, good where atmospheric corrosion resistance matters.<\/span><span class=\"stalesia-cat__count\">96 items \u00b7 9 articles<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/martensitic\/\"><span class=\"stalesia-cat__name\">Martensitic<\/span><span class=\"stalesia-cat__note\">Hardenable, high hardness \u2013 for blades, shafts and wear parts.<\/span><span class=\"stalesia-cat__count\">56 items \u00b7 17 articles<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/duplex\/\"><span class=\"stalesia-cat__name\">Duplex<\/span><span class=\"stalesia-cat__note\">Austenitic-ferritic structure \u2013 twice the yield strength with good stress corrosion resistance.<\/span><span class=\"stalesia-cat__count\">99 items<\/span><\/a><\/li><li class=\"stalesia-cat\"><a class=\"stalesia-cat__link\" href=\"https:\/\/stalesia.com\/en\/grades\/type\/precipitation-hardening\/\"><span class=\"stalesia-cat__name\">Precipitation-hardening<\/span><span class=\"stalesia-cat__note\">Age-hardened \u2013 high strength while keeping corrosion resistance.<\/span><span class=\"stalesia-cat__count\">6 articles<\/span><\/a><\/li><\/ul><\/section><h2 class=\"wp-block-heading stalesia-section-title has-xxl-font-size\">Most often chosen grades<\/h2>\t<div class=\"stalesia-gradecards\">\n\t\t<ul class=\"stalesia-gradecards__list\">\n\t\t\t\t\t\t\t<li class=\"stalesia-gradecard\">\n\t\t\t\t\t<a href=\"https:\/\/stalesia.com\/en\/grades\/1-4307\/\">\n\t\t\t\t\t\t<span class=\"stalesia-gradecard__name\">1.4307<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__desc\">Chromium-nickel without molybdenum \u2013 the standard choice for structures, food service and interiors.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__count\">1,024 items \u2192<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t\t\t\t<li class=\"stalesia-gradecard\">\n\t\t\t\t\t<a href=\"https:\/\/stalesia.com\/en\/grades\/1-4404\/\">\n\t\t\t\t\t\t<span class=\"stalesia-gradecard__name\">1.4404<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__desc\">Austenitic with molybdenum \u2013 resistant to pitting and crevice corrosion; for chemicals, processing and chloride environments.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__count\">955 items \u2192<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t\t\t\t<li class=\"stalesia-gradecard\">\n\t\t\t\t\t<a href=\"https:\/\/stalesia.com\/en\/grades\/1-4301\/\">\n\t\t\t\t\t\t<span class=\"stalesia-gradecard__name\">1.4301<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__desc\">Chromium-nickel without molybdenum \u2013 the standard choice for structures, food service and interiors.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"stalesia-gradecard__count\">942 items \u2192<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\n\t\t\t\t\t<ul class=\"stalesia-grades__list\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/304\/\"><span class=\"stalesia-chip__name\">304<\/span> <span class=\"stalesia-chip__num\">859<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/304l\/\"><span class=\"stalesia-chip__name\">304L<\/span> <span class=\"stalesia-chip__num\">859<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/316l\/\"><span class=\"stalesia-chip__name\">316L<\/span> <span class=\"stalesia-chip__num\">816<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/316\/\"><span class=\"stalesia-chip__name\">316<\/span> <span class=\"stalesia-chip__num\">749<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/1-4401\/\"><span class=\"stalesia-chip__name\">1.4401<\/span> <span class=\"stalesia-chip__num\">734<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/1-4541\/\"><span class=\"stalesia-chip__name\">1.4541<\/span> <span class=\"stalesia-chip__num\">575<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/321\/\"><span class=\"stalesia-chip__name\">321<\/span> <span class=\"stalesia-chip__num\">504<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/1-4571\/\"><span class=\"stalesia-chip__name\">1.4571<\/span> <span class=\"stalesia-chip__num\">485<\/span><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a class=\"stalesia-chip stalesia-chip--link\" href=\"https:\/\/stalesia.com\/en\/grades\/316ti\/\"><span class=\"stalesia-chip__name\">316Ti<\/span> <span class=\"stalesia-chip__num\">428<\/span><\/a><\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t","protected":false},"excerpt":{"rendered":"<p>Every grade has its own page: chemical composition, mechanical properties, equivalent designations and the full list of products available from stock. Start with a material family or pick a designation directly. Most often chosen grades<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-180563","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Steel grades - Stalesia<\/title>\n<meta name=\"description\" content=\"Stainless, acid-resistant and heat-resistant steel grades: chemical composition, properties, equivalent designations and products in stock at Stalesia.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stalesia.com\/en\/grades\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Steel grades - Stalesia\" \/>\n<meta property=\"og:description\" content=\"Stainless, acid-resistant and heat-resistant steel grades: chemical composition, properties, equivalent designations and products in stock at Stalesia.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/stalesia.com\/en\/grades\/\" \/>\n<meta property=\"og:site_name\" content=\"Stalesia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/StalesiaStal\/\" \/>\n<meta property=\"og:image\" content=\"https:\/\/stalesia.com\/wp-content\/uploads\/2026\/02\/prety-tuleje-banner-1024x585.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"585\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/grades\\\/\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/grades\\\/\",\"name\":\"Steel grades - Stalesia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#website\"},\"datePublished\":\"2026-10-01T12:50:13+00:00\",\"description\":\"Stainless, acid-resistant and heat-resistant steel grades: chemical composition, properties, equivalent designations and products in stock at Stalesia.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/grades\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/stalesia.com\\\/en\\\/grades\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/grades\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Steel grades\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\",\"name\":\"Stalesia\",\"description\":\"Online shop for stainless steel\",\"publisher\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/stalesia.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#organization\",\"name\":\"Stalesia\",\"url\":\"https:\\\/\\\/stalesia.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/logo-stalesia.png\",\"contentUrl\":\"https:\\\/\\\/stalesia.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/logo-stalesia.png\",\"width\":2444,\"height\":889,\"caption\":\"Stalesia\"},\"image\":{\"@id\":\"https:\\\/\\\/stalesia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/StalesiaStal\\\/\"],\"legalName\":\"Stalesia Sp\u00f3\u0142ka z Ograniczon\u0105 Odpowiedzialno\u015bci\u0105\",\"vatID\":\"PL6792899343\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"ul. 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