{"id":21784,"date":"2025-04-01T04:27:00","date_gmt":"2025-03-31T20:27:00","guid":{"rendered":"https:\/\/steelprogroup.com\/?p=21784"},"modified":"2025-03-31T10:50:37","modified_gmt":"2025-03-31T02:50:37","slug":"300m-steel-guideline","status":"publish","type":"post","link":"https:\/\/steelprogroup.com\/pt\/alloy-steel\/300m-steel-guideline\/","title":{"rendered":"Barra de a\u00e7o de liga 300M: AMS 6257, AMS 6417, AMS 6419"},"content":{"rendered":"<p class=\"c5\"><span class=\"c8\">Quando os desafios de engenharia exigem materiais que se recusam a falhar, a 300M Alloy Steel est\u00e1 \u00e0 altura da ocasi\u00e3o. O SteelPro Group \u00e9 especializado em fornecer solu\u00e7\u00f5es de a\u00e7o 300M confi\u00e1veis por engenheiros do mundo todo. <\/span><\/p><p class=\"c5\"><span class=\"c8\">Este artigo desvenda a ci\u00eancia, as aplica\u00e7\u00f5es e os produtos do 300M Alloy Steel. Vamos explorar o que torna o 300M a espinha dorsal da engenharia de alto risco.<\/span><\/p><h2 class=\"wp-block-heading c5 c20\" id=\"h.sovzh6gsi4ou\"><span class=\"c21\">O que \u00e9 a\u00e7o 300M?<\/span><\/h2><p class=\"c5\"><span class=\"c8\">O a\u00e7o 300M \u00e9 uma liga dur\u00e1vel enriquecida com sil\u00edcio, van\u00e1dio, carbono e molibd\u00eanio. \u00c9 uma vers\u00e3o refinada do AISI 4340. Com excelente resist\u00eancia, tenacidade e bom alongamento, ele supera muitas ligas aeroespaciais. Sua capacidade de endurecimento total garante resist\u00eancia uniforme, mesmo em se\u00e7\u00f5es espessas. No entanto, o 300M \u00e9 sens\u00edvel \u00e0 fragiliza\u00e7\u00e3o por hidrog\u00eanio e requer prote\u00e7\u00e3o como oxida\u00e7\u00e3o ou revestimento. Sua resist\u00eancia \u00e0 corros\u00e3o \u00e9 limitada, tornando-o inadequado para usos que exigem altos n\u00edveis de prote\u00e7\u00e3o contra corros\u00e3o.<\/span><\/p><p class=\"c5\"><span class=\"c8\">Certificado pelos padr\u00f5es AMS 6257, AMS 6419 e MIL-S-8844, o SteelPro Group 300M \u00e9 confi\u00e1vel em aplica\u00e7\u00f5es aeroespaciais, como trens de pouso e rotores.<\/span><\/p><h2 class=\"wp-block-heading c5 c20\" id=\"h.qylfhs1ubm4c\"><span class=\"c21\">Especifica\u00e7\u00f5es do a\u00e7o 300M<\/span><\/h2><ul class=\"wp-block-list c14 lst-kix_1chptqxoay4-0 start\"><li><span class=\"c2\">AMS 6257<\/span><\/li>\n\n<li><span class=\"c2\">AMS 6419<\/span><\/li>\n\n<li><span class=\"c2\">AMS 6417<\/span><\/li>\n\n<li><span class=\"c2\">MTL 1201<\/span><\/li>\n\n<li><span class=\"c2\">MIL-S-8844<\/span><\/li>\n\n<li><span class=\"c2\">Boeing BMS 7-26<\/span><\/li>\n\n<li><span class=\"c2\">BS S155<\/span><\/li>\n\n<li><span class=\"c2\">GJB 5063<\/span><\/li>\n\n<li><span class=\"c2\">GB\/T 38809<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">Essas certifica\u00e7\u00f5es garantem desempenho de 300M em aplica\u00e7\u00f5es aeroespaciais e de defesa.<\/span><\/p><h2 class=\"wp-block-heading c5 c20\" id=\"h.ei826o403ifj\"><span class=\"c21\">Composi\u00e7\u00e3o qu\u00edmica do a\u00e7o 300M<\/span><\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Elemento<\/strong><\/td><td><strong>Conte\u00fado<\/strong><\/td><\/tr><tr><td>Carbono (C)<\/td><td>0.4 &#8211; 0.45<\/td><\/tr><tr><td>Sil\u00edcio (Si)<\/td><td>1.45 &#8211; 1.8<\/td><\/tr><tr><td>Mangan\u00eas (Mn)<\/td><td>0.6 &#8211; 0.9<\/td><\/tr><tr><td>F\u00f3sforo (P)<\/td><td>\u2264 0,01<\/td><\/tr><tr><td>Enxofre (S)<\/td><td>\u2264 0,01<\/td><\/tr><tr><td>Cromo (Cr)<\/td><td>0.7 &#8211; 0.95<\/td><\/tr><tr><td>N\u00edquel (Ni)<\/td><td>1.65 &#8211; 2<\/td><\/tr><tr><td>Cobre (Cu)<\/td><td>\u2264 0.2<\/td><\/tr><tr><td>Molibd\u00eanio (Mo)<\/td><td>0.3 &#8211; 0.5<\/td><\/tr><tr><td>Van\u00e1dio (V)<\/td><td>0.05 &#8211; 0.1<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading c5 c20\" id=\"h.aoaybovkfuj0\">300M<span class=\"c21\">&nbsp;Propriedades mec\u00e2nicas do a\u00e7o<\/span><\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Propriedade<\/strong><\/td><td><strong>Valor Longitudinal<\/strong><\/td><td><strong>Valor Transversal<\/strong><\/td><\/tr><tr><td>Limite de escoamento (deslocamento de 0,2%)<\/td><td>1550 MPa (225 ksi)<\/td><td>1550 MPa (225 ksi)<\/td><\/tr><tr><td>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/td><td>1900 \u2013 2100 MPa (\u2265 275 \u2013 305 ksi)<\/td><td>1900 \u2013 2100 MPa (275 \u2013 305 ksi)<\/td><\/tr><tr><td>Alongamento (%)<\/td><td>8%<\/td><td>5%<\/td><\/tr><tr><td>Redu\u00e7\u00e3o de \u00c1rea (%)<\/td><td>30%<\/td><td>20%<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading c5 c20\" id=\"h.drwqidqli630\"><span class=\"c21\">Especifica\u00e7\u00e3o de produtos de a\u00e7o 300M<\/span><\/h2><p class=\"c5\"><span class=\"c8\">Fornecemos a\u00e7o 300M certificado em diferentes formas com tamanhos personalizados. Nosso estoque inclui barras e redondos em uma ampla gama de tamanhos, aderindo \u00e0s especifica\u00e7\u00f5es AMS, MIL e globais. Para dimens\u00f5es especializadas ou requisitos de projeto exclusivos, oferecemos solu\u00e7\u00f5es personalizadas.<\/span><\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Formul\u00e1rio do produto<\/strong><\/td><td><strong>Faixa de tamanho (m\u00e9trico)<\/strong><\/td><td><strong>Faixa de tamanho (imperial)<\/strong><\/td><td><strong>Padr\u00f5es<\/strong><\/td><td><strong>Op\u00e7\u00f5es de acabamento de superf\u00edcie<\/strong><\/td><\/tr><tr><td>Bar<\/td><td>Di\u00e2metro: 6\u2013305 mm<\/td><td>Di\u00e2metro: 0,25\u201312 pol.<\/td><td>AMS 6257, AMS 6417, AMS 6419<\/td><td>Trefilado a frio, mo\u00eddo, laminado a quente<\/td><\/tr><tr><td>Rodadas<\/td><td>Di\u00e2metro: 10\u2013150 mm<\/td><td>Di\u00e2metro: 0,4\u20136 pol.<\/td><td>AMS 6257, AMS 6419<\/td><td>Torneado com precis\u00e3o, polido<\/td><\/tr><tr><td>Tamanhos personalizados<\/td><td>Comprimentos: 3\u201312 m<\/td><td>Comprimentos: 10\u201340 p\u00e9s<\/td><td>MIL-S-8844, BMS 7-26<\/td><td>Usinagem personalizada dispon\u00edvel<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading c27\" id=\"h.syd4m5ybpl6\"><span class=\"c21\">Aplica\u00e7\u00f5es de a\u00e7o 300M<\/span><\/h2><p class=\"c5\">O a\u00e7o de liga 300M se destaca em ambientes de alto estresse que exigem resist\u00eancia, resist\u00eancia \u00e0 fadiga e confiabilidade<span class=\"c8\">:<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_7vl94rd0gs8-0 start\"><li><span class=\"c11\">Aeroespacial<\/span><span class=\"c8\">: Trem de pouso, trilhos de flap, parafusos de alta resist\u00eancia.<\/span><\/li>\n\n<li><span class=\"c11\">Defesa<\/span><span class=\"c8\">: Pe\u00e7as de ve\u00edculos blindados, sistemas de armas.<\/span><\/li>\n\n<li><span class=\"c11\">Transporte<\/span><span class=\"c8\">: Eixos de transmiss\u00e3o, turbocompressores, componentes de motores EV.<\/span><\/li>\n\n<li><span class=\"c11\">Energia<\/span><span class=\"c8\">: V\u00e1lvulas de \u00f3leo\/g\u00e1s, eixos de turbinas.<\/span><\/li>\n\n<li><span class=\"c11\">Industrial<\/span>: Engrenagens de m\u00e1quinas pesadas, ferramentas de alta press\u00e3o.<\/li><\/ul><h2 class=\"wp-block-heading c27\" id=\"h.7398zygjosas\"><span class=\"c21\">Vis\u00e3o geral das propriedades do a\u00e7o de liga 300M<\/span><\/h2><ul class=\"wp-block-list c14 lst-kix_gf6xe325xbm9-0 start\"><li><span class=\"c2\">Resist\u00eancia superior \u00e0 fadiga<\/span><\/li><\/ul><p class=\"c5\">Isso \u00e9<span class=\"c8\">&nbsp;microestrutura ultralimpa, refinada por meio de refus\u00e3o a arco a v\u00e1cuo.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_mg57prjtwxk1-0 start\"><li><span class=\"c2\">Dureza uniforme<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">300M mant\u00e9m dureza consistente em se\u00e7\u00f5es espessas, eliminando pontos fracos em componentes cr\u00edticos.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_u701pl2jwwau-0 start\"><li><span class=\"c2\">Resist\u00eancia equilibrada<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">Mant\u00e9m a ductilidade em altos n\u00edveis de resist\u00eancia, evitando fraturas por impactos repentinos ou sobrecargas.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_uiicufbixah-0 start\"><li><span class=\"c2\">Estabilidade t\u00e9rmica<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">A composi\u00e7\u00e3o enriquecida com sil\u00edcio permite temperaturas de revenimento mais altas, reduzindo a fragilidade e preservando a dureza.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_ht6immwejq20-0 start\"><li><span class=\"c2\">Confiabilidade de n\u00edvel aeroespacial<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">O 300M atende aos rigorosos padr\u00f5es da ind\u00fastria para pureza e rastreabilidade, garantindo desempenho em sistemas cr\u00edticos de voo.<\/span><\/p><h2 class=\"wp-block-heading c5 c20\" id=\"h.nte2vuu8s2wk\"><span class=\"c21\">A\u00e7o 300M vs A\u00e7o 4340<\/span><\/h2><p class=\"c5\"><span class=\"c8\">O a\u00e7o 300M \u00e9 uma liga de alta resist\u00eancia para a ind\u00fastria aeroespacial, enquanto o a\u00e7o 4340 \u00e9 uma liga vers\u00e1til e de resist\u00eancia m\u00e9dia. O 300M oferece melhor resist\u00eancia \u00e0 fadiga e \u00e0 resist\u00eancia.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_yvq9g6utlce6-0 start\"><li><span class=\"c2\">Composi\u00e7\u00e3o<\/span><\/li><\/ul><p class=\"c5\">300M \u00e9 uma vers\u00e3o atualizada do 4340, incorporando sil\u00edcio adicional, van\u00e1dio, mais carbono e molibd\u00eanio.<span class=\"c8\">&nbsp;\u00c9 feito por meio de refus\u00e3o a arco a v\u00e1cuo (VAR), garantindo maior pureza.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_qjs8wdb8nnrn-0 start\"><li><span class=\"c2\">Desempenho<\/span><\/li><\/ul><p class=\"c5\">O 300M \u00e9 mais resistente, mais dur\u00e1vel contra fadiga e menos propenso a sofrer fraturas fr\u00e1geis sob estresse.<span class=\"c8\">&nbsp;O 4340, embora forte, n\u00e3o se compara \u00e0 durabilidade do 300M em condi\u00e7\u00f5es extremas.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_3ul1lun6s7ux-0 start\"><li><span class=\"c2\">Aplicativos<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">300M \u00e9 usado em componentes aeroespaciais, como trens de pouso. 4340 \u00e9 usado em pe\u00e7as automotivas e industriais.<\/span><\/p><ul class=\"wp-block-list c14 lst-kix_ay5pwls52fie-0 start\"><li><span class=\"c2\">Custo<\/span><\/li><\/ul><p class=\"c5\"><span class=\"c8\">O 300M \u00e9 mais caro devido ao seu processo de produ\u00e7\u00e3o e propriedades aprimoradas, enquanto o 4340 \u00e9 mais acess\u00edvel para uso geral.<\/span><\/p><h2 class=\"wp-block-heading c20 c28\" id=\"h.hjp06n97861v\"><span class=\"c21\">A\u00e7o 300M de grau aeroespacial do SteelPro Group<\/span><\/h2><p class=\"c5\"><span class=\"c8\">No SteelPro Group, fornecemos a\u00e7o 300M certificado que atende aos padr\u00f5es AMS 6257, MIL-S-8844 e Boeing BMS 7-26. Cada pe\u00e7a, seja barra, redonda ou cortada sob medida, passa por testes rigorosos para garantir que atenda \u00e0s demandas de aplica\u00e7\u00f5es aeroespaciais, de defesa e industriais de alto estresse.<\/span><\/p><p class=\"c5\"><span class=\"c11 c25\">Precisa de uma solu\u00e7\u00e3o personalizada? <\/span><\/p><p class=\"c5\"><span class=\"c8\">Oferecemos estoque de tamanho preciso, acabamentos de superf\u00edcie e protocolos de tratamento t\u00e9rmico, todos otimizados para seu projeto. Com log\u00edstica global e certifica\u00e7\u00f5es rastre\u00e1veis, garantimos entrega r\u00e1pida e confi\u00e1vel, sem atrasos ou incertezas.<\/span><\/p><p class=\"c4 c26\">&nbsp;<\/p><p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>A\u00e7o-liga 300M: certificado pela AMS 6257, ultra-alta resist\u00eancia para a ind\u00fastria aeroespacial e de defesa. O SteelPro Group fornece estoque testado com precis\u00e3o.<\/p>","protected":false},"author":1,"featured_media":21785,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","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":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","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":[4308],"tags":[],"class_list":["post-21784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alloy-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/posts\/21784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/comments?post=21784"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/posts\/21784\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/media\/21785"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/media?parent=21784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/categories?post=21784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/pt\/wp-json\/wp\/v2\/tags?post=21784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}