{"id":15978,"date":"2026-06-19T09:40:09","date_gmt":"2026-06-19T01:40:09","guid":{"rendered":"https:\/\/aobosteel.com\/?p=15978"},"modified":"2026-06-19T09:40:11","modified_gmt":"2026-06-19T01:40:11","slug":"is-a2-steel-the-same-as-304","status":"publish","type":"post","link":"https:\/\/aobosteel.com\/es\/blog\/is-a2-steel-the-same-as-304\/","title":{"rendered":"\u00bfEl acero A2 es lo mismo que el 304?"},"content":{"rendered":"<h1 class=\"wp-block-heading has-text-align-center\" id=\"h-a2-steel-is-a2-the-same-as-304\">Acero A2: \u00bfEs el A2 lo mismo que el 304?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Depende de si &quot;A2&quot; designa un grado de acero o una marca de fijaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Como grado de acero, no. <a href=\"https:\/\/aobosteel.com\/es\/a2-tool-steel\/\">acero para herramientas A2<\/a> El acero inoxidable 304 y el acero para herramientas A2 son metales completamente diferentes. El acero para herramientas A2 es un acero para herramientas de trabajo en fr\u00edo con alto contenido de carbono y endurecimiento al aire. Es magn\u00e9tico, se endurece mediante tratamiento t\u00e9rmico y se oxida si se deja sin protecci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Como marcaje de elementos de fijaci\u00f3n, s\u00ed. Un perno, tuerca o arandela con la inscripci\u00f3n \u201cA2\u201d cumple con la clase de propiedades A2 de la norma ISO 3506, que corresponde a acero inoxidable austen\u00edtico 304. Este material es resistente a la corrosi\u00f3n, no se puede endurecer mediante tratamiento t\u00e9rmico y, por lo general, no es magn\u00e9tico.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para evitar confusiones, siempre tenga en cuenta el contexto en el que aparece A2. En la pr\u00e1ctica, si se trata de un cuchillo, un bloque de molde, una matriz o un punz\u00f3n, probablemente sea acero para herramientas A2. Si encuentra un perno, una tuerca o una arandela marcados con &quot;A2&quot;, se refieren al acero inoxidable A2 (304). Ahora veamos cada tipo con m\u00e1s detalle.<\/p>\n\n\n\n<h2 id=\"h-a2-tool-steel\" class=\"wp-block-heading\">Acero para herramientas A2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El acero para herramientas A2 es una aleaci\u00f3n media, <a href=\"https:\/\/aobosteel.com\/es\/air-hardening-tool-steel\/\">acero para herramientas de trabajo en fr\u00edo endurecible al aire<\/a>. Una composici\u00f3n t\u00edpica es de aproximadamente 1,0% de carbono, 5,0% de cromo, 1,0% de molibdeno y 0,20% de vanadio.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El cromo 5% no es suficiente para hacerlo inoxidable, por lo que el acero se oxida o desarrolla p\u00e1tina al exponerse a la humedad. Esa misma composici\u00f3n qu\u00edmica le permite endurecerse al aire con un cambio dimensional m\u00ednimo, raz\u00f3n por la cual se elige para piezas que deben mantener tolerancias estrictas despu\u00e9s del endurecimiento. <a href=\"https:\/\/aobosteel.com\/es\/a2-tool-steel-heat-treatment-guide\/\">tratamiento t\u00e9rmico<\/a> El acero A2 alcanza una dureza de 58-62 HRC, un equilibrio entre tenacidad y resistencia al desgaste. Sus usos comunes incluyen punzones de troquelado, matrices de recorte, herramientas de conformado y cuchillas personalizadas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A nivel internacional, el acero para herramientas A2 tambi\u00e9n se comercializa como DIN 1.2363 en Europa y JIS SKD12 en Jap\u00f3n.<\/p>\n\n\n\n<h2 id=\"h-a2-stainless-304\" class=\"wp-block-heading\">Acero inoxidable A2 (304)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando un perno o tornillo lleva la inscripci\u00f3n \u201cA2\u201d, indica que cumple con la norma ISO 3506 para elementos de fijaci\u00f3n de acero inoxidable. La \u201cA\u201d significa austen\u00edtico y el \u201c2\u201d identifica el grupo de aleaci\u00f3n, que en la pr\u00e1ctica corresponde al acero inoxidable tipo 304.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El acero inoxidable A2 contiene aproximadamente 181 TP3T de cromo y 81 TP3T de n\u00edquel, composici\u00f3n conocida como acero inoxidable \u201c18-8\u201d. No se puede endurecer mediante tratamiento t\u00e9rmico y solo se fortalece mediante trabajo en fr\u00edo. Su alto contenido de cromo y n\u00edquel le confiere una gran resistencia a la corrosi\u00f3n en ambientes h\u00famedos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Entre los grados equivalentes para el acero de fijaci\u00f3n A2 se incluyen el AISI 304 en Estados Unidos y el EN 1.4301 en Europa.<\/p>\n\n\n\n<h2 id=\"h-side-by-side-comparison\" class=\"wp-block-heading\">Comparaci\u00f3n lado a lado<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Propiedad<\/td><td>Acero para herramientas A2<\/td><td>Acero inoxidable A2 \/ 304<\/td><\/tr><tr><td>Tipo<\/td><td>Acero para herramientas de trabajo en fr\u00edo<\/td><td>acero inoxidable austen\u00edtico<\/td><\/tr><tr><td>Aleaci\u00f3n principal<\/td><td>1,0% C, 5,0% Cr, 1,0% Mo, 0,20% V<\/td><td>~18% Cr, ~8% Ni<\/td><\/tr><tr><td>Resistencia a la corrosi\u00f3n<\/td><td>Bajo, se oxidar\u00e1<\/td><td>Alta resistencia a la corrosi\u00f3n<\/td><\/tr><tr><td>Templable mediante tratamiento t\u00e9rmico.<\/td><td>S\u00ed, endurecimiento al aire<\/td><td>No, solo mediante trabajo en fr\u00edo.<\/td><\/tr><tr><td>Magn\u00e9tico<\/td><td>S\u00ed<\/td><td>No, en su mayor\u00eda no magn\u00e9ticos<\/td><\/tr><tr><td>dureza t\u00edpica<\/td><td>58 a 62 HRC<\/td><td>M\u00e1s suave, medido en HRB<\/td><\/tr><tr><td>Calificaciones equivalentes<\/td><td>DIN 1.2363, JIS SKD12<\/td><td>AISI 304, EN 1.4301<\/td><\/tr><tr><td>Uso t\u00edpico<\/td><td>Punzones, matrices de conformado, moldes, cuchillos<\/td><td>Pernos, tuercas, tornillos, arandelas<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"h-how-to-tell-which-one-you-have\" class=\"wp-block-heading\">C\u00f3mo saber cu\u00e1l tienes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El contexto da la respuesta: los componentes roscados son casi siempre de acero inoxidable A2 (304), mientras que un bloque pesado de acero para moldes, matrices o herramientas de corte es de acero para herramientas A2.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si a\u00fan necesita confirmarlo, tres comprobaciones r\u00e1pidas: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prueba magn\u00e9tica: Acerque un im\u00e1n a la muestra. Si el metal atrae el im\u00e1n con fuerza y se adhiere firmemente, probablemente se trate de acero para herramientas A2. Si la atracci\u00f3n es m\u00ednima o nula, especialmente en piezas recocidas, se trata de acero inoxidable A2 (304). El acero inoxidable trabajado en fr\u00edo puede presentar una d\u00e9bil atracci\u00f3n magn\u00e9tica.<\/li>\n\n\n\n<li>Prueba de dureza: Intente rayar una botella de vidrio con la muestra. Si la muestra raya f\u00e1cilmente el vidrio, se trata de acero para herramientas A2 endurecido (58-62 HRC). Si no raya el vidrio, probablemente sea acero inoxidable A2 (304), que es m\u00e1s blando. <\/li>\n\n\n\n<li>Prueba de oxidaci\u00f3n: Coloque una gota de agua o jugo \u00e1cido sobre la superficie met\u00e1lica y d\u00e9jela actuar toda la noche. Si la mancha se decolora o se oxida, se trata de acero para herramientas A2. Si la mancha se limpia f\u00e1cilmente, se trata de acero inoxidable A2 (304).<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\">Preguntas frecuentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1781832756732\"><strong class=\"schema-faq-question\">\u00bfEl acero para herramientas A2 es inoxidable?<\/strong> <p class=\"schema-faq-answer\"> No. Contiene solo 5% de cromo, por debajo del m\u00ednimo aproximado de 10,5% requerido para el acero inoxidable, por lo que se oxida a menos que se engrase o se recubra.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781832770411\"><strong class=\"schema-faq-question\">\u00bfEl acero inoxidable A2 es magn\u00e9tico?<\/strong> <p class=\"schema-faq-answer\">En general, el acero A2 (304) es austen\u00edtico y no magn\u00e9tico, aunque un trabajo en fr\u00edo intenso puede hacerlo ligeramente magn\u00e9tico. Nunca atrae un im\u00e1n con la misma fuerza que el acero al carbono o el acero para herramientas.<\/p> <\/div> <\/div>\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links yoast-seo-related-links\">\n<li><a href=\"https:\/\/aobosteel.com\/es\/420-stainless-steel\/\">Acero inoxidable 420 | 1.2083 | 2Cr13<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/a2-steel-composition\/\">Composici\u00f3n del acero A2 | Gu\u00eda qu\u00edmica del acero para herramientas A2<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/blog\/is-a2-tool-steel-wear-resistant\/\">\u00bfEs resistente al desgaste el acero para herramientas A2? Dureza, usos y comparaci\u00f3n.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/420-stainless-steel-heat-treatment\/\">Gu\u00eda de tratamiento t\u00e9rmico del acero 420 | Endurecimiento, temple y revenido<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/blog\/knife-steel-types\/\">Tipos de acero para cuchillos: C\u00f3mo elegir el adecuado<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>A2 Steel: Is A2 the Same as 304? It depends on whether \u201cA2\u201d names a steel grade or a fastener marking. As a steel grade, no. A2 tool steel and 304 stainless steel are completely different metals. A2 tool steel is a high-carbon, air-hardening cold work tool steel that is magnetic, hardens by heat treatment, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15979,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[22],"tags":[],"class_list":["post-15978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Is A2 Steel the Same as 304? - AoboSteel<\/title>\n<meta name=\"description\" content=\"No. A2 tool steel and 304 stainless are different metals, but a bolt marked A2 (ISO 3506) is made from 304. Here is how to tell them apart.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/es\/blog\/is-a2-steel-the-same-as-304\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is A2 Steel the Same as 304?\" \/>\n<meta property=\"og:description\" content=\"No. A2 tool steel and 304 stainless are different metals, but a bolt marked A2 (ISO 3506) is made from 304. 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A2 (304) is austenitic and non-magnetic, though heavy cold working can make it slightly magnetic. It never attracts a magnet as strongly as carbon or tool steel.","inLanguage":"es"},"inLanguage":"es"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"A2 Steel: Is A2 the Same as 304? It depends on whether \u201cA2\u201d names a steel grade or a fastener marking. As a steel grade, no. A2 tool steel and 304 stainless steel are completely different metals. A2 tool steel is a high-carbon, air-hardening cold work tool steel that is magnetic, hardens by heat treatment,&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/06\/Is-A2-Steel-the-Same-as-304-12x12.avif",12,12,true]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/aobosteel.com\/es\/blog\/category\/blog\/\" rel=\"category tag\">Blog<\/a>","rttpg_excerpt":"A2 Steel: Is A2 the Same as 304? It depends on whether \u201cA2\u201d names a steel grade or a fastener marking. As a steel grade, no. A2 tool steel and 304 stainless steel are completely different metals. A2 tool steel is a high-carbon, air-hardening cold work tool steel that is magnetic, hardens by heat treatment,&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/posts\/15978","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/comments?post=15978"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/posts\/15978\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media\/15979"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media?parent=15978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/categories?post=15978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/tags?post=15978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}