{"id":2605,"date":"2026-04-29T17:20:08","date_gmt":"2026-04-29T09:20:08","guid":{"rendered":"https:\/\/jblstainless.com\/?p=2605"},"modified":"2026-04-29T17:30:57","modified_gmt":"2026-04-29T09:30:57","slug":"diferenca-entre-o-aco-inoxidavel-430-e-o-aco-inoxidavel-304","status":"publish","type":"post","link":"https:\/\/jblstainless.com\/pt\/difference-between-430-stainless-steel-and-304-stainless-steel\/","title":{"rendered":"Diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 430 e o a\u00e7o inoxid\u00e1vel 304"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2605\" class=\"elementor elementor-2605\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-caed30f e-flex e-con-boxed e-con e-parent\" data-id=\"caed30f\" 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-88d57ea elementor-widget elementor-widget-text-editor\" data-id=\"88d57ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Os a\u00e7os inoxid\u00e1veis 430 e 304 s\u00e3o os tipos mais utilizados. O grau 304 oferece melhor resist\u00eancia \u00e0 corros\u00e3o e maior resist\u00eancia ao calor, tornando-o adequado para utens\u00edlios de cozinha e de mesa; enquanto o grau 430 \u00e9 relativamente barato e tem elevada dureza, pelo que \u00e9 frequentemente utilizado para facas de cozinha e artigos decorativos. Neste blogue, vamos discutir a diferen\u00e7a essencial entre o a\u00e7o inoxid\u00e1vel 430 e o <a href=\"https:\/\/jblstainless.com\/pt\/can-316-stainless-steel-rust\/\">A\u00e7o inoxid\u00e1vel 304<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73b44b3 elementor-widget elementor-widget-text-editor\" data-id=\"73b44b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/jblstainless.com\/pt\/tubo-de-aco-inoxidavel-430\/\"><span style=\"text-decoration: underline;\"><strong>A\u00e7o inoxid\u00e1vel 430:<\/strong><\/span><\/a><\/p><p>O a\u00e7o inoxid\u00e1vel ferr\u00edtico da s\u00e9rie 400, obt\u00e9m a sua resist\u00eancia \u00e0 corros\u00e3o principalmente do cr\u00f3mio 16-18% e quase n\u00e3o cont\u00e9m n\u00edquel. \u00c9 magn\u00e9tico, tem uma boa condutividade t\u00e9rmica e \u00e9 f\u00e1cil de moldar e maquinar, o que o torna adequado para ambientes interiores de gama baixa a m\u00e9dia ou ambientes suaves.<\/p><p><a href=\"https:\/\/jblstainless.com\/pt\/tubo-sem-costura-de-aco-inoxidavel-304\/\"><span style=\"text-decoration: underline;\"><strong>A\u00e7o inoxid\u00e1vel 304:<\/strong><\/span><\/a><\/p><p>Pertence \u00e0 s\u00e9rie 300 de a\u00e7os inoxid\u00e1veis austen\u00edticos (normalmente conhecidos como a\u00e7o inoxid\u00e1vel 18\/8), contendo 18-20% de cr\u00f3mio e 8-10,5% de n\u00edquel, n\u00e3o magn\u00e9tico (ou fracamente magn\u00e9tico), oferece um excelente desempenho global, o que o torna o tipo de a\u00e7o inoxid\u00e1vel mais utilizado em todo o mundo.<\/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-71bf8e4 e-flex e-con-boxed e-con e-parent\" data-id=\"71bf8e4\" 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-f6d1679 elementor-widget elementor-widget-heading\" data-id=\"f6d1679\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 430 e o a\u00e7o inoxid\u00e1vel 304\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae9ab90 elementor-widget elementor-widget-heading\" data-id=\"ae9ab90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. diferen\u00e7a fundamental: Composi\u00e7\u00e3o qu\u00edmica<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11c58fc elementor-widget elementor-widget-text-editor\" data-id=\"11c58fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/jblstainless.com\/pt\/can-316-stainless-steel-rust\/\">A\u00e7o inoxid\u00e1vel 304<\/a> cont\u00e9m n\u00edquel, enquanto o 430 n\u00e3o cont\u00e9m nenhum - esta \u00e9 a raz\u00e3o fundamental para as suas diferen\u00e7as de desempenho.<\/p><ul><li>Grau 304: 18% de cr\u00f3mio + 8% de n\u00edquel. O n\u00edquel cria uma estrutura \u201causten\u00edtica\u201d est\u00e1vel e d\u00factil.<\/li><li>Grau 430: 16-18% Cr\u00f3mio + 0% N\u00edquel. Este \u00e9 um a\u00e7o \u201cferr\u00edtico\u201d, que \u00e9 inerentemente magn\u00e9tico.<\/li><\/ul><table class=\"table\"><tbody><tr><th>Carater\u00edstica<\/th><th><a href=\"https:\/\/jblstainless.com\/pt\/can-316-stainless-steel-rust\/\">A\u00e7o inoxid\u00e1vel 304<\/a><\/th><th>A\u00e7o inoxid\u00e1vel 430<\/th><\/tr><tr><td>Composi\u00e7\u00e3o qu\u00edmica<\/td><td>18% Cr + 8% Ni<\/td><td>16-18% Cr + 0% Ni<\/td><\/tr><tr><td>Resist\u00eancia \u00e0 corros\u00e3o<\/td><td>Alta (resistente a sal\/\u00e1cidos)<\/td><td>Moderado (ambiente seco)<\/td><\/tr><tr><td>Magn\u00e9tico<\/td><td>N\u00e3o (n\u00e3o magn\u00e9tico)<\/td><td>Sim (magn\u00e9tico)<\/td><\/tr><tr><td>Custo<\/td><td>Superior (dependente do n\u00edquel)<\/td><td>Inferior (Est\u00e1vel e Economia)<\/td><\/tr><tr><td>Melhor para<\/td><td>Ambientes de alta temperatura, alimenta\u00e7\u00e3o, medicina<\/td><td>Electrodom\u00e9sticos, Autom\u00f3vel, Guarni\u00e7\u00e3o<\/td><\/tr><\/tbody><\/table>\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-5c8eb29 e-flex e-con-boxed e-con e-parent\" data-id=\"5c8eb29\" 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-6cea48c elementor-widget elementor-widget-heading\" data-id=\"6cea48c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Resist\u00eancia \u00e0 corros\u00e3o\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dd04942 elementor-widget elementor-widget-text-editor\" data-id=\"dd04942\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>O n\u00edquel 8% no 304 proporciona uma resist\u00eancia superior \u00e0 corros\u00e3o e \u00e0 oxida\u00e7\u00e3o.<\/p><p><strong>Grau 304<\/strong> oferece uma resist\u00eancia superior \u00e0 corros\u00e3o, tem um bom desempenho em ambientes expostos \u00e0 humidade, \u00e1cidos suaves ou n\u00e9voa salina e \u00e9 adequado para mobili\u00e1rio de exterior, linhas de processamento de alimentos e ferramentas cir\u00fargicas.<\/p><p><strong>A\u00e7o inoxid\u00e1vel 430<\/strong> \u00e9 altamente resistente \u00e0 oxida\u00e7\u00e3o em ambientes secos e interiores (como a sua cozinha). No entanto, \u00e9 suscet\u00edvel de furar em regi\u00f5es costeiras ou de elevada humidade. Se o seu produto permanecer no interior e seco, o 430 \u00e9 uma escolha perfeitamente fi\u00e1vel.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46f7187 elementor-widget elementor-widget-text-editor\" data-id=\"46f7187\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Aviso:<\/p><p>Uma forma simples de distinguir entre 430 e <a href=\"https:\/\/jblstainless.com\/pt\/can-316-stainless-steel-rust\/\">A\u00e7o inoxid\u00e1vel 304<\/a> \u00e9 utilizar um \u00edman. O a\u00e7o 430 \u00e9 fortemente atra\u00eddo por \u00edmanes. O grau 304 n\u00e3o \u00e9 magn\u00e9tico no seu estado recozido (embora possa tornar-se ligeiramente magn\u00e9tico ap\u00f3s um trabalho a frio intenso).<\/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-eaae0cc e-flex e-con-boxed e-con e-parent\" data-id=\"eaae0cc\" 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-16b96e7 elementor-widget elementor-widget-heading\" data-id=\"16b96e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Custo<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4eb40c4 elementor-widget elementor-widget-text-editor\" data-id=\"4eb40c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>A\u00e7o inoxid\u00e1vel 430<\/strong>: Pre\u00e7o mais baixo e boa rela\u00e7\u00e3o custo-benef\u00edcio<\/li><li><strong><a href=\"https:\/\/jblstainless.com\/pt\/can-316-stainless-steel-rust\/\">A\u00e7o inoxid\u00e1vel 304<\/a><\/strong>: Pre\u00e7o mais elevado (devido ao seu teor de n\u00edquel)<\/li><\/ul><p>Devido ao facto de o n\u00edquel ser uma mercadoria cara e vol\u00e1til na London Metal Exchange (LME), o pre\u00e7o do 304 flutua descontroladamente. O grau 430 \u00e9 um grau \u201csem n\u00edquel\u201d, o que torna o seu pre\u00e7o significativamente mais baixo e mais est\u00e1vel.<\/p><p>Em muitas aplica\u00e7\u00f5es industriais, a mudan\u00e7a de 304 para 430 pode reduzir os custos de material em 30% a 50%.<\/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-976e673 e-flex e-con-boxed e-con e-parent\" data-id=\"976e673\" 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-70f0ff9 elementor-widget elementor-widget-heading\" data-id=\"70f0ff9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Trabalhabilidade<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9d4f1b elementor-widget elementor-widget-text-editor\" data-id=\"f9d4f1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>4.1 Soldabilidade:<\/strong><\/p><ul><li>304: F\u00e1cil de soldar<\/li><li>430: Dif\u00edcil de soldar; requer pr\u00e9-aquecimento e recozimento; propenso a fissuras<\/li><\/ul><p>\u00a0<\/p><p><strong>4.2 Fabrico:<\/strong><\/p><ul><li>304: Melhor conformabilidade<\/li><li>430: Formabilidade geral<\/li><\/ul>\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-1f1fb81 e-flex e-con-boxed e-con e-parent\" data-id=\"1f1fb81\" 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-b4570d7 elementor-widget elementor-widget-heading\" data-id=\"b4570d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Aplica\u00e7\u00e3o<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69af240 elementor-widget elementor-widget-heading\" data-id=\"69af240\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Escolha 304 Para:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-940a0bd elementor-widget elementor-widget-text-editor\" data-id=\"940a0bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Alimentos e bebidas: Tanques de armazenamento, equipamento para cervejarias, processamento de leite.<\/li><li>M\u00e9dico: Instrumentos cir\u00fargicos, tabuleiros de esteriliza\u00e7\u00e3o.<\/li><li>Arquitetura: Corrim\u00f5es costeiros, revestimentos exteriores, coberturas.<\/li><li>Produtos qu\u00edmicos: Recipientes sob press\u00e3o e tubagens para produtos qu\u00edmicos corrosivos.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ea1326 elementor-widget elementor-widget-heading\" data-id=\"4ea1326\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Selecionar 430 Para:\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-679393a elementor-widget elementor-widget-text-editor\" data-id=\"679393a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Electrodom\u00e9sticos: Pain\u00e9is para frigor\u00edficos, revestimentos para m\u00e1quinas de lavar loi\u00e7a, tambores para m\u00e1quinas de lavar roupa.<\/li><li>Ind\u00fastria autom\u00f3vel: Componentes do sistema de escape, tiras de acabamento decorativas.<\/li><li>Design de interiores: Pain\u00e9is de elevador, placas de remate, pormenores de mobili\u00e1rio de interior.<\/li><li>Utens\u00edlios dom\u00e9sticos: Talheres econ\u00f3micos, bacias de lavat\u00f3rio (interior).<\/li><\/ul>\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-0bf43ef e-flex e-con-boxed e-con e-parent\" data-id=\"0bf43ef\" 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-fff8e0c elementor-widget elementor-widget-heading\" data-id=\"fff8e0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Como escolher o a\u00e7o inoxid\u00e1vel 430 e o a\u00e7o inoxid\u00e1vel 304<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d0de2e elementor-widget elementor-widget-text-editor\" data-id=\"5d0de2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Escolha 430<\/strong>: Para aplica\u00e7\u00f5es com or\u00e7amentos limitados, decora\u00e7\u00e3o de interiores, baixos requisitos de resist\u00eancia \u00e0 corros\u00e3o e boa condutividade t\u00e9rmica.<\/p><p><strong>Escolha 304:<\/strong> Para equipamento em contacto com alimentos, ambientes exteriores ou h\u00famidos, requisitos elevados de resist\u00eancia \u00e0 corros\u00e3o e durabilidade a longo prazo para componentes-chave.<\/p><div>Contacte-nos, iremos ajud\u00e1-lo a analisar o seu ambiente de aplica\u00e7\u00e3o para garantir que obt\u00e9m o m\u00e1ximo valor.<\/div>\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\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>O a\u00e7o inoxid\u00e1vel 304 cont\u00e9m n\u00edquel, enquanto o 430 n\u00e3o cont\u00e9m - esta \u00e9 a raz\u00e3o fundamental para as suas diferen\u00e7as de desempenho.<\/p>","protected":false},"author":1,"featured_media":2608,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-2605","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/posts\/2605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/comments?post=2605"}],"version-history":[{"count":2,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/posts\/2605\/revisions"}],"predecessor-version":[{"id":2607,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/posts\/2605\/revisions\/2607"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/media\/2608"}],"wp:attachment":[{"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/media?parent=2605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/categories?post=2605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jblstainless.com\/pt\/wp-json\/wp\/v2\/tags?post=2605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}