{"id":2214,"date":"2026-03-27T07:30:15","date_gmt":"2026-03-27T07:30:15","guid":{"rendered":"https:\/\/www.viteriafusani.it\/?p=2214"},"modified":"2026-03-20T15:50:28","modified_gmt":"2026-03-20T15:50:28","slug":"stainless-steel-screws-a2-a4-f","status":"publish","type":"post","link":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/","title":{"rendered":"Stainless Steel Screws A2, A4 and F (AISI 304 vs 316 vs 430): Which One to Choose Against Corrosion?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;]If you are looking for a stainless steel screw that offers good corrosion resistance, it is better to choose knowing the A2, A4 and F\/430 classes.<\/p>\n<p>For standard applications and in the presence of normal humidity, class <strong>A2<\/strong> is sufficient.<\/p>\n<p>For aggressive, marine, or chemical environments, <strong>A4<\/strong> is the safest choice.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#Classification_of_Screws_According_to_ISO_3506\" >Classification of Screws According to ISO 3506<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#Main_Differences_Between_A2_A4_and_430_Stainless_Steel\" >Main Differences Between A2, A4 and 430 Stainless Steel<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#A2_AISI_304_EN_14301\" >A2 (AISI 304 \/ EN 1.4301)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#A4_AISI_316_EN_14401-14404\" >A4 (AISI 316 \/ EN 1.4401-1.4404)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#F_430_AISI_430_EN_14016\" >F \/ 430 (AISI 430 \/ EN 1.4016)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#Strength_Class\" >Strength Class<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#Comparison_Table_of_Stainless_Steel_Screw_Classes\" >Comparison Table of Stainless Steel Screw Classes<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2><span class=\"ez-toc-section\" id=\"Classification_of_Screws_According_to_ISO_3506\"><\/span>Classification of Screws According to ISO 3506<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The mechanical and chemical requirements for stainless steel fasteners are defined by the <a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/67012\/d5706b9c36854f1d8f8bf1f29f28f1c2\/ISO-3506-6-2020.pdf\" target=\"_blank\" rel=\"noopener\"><strong>ISO 3506<\/strong> standard<\/a>. This introduces a <strong>classification system with abbreviations<\/strong> based on:<\/p>\n<ul>\n<li>Steel family (metallurgical structure and presence of molybdenum)<\/li>\n<li>Mechanical strength class.<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<td><strong>ISO Code<\/strong><\/td>\n<td><strong>Stainless Steel Type<\/strong><\/td>\n<td><strong>AISI\/EN Correlation<\/strong><\/td>\n<td><strong>Notes<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>A2<\/strong><\/td>\n<td>Austenitic without molybdenum<\/td>\n<td>304 \/ 1.4301<\/td>\n<td>Standard, good general corrosion resistance<\/td>\n<\/tr>\n<tr>\n<td><strong>A4<\/strong><\/td>\n<td>Austenitic with molybdenum<\/td>\n<td>316 \/ 1.4401-1.4404<\/td>\n<td>Excellent resistance to chlorides and corrosive environments<\/td>\n<\/tr>\n<tr>\n<td><strong>F<\/strong><\/td>\n<td>Ferritic<\/td>\n<td>430 \/ 1.4016<\/td>\n<td>Limited corrosion resistance, magnetic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Main_Differences_Between_A2_A4_and_430_Stainless_Steel\"><\/span>Main Differences Between A2, A4 and 430 Stainless Steel<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"A2_AISI_304_EN_14301\"><\/span>A2 (AISI 304 \/ EN 1.4301)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Austenitic stainless steel without molybdenum, containing chromium and nickel. It offers good corrosion resistance in standard environments and is suitable for indoor or general atmospheric applications.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"A4_AISI_316_EN_14401-14404\"><\/span>A4 (AISI 316 \/ EN 1.4401-1.4404)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Austenitic stainless steel with molybdenum (\u22482\u20133%), which improves resistance to chloride corrosion. It is recommended for aggressive, marine, or chemical environments.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"F_430_AISI_430_EN_14016\"><\/span>F \/ 430 (AISI 430 \/ EN 1.4016)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ferritic stainless steel without nickel, magnetic, with lower corrosion resistance compared to A2 and A4. It is suitable for mildly aggressive indoor environments or where cost is the main priority.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Strength_Class\"><\/span>Strength Class<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>After the designation A2\/A4\/F, <strong>a number<\/strong> is always present. This indicates the <strong>minimum mechanical strength of the screw:<\/strong><\/p>\n<ul>\n<li><strong>70 \u2192 700 N\/mm\u00b2<\/strong> (nominal tensile strength)<\/li>\n<li><strong>80 \u2192 800 N\/mm\u00b2<\/strong><\/li>\n<\/ul>\n<p>Examples:<\/p>\n<ul>\n<li><strong>A2-70 \u2192<\/strong> austenitic stainless steel type 304, minimum tensile strength 700 N\/mm\u00b2<\/li>\n<li><strong>A4-80 \u2192<\/strong> austenitic stainless steel type 316, minimum tensile strength 800 N\/mm\u00b2<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Comparison_Table_of_Stainless_Steel_Screw_Classes\"><\/span>Comparison Table of Stainless Steel Screw Classes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<thead>\n<tr>\n<td><strong>Characteristic<\/strong><\/td>\n<td><strong>A2 Steel (304)<\/strong><\/td>\n<td><strong>A4 Steel (316)<\/strong><\/td>\n<td><strong>F\/430 Steel (430)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chemical composition<\/td>\n<td>Cr 18% \u2013 Ni 8%<\/td>\n<td>Cr 16\u201318% \u2013 Ni 10\u201314% \u2013 Mo 2\u20133%<\/td>\n<td>Cr 16\u201318% \u2013 Ni 0%<\/td>\n<\/tr>\n<tr>\n<td>Metallurgical structure<\/td>\n<td>Austenitic<\/td>\n<td>Austenitic<\/td>\n<td>Ferritic<\/td>\n<\/tr>\n<tr>\n<td>Corrosion resistance<\/td>\n<td>Good in indoor and atmospheric environments<\/td>\n<td>Excellent in marine, chemical and chloride environments<\/td>\n<td>Limited, suitable for mildly aggressive indoor environments<\/td>\n<\/tr>\n<tr>\n<td>Magnetism<\/td>\n<td>No (slightly magnetic after deformation)<\/td>\n<td>No (slightly magnetic after deformation)<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<td>ISO 3506 class (screws)<\/td>\n<td>A2<\/td>\n<td>A4<\/td>\n<td>F<\/td>\n<\/tr>\n<tr>\n<td>Indicative price<\/td>\n<td>Medium<\/td>\n<td>High<\/td>\n<td>Low<\/td>\n<\/tr>\n<tr>\n<td>Typical applications<\/td>\n<td>Construction, machinery, window frames<\/td>\n<td>Marine, chemical, food industry<\/td>\n<td>Indoor environments, decorative and economical applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;]If you are looking for a stainless steel screw that offers good corrosion resistance, it is better to choose [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2183,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-2214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-insights"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)<\/title>\n<meta name=\"description\" content=\"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)\" \/>\n<meta property=\"og:description\" content=\"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\" \/>\n<meta property=\"og:site_name\" content=\"Viteria FUSANI\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-27T07:30:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"666\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"supporto@sixor.it\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"supporto@sixor.it\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\"},\"author\":{\"name\":\"supporto@sixor.it\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823\"},\"headline\":\"Stainless Steel Screws A2, A4 and F (AISI 304 vs 316 vs 430): Which One to Choose Against Corrosion?\",\"datePublished\":\"2026-03-27T07:30:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\"},\"wordCount\":395,\"image\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg\",\"articleSection\":[\"Technical Insights\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\",\"url\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\",\"name\":\"Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)\",\"isPartOf\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg\",\"datePublished\":\"2026-03-27T07:30:15+00:00\",\"author\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823\"},\"description\":\"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!\",\"breadcrumb\":{\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage\",\"url\":\"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg\",\"contentUrl\":\"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg\",\"width\":1000,\"height\":666},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/fusani.demosixor.it\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Stainless Steel Screws A2, A4 and F (AISI 304 vs 316 vs 430): Which One to Choose Against Corrosion?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#website\",\"url\":\"https:\/\/fusani.demosixor.it\/en\/\",\"name\":\"Viteria FUSANI\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/fusani.demosixor.it\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823\",\"name\":\"supporto@sixor.it\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/f081cae5b63f312fa152c304b04dc445f1d7771009ff2ab8828d70eae3d4922f?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/f081cae5b63f312fa152c304b04dc445f1d7771009ff2ab8828d70eae3d4922f?s=96&d=mm&r=g\",\"caption\":\"supporto@sixor.it\"},\"sameAs\":[\"http:\/\/viteriafusani.it\"],\"url\":\"https:\/\/fusani.demosixor.it\/en\/author\/supportosixor-it\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)","description":"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)","og_description":"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!","og_url":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/","og_site_name":"Viteria FUSANI","article_published_time":"2026-03-27T07:30:15+00:00","og_image":[{"width":1000,"height":666,"url":"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg","type":"image\/jpeg"}],"author":"supporto@sixor.it","twitter_card":"summary_large_image","twitter_misc":{"Written by":"supporto@sixor.it","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#article","isPartOf":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/"},"author":{"name":"supporto@sixor.it","@id":"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823"},"headline":"Stainless Steel Screws A2, A4 and F (AISI 304 vs 316 vs 430): Which One to Choose Against Corrosion?","datePublished":"2026-03-27T07:30:15+00:00","mainEntityOfPage":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/"},"wordCount":395,"image":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage"},"thumbnailUrl":"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg","articleSection":["Technical Insights"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/","url":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/","name":"Stainless steel screws A2, A4, F (AISI 304 vs 316 vs 430)","isPartOf":{"@id":"https:\/\/fusani.demosixor.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage"},"image":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage"},"thumbnailUrl":"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg","datePublished":"2026-03-27T07:30:15+00:00","author":{"@id":"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823"},"description":"What are the differences between A2, A4, and F stainless steel screws (AISI 304 vs. 316 vs. 430)? Find out in our in-depth article!","breadcrumb":{"@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#primaryimage","url":"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg","contentUrl":"https:\/\/fusani.demosixor.it\/wp-content\/uploads\/2026\/02\/vite-brillante-vs-vite-ruggine.jpg","width":1000,"height":666},{"@type":"BreadcrumbList","@id":"https:\/\/fusani.demosixor.it\/en\/stainless-steel-screws-a2-a4-f\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/fusani.demosixor.it\/en\/"},{"@type":"ListItem","position":2,"name":"Stainless Steel Screws A2, A4 and F (AISI 304 vs 316 vs 430): Which One to Choose Against Corrosion?"}]},{"@type":"WebSite","@id":"https:\/\/fusani.demosixor.it\/en\/#website","url":"https:\/\/fusani.demosixor.it\/en\/","name":"Viteria FUSANI","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/fusani.demosixor.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/c34e7d17972b42631efa6fe49e12b823","name":"supporto@sixor.it","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/fusani.demosixor.it\/en\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/f081cae5b63f312fa152c304b04dc445f1d7771009ff2ab8828d70eae3d4922f?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f081cae5b63f312fa152c304b04dc445f1d7771009ff2ab8828d70eae3d4922f?s=96&d=mm&r=g","caption":"supporto@sixor.it"},"sameAs":["http:\/\/viteriafusani.it"],"url":"https:\/\/fusani.demosixor.it\/en\/author\/supportosixor-it\/"}]}},"_links":{"self":[{"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/posts\/2214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/comments?post=2214"}],"version-history":[{"count":3,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/posts\/2214\/revisions"}],"predecessor-version":[{"id":2215,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/posts\/2214\/revisions\/2215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/media\/2183"}],"wp:attachment":[{"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/media?parent=2214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/categories?post=2214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fusani.demosixor.it\/en\/wp-json\/wp\/v2\/tags?post=2214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}