{"id":12019,"date":"2026-01-08T11:32:13","date_gmt":"2026-01-08T03:32:13","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12019"},"modified":"2026-04-02T14:35:00","modified_gmt":"2026-04-02T06:35:00","slug":"selection-of-tool-steel-for-copper-and-brass-extrusion","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/selection-of-tool-steel-for-copper-and-brass-extrusion\/","title":{"rendered":"Sele\u00e7\u00e3o de a\u00e7os-ferramenta para extrus\u00e3o de cobre e lat\u00e3o | Fornecedor H21 H26"},"content":{"rendered":"
\n

Sele\u00e7\u00e3o de a\u00e7o ferramenta para extrus\u00e3o de cobre e lat\u00e3o<\/h1>\n\n\n\n

Na extrus\u00e3o de cobre e lat\u00e3o, um tarugo aquecido \u00e9 for\u00e7ado atrav\u00e9s de uma matriz sob alta press\u00e3o para formar perfis cont\u00ednuos. As temperaturas t\u00edpicas do processo variam de 650 a 1100 \u00b0C, com press\u00f5es unit\u00e1rias superiores a 690 MPa e atingindo at\u00e9 1035 MPa em opera\u00e7\u00f5es de alta exig\u00eancia.<\/p>\n\n\n\n

Nessas condi\u00e7\u00f5es, a falha das ferramentas \u00e9 causada principalmente por tr\u00eas mecanismos:
Deforma\u00e7\u00e3o pl\u00e1stica em altas temperaturas, desgaste superficial devido ao fluxo de metal e fadiga t\u00e9rmica causada por ciclos repetidos de aquecimento e resfriamento. Esses mecanismos determinam diretamente a vida \u00fatil e a estabilidade dimensional da ferramenta e, portanto, definem os requisitos para a sele\u00e7\u00e3o do a\u00e7o ferramenta.<\/p>\n\n\n\n

Fatores de sele\u00e7\u00e3o<\/h2>\n\n\n\n

A sele\u00e7\u00e3o do a\u00e7o ferramenta deve levar em considera\u00e7\u00e3o os modos de falha predominantes na extrus\u00e3o de cobre e lat\u00e3o, em vez das propriedades gerais do material.<\/p>\n\n\n\n

Dureza a quente e resist\u00eancia ao revenimento
<\/strong>Na temperatura de extrus\u00e3o, a resist\u00eancia t\u00e9rmica insuficiente resulta em deforma\u00e7\u00e3o pl\u00e1stica dos mancais da matriz e perda de precis\u00e3o dimensional. O a\u00e7o deve manter a dureza e a resist\u00eancia \u00e0 compress\u00e3o sob exposi\u00e7\u00e3o t\u00e9rmica prolongada.<\/p>\n\n\n\n

Resist\u00eancia ao desgaste e \u00e0 eros\u00e3o
<\/strong>O fluxo cont\u00ednuo de metal causa perda de material na superf\u00edcie, especialmente em regi\u00f5es de alta velocidade. Os a\u00e7os para ferramentas devem conter carbonetos est\u00e1veis para resistir \u00e0 abras\u00e3o e evitar a r\u00e1pida degrada\u00e7\u00e3o do perfil.<\/p>\n\n\n\n

Resist\u00eancia ao Impacto
<\/strong>As flutua\u00e7\u00f5es de carga durante a entrada do tarugo e o fluxo inst\u00e1vel podem gerar tens\u00f5es localizadas. A tenacidade insuficiente leva ao aparecimento de fissuras ou falhas nas bordas, principalmente em \u00e1reas de alta tens\u00e3o.<\/p>\n\n\n\n

Resist\u00eancia \u00e0 fadiga t\u00e9rmica (fissura\u00e7\u00e3o por calor)
<\/strong>Ciclos repetidos de aquecimento e resfriamento geram fissuras superficiais que se propagam ao longo do tempo. A resist\u00eancia \u00e0 fadiga t\u00e9rmica \u00e9 fundamental para manter a integridade da superf\u00edcie do chip e prolongar sua vida \u00fatil.<\/p>\n\n\n\n

A\u00e7os para ferramentas recomendados<\/h2>\n\n\n\n

Com base no equil\u00edbrio entre resist\u00eancia a altas temperaturas, resist\u00eancia ao desgaste e resist\u00eancia \u00e0 fadiga t\u00e9rmica, as seguintes classes s\u00e3o utilizadas para diferentes fun\u00e7\u00f5es em ferramentas:<\/p>\n\n\n\n

\n

A\u00e7o ferramenta AISI H10 | 1.2365 | SKD7<\/h3>\n\n\n\n

O a\u00e7o H10 \u00e9 selecionado quando a fadiga t\u00e9rmica \u00e9 o modo de falha predominante, em vez do desgaste. Ele oferece melhor resist\u00eancia \u00e0 fissura\u00e7\u00e3o t\u00e9rmica do que os a\u00e7os \u00e0 base de tungst\u00eanio, tornando-o adequado para mandris e blocos de fixa\u00e7\u00e3o na extrus\u00e3o de lat\u00e3o, onde a ciclagem t\u00e9rmica \u00e9 frequente. A dureza t\u00edpica \u00e9 de 42\u201348 HRC.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes de fornecimento de materiais H10.<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n

A\u00e7o ferramenta AISI H21 | 1.2581 | SKD5<\/h3>\n\n\n\n

O a\u00e7o H21 \u00e9 selecionado quando a resist\u00eancia ao amolecimento t\u00e9rmico \u00e9 o requisito principal. Ele mant\u00e9m sua resist\u00eancia sob altas temperaturas e cargas de compress\u00e3o constantes, tornando-o adequado para matrizes de extrus\u00e3o e blocos de teste. Sua dureza de trabalho t\u00edpica \u00e9 de 42 a 48 HRC, reduzindo o risco de fissuras sob carga.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes do fornecimento de materiais do H21.<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n

AISI H12<\/h3>\n\n\n\n

O a\u00e7o H12 \u00e9 selecionado para componentes sujeitos a alta carga mec\u00e2nica, mas menor exposi\u00e7\u00e3o t\u00e9rmica. Sua maior tenacidade reduz o risco de fissuras sob press\u00e3o, tornando-o adequado para componentes de suporte, como camisas, cilindros e refor\u00e7os. A dureza t\u00edpica \u00e9 de 40\u201346 HRC.<\/p>\n<\/div>\n\n\n\n

\n

AISI H19<\/h3>\n\n\n\n

O a\u00e7o H19 \u00e9 utilizado nas condi\u00e7\u00f5es mais severas, onde altas temperaturas e press\u00f5es precisam ser suportadas sem amolecimento. A adi\u00e7\u00e3o de cobalto melhora a resist\u00eancia ao amolecimento t\u00e9rmico, permitindo que ele mantenha a estabilidade dimensional. \u00c9 tipicamente usado para insertos e n\u00facleos de matrizes com dureza de 45\u201352 HRC.<\/p>\n<\/div>\n\n\n\n

\n

AISI H26<\/h3>\n\n\n\n

O a\u00e7o H26 \u00e9 utilizado em condi\u00e7\u00f5es mais severas, onde temperaturas mais elevadas e maior fluxo de metal aceleram o desgaste. Comparado ao H21, oferece melhor resist\u00eancia ao desgaste e \u00e0 eros\u00e3o em altas temperaturas, por\u00e9m com menor tenacidade. \u00c9 tipicamente aplicado em matrizes de alta carga operando com dureza de 45\u201350 HRC.<\/p>\n<\/div>\n\n\n\n

Tabela Resumo<\/h2>\n\n\n\n
A\u00e7o ferramenta de alta qualidade<\/td>Base de liga met\u00e1lica<\/td>Trabalho \u00e1rduo<\/td>Vantagem prim\u00e1ria<\/td>Aplica\u00e7\u00e3o t\u00edpica<\/td><\/tr>
AISI H21<\/td>Tungst\u00eanio<\/td>42\u201348 HRC<\/td>Resist\u00eancia ao amolecimento t\u00e9rmico sob carga<\/td>Matrizes de extrus\u00e3o, blocos fict\u00edcios<\/td><\/tr>
AISI H26<\/td>Tungst\u00eanio<\/td>45\u201350 HRC<\/td>Resist\u00eancia ao desgaste e \u00e0 eros\u00e3o em altas temperaturas<\/td>matrizes de carga pesada<\/td><\/tr>
AISI H10<\/td>Cromo<\/td>42\u201348 HRC<\/td>Resist\u00eancia \u00e0 fadiga t\u00e9rmica (fissura\u00e7\u00e3o por calor)<\/td>Mandris, blocos fict\u00edcios<\/td><\/tr>
AISI H19<\/td>Cr-W-Co<\/td>45\u201352 HRC<\/td>Estabilidade sob condi\u00e7\u00f5es combinadas de alta temperatura e press\u00e3o.<\/td>Insertos de matriz, n\u00facleos<\/td><\/tr>
AISI H12<\/td>Cromo<\/td>40\u201346 HRC<\/td>Alta resist\u00eancia sob carga compressiva<\/td>Forros, ar\u00edetes, refor\u00e7os<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Selection of Tool Steel for Copper and Brass Extrusion In copper and brass extrusion, a heated billet is forced through a die under high pressure to form continuous profiles. Typical process temperatures range from 650\u20131100\u00b0C, with unit pressures exceeding 690 MPa and reaching up to 1035 MPa in heavy-duty operations. Under these conditions, tooling failure […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"knowledge-article","_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":"","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":""},"class_list":["post-12019","page","type-page","status-publish","hentry"],"yoast_head":"\nCopper & Brass Extrusion Tool Steel Selection | H21 H26 Supplier | AoboSteel<\/title>\n<meta name=\"description\" content=\"Learn how to select tool steel for copper and brass extrusion. Compare H21, H26, H10, H19 and H12 based on hot strength, wear and thermal fatigue. Bulk supply available from Aobo Steel.\" \/>\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\/pt\/selection-of-tool-steel-for-copper-and-brass-extrusion\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Copper & Brass Extrusion Tool Steel Selection | H21 H26 Supplier\" \/>\n<meta property=\"og:description\" content=\"Learn how to select tool steel for copper and brass extrusion. Compare H21, H26, H10, H19 and H12 based on hot strength, wear and thermal fatigue. 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Typical process temperatures range from 650\u20131100\u00b0C, with unit pressures exceeding 690 MPa and reaching up to 1035 MPa in heavy-duty operations. Under these conditions, tooling failure…","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Selection of Tool Steel for Copper and Brass Extrusion In copper and brass extrusion, a heated billet is forced through a die under high pressure to form continuous profiles. Typical process temperatures range from 650\u20131100\u00b0C, with unit pressures exceeding 690 MPa and reaching up to 1035 MPa in heavy-duty operations. 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