{"id":9555,"date":"2025-08-05T15:18:22","date_gmt":"2025-08-05T07:18:22","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9555"},"modified":"2026-07-24T11:31:22","modified_gmt":"2026-07-24T03:31:22","slug":"selection-of-steels-for-cold-extrusion","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/selection-of-steels-for-cold-extrusion\/","title":{"rendered":"Guia de Sele\u00e7\u00e3o de A\u00e7o para Matrizes de Extrus\u00e3o a Frio | Explica\u00e7\u00e3o dos A\u00e7os D2, A2, H13 e M2"},"content":{"rendered":"
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In\u00edcio<\/mark> <\/a>> Conforma\u00e7\u00e3o a frio e extrus\u00e3o<\/mark> <\/a> > Matrizes de corte e perfura\u00e7\u00e3o<\/h5><\/div>\n\n\n\n

Guia t\u00e9cnico para sele\u00e7\u00e3o de a\u00e7os para matrizes de extrus\u00e3o a frio<\/h2><\/div>\n\n\n\n

\u2714100% Testado por Ultrassom para Garantia de Qualidade<\/h4><\/div>\n\n\n\n

\u2714Dispon\u00edvel em fus\u00e3o ESR, LF+VD<\/h4><\/div>\n\n\n\n

\u2714Pre\u00e7os competitivos direto da f\u00e1brica<\/h4><\/div>\n\n\n\n
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Consulta r\u00e1pida<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
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Na manufatura moderna, a extrus\u00e3o a frio \u00e9 um processo fundamental para a produ\u00e7\u00e3o em massa de componentes de precis\u00e3o nos setores automotivo, aeroespacial e de m\u00e1quinas industriais. A vida \u00fatil das matrizes de extrus\u00e3o a frio muitas vezes determina diretamente a lucratividade de uma empresa. A sele\u00e7\u00e3o do a\u00e7o ferramenta mais adequado para pun\u00e7\u00f5es e matrizes representa uma decis\u00e3o estrat\u00e9gica crucial para a rela\u00e7\u00e3o custo-benef\u00edcio.<\/p>\n\n\n\n

A extrus\u00e3o a frio, tamb\u00e9m conhecida como forjamento a frio ou extrus\u00e3o por impacto a frio, \u00e9 normalmente realizada a temperaturas abaixo de 200 \u00b0C (390 \u00b0F). O processo geral envolve a coloca\u00e7\u00e3o de uma pe\u00e7a met\u00e1lica bruta em uma cavidade de matriz fixa, onde um pun\u00e7\u00e3o de alta velocidade for\u00e7a o metal a fluir plasticamente, atingindo, por fim, a forma desejada.<\/p>\n\n\n\n

Esse processo imp\u00f5e requisitos extremamente exigentes aos materiais das ferramentas e matrizes. O a\u00e7o da matriz deve suportar tens\u00f5es compressivas extremas, desgaste abrasivo severo e cargas de fadiga din\u00e2mica em um prazo extremamente curto.<\/p>\n\n\n\n

O a\u00e7o de uso geral n\u00e3o atende mais aos requisitos acima; \u00e9 necess\u00e1rio utilizar a\u00e7o para ferramentas e matrizes tratado termicamente. A principal justificativa para a sele\u00e7\u00e3o de a\u00e7o para ferramentas e matrizes \u00e9 equilibrar alta dureza com alta tenacidade.<\/p>\n\n\n\n

As exig\u00eancias cr\u00edticas das ferramentas de extrus\u00e3o a frio<\/h2>\n\n\n\n

As matrizes de extrus\u00e3o a frio enfrentam tr\u00eas desafios principais.<\/p>\n\n\n\n

1. Press\u00e3o extrema e tens\u00e3o compressiva<\/h3>\n\n\n\n

A extrus\u00e3o a frio funciona induzindo o fluxo pl\u00e1stico no metal \u00e0 temperatura ambiente. Para for\u00e7ar o metal atrav\u00e9s de uma cavidade espec\u00edfica da matriz, esta deve suportar uma imensa for\u00e7a contr\u00e1ria. Pun\u00e7\u00f5es e matrizes de alta qualidade devem suportar press\u00f5es m\u00e1ximas que chegam a 2415 MPa (350 ksi). Sob tal press\u00e3o, o a\u00e7o comum se deforma como argila. A resist\u00eancia \u00e0 compress\u00e3o \u00e9 a principal considera\u00e7\u00e3o para o a\u00e7o de ferramentas e matrizes, garantindo que a matriz n\u00e3o sofra deforma\u00e7\u00e3o pl\u00e1stica ou colapso sob press\u00e3o extrema.<\/p>\n\n\n\n

2. Resist\u00eancia ao desgaste<\/h3>\n\n\n\n

Sob alta press\u00e3o, as superf\u00edcies da chapa met\u00e1lica e da matriz sofrem intenso deslizamento relativo, resultando em desgaste abrasivo e adesivo. A resist\u00eancia ao desgaste determina diretamente a vida \u00fatil da matriz e a precis\u00e3o dimensional do produto final. \u00c9 por isso que a\u00e7os-ferramenta com alto teor de carbono e cromo, como os da s\u00e9rie D, s\u00e3o amplamente utilizados nesse setor.<\/p>\n\n\n\n

3. Resist\u00eancia e Fadiga<\/h3>\n\n\n\n

Para suportar alta press\u00e3o e desgaste, precisamos aumentar a dureza; no entanto, dureza excessiva torna o a\u00e7o quebradi\u00e7o. A extrus\u00e3o a frio \u00e9 um processo c\u00edclico din\u00e2mico. Particularmente para pun\u00e7\u00f5es esbeltas com altas rela\u00e7\u00f5es comprimento\/di\u00e2metro, a tenacidade insuficiente sob impactos repetidos as torna altamente suscet\u00edveis \u00e0 fratura por fadiga ou lascamento prematuro.<\/p>\n\n\n\n

Principais categorias de a\u00e7os para ferramentas de extrus\u00e3o a frio<\/h2>\n\n\n\n

Em resumo, os requisitos de sele\u00e7\u00e3o de materiais para processos de extrus\u00e3o a frio s\u00e3o alta dureza, alta resist\u00eancia ao desgaste e tenacidade suficiente.<\/p>\n\n\n\n

1. A\u00e7os r\u00e1pidos (HSS)<\/h3>\n\n\n\n

O a\u00e7o r\u00e1pido n\u00e3o \u00e9 usado apenas para ferramentas de corte; ele tamb\u00e9m se destaca em matrizes de extrus\u00e3o a frio, particularmente pun\u00e7\u00f5es e insertos de matrizes.<\/p>\n\n\n\n

O a\u00e7o r\u00e1pido (HSS) apresenta dureza a quente excepcional, mantendo alta dureza at\u00e9 600 \u00b0C. Durante a extrus\u00e3o em alta velocidade, onde ocorrem altas temperaturas instant\u00e2neas, as arestas de trabalho das matrizes de HSS n\u00e3o amolecem.<\/p>\n\n\n\n

Exemplo: O a\u00e7o M2 \u00e9 a escolha padr\u00e3o para pun\u00e7\u00f5es de extrus\u00e3o a frio. Possui um \u00edndice de resist\u00eancia ao desgaste de 7 e um \u00edndice de tenacidade de 3.<\/p>\n\n\n\n

O a\u00e7o M4 \u00e9 adequado para aplica\u00e7\u00f5es de extrus\u00e3o a frio que exigem maior resist\u00eancia ao desgaste. Possui classifica\u00e7\u00e3o de resist\u00eancia ao desgaste de 9 e classifica\u00e7\u00e3o de tenacidade de 3.<\/p>\n\n\n\n

T15 steel is suitable for cold-extrusion applications that require higher wear resistance. It has a wear resistance rating of 9 and a toughness rating of 1. T15 offers top-tier wear resistance, but this comes at the expense of toughness. It is suitable for precision dies operating under extremely stable conditions with minimal lateral forces but experiencing severe wear.<\/p>\n\n\n\n

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\"A\u00c7O<\/figure>
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A\u00e7o r\u00e1pido M2<\/h4>\n\n\n\n

O a\u00e7o r\u00e1pido M2 \u00e9 um material ideal para pun\u00e7\u00f5es de extrus\u00e3o a frio. Quando tratado termicamente a 62-64 HRC, sua resist\u00eancia \u00e0 compress\u00e3o pode ultrapassar 2068 MPa (300 ksi). Este material apresenta excepcional resist\u00eancia ao desgaste, mantendo efetivamente a precis\u00e3o dimensional durante a produ\u00e7\u00e3o em larga escala, ao mesmo tempo que resiste \u00e0 deforma\u00e7\u00e3o pl\u00e1stica.<\/p>\n\n\n\n

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Saiba mais sobre o M2<\/a><\/div>\n\n\n\n
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2. A\u00e7os para ferramentas de trabalho a frio (s\u00e9ries D e A)<\/h3>\n\n\n\n

Para compradores e engenheiros na \u00e1rea de conforma\u00e7\u00e3o a frio, as escolhas mais comuns geralmente giram em torno de tr\u00eas materiais: AISI D2 (1.2379), AISI A2 (1.2363) e AISI O1 (1.2510).<\/p>\n\n\n\n

O a\u00e7o AISI D2 (1.2379) \u00e9 um a\u00e7o ferramenta para trabalho a frio com alto teor de carbono e cromo, que se destaca por sua excepcional resist\u00eancia ao desgaste e ao amolecimento. Ele atinge a pontua\u00e7\u00e3o 8 em resist\u00eancia ao desgaste e 2 em tenacidade. O D2 \u00e9 a escolha ideal para matrizes de produ\u00e7\u00e3o de alto volume e longa vida \u00fatil. \u00c9 amplamente utilizado em matrizes de extrus\u00e3o a frio, matrizes de estampagem e diversas l\u00e2minas de corte.<\/p>\n\n\n\n

Quando as matrizes D2 apresentam lascamento ou fraturas durante o uso, o a\u00e7o AISI A2 costuma ser a alternativa ideal. Ele obt\u00e9m pontua\u00e7\u00e3o 6 em resist\u00eancia ao desgaste e 5 em tenacidade, oferecendo uma combina\u00e7\u00e3o equilibrada dessas propriedades. O A2 \u00e9 um a\u00e7o vers\u00e1til para conforma\u00e7\u00e3o a frio que mant\u00e9m boa resist\u00eancia ao desgaste e resist\u00eancia superior ao impacto em compara\u00e7\u00e3o com o D2, tornando-o adequado para aplica\u00e7\u00f5es um pouco mais exigentes.<\/p>\n\n\n\n

O a\u00e7o AISI O1, um a\u00e7o ferramenta de baixo custo e temper\u00e1vel em \u00f3leo, permanece no mercado. Ele atinge 4 pontos em resist\u00eancia ao desgaste e 8 em tenacidade. Embora a resist\u00eancia ao desgaste do O1 seja inferior \u00e0 do D2, sua tenacidade \u00e9 excepcional. Se suas matrizes falham principalmente por fratura em vez de desgaste, ou se voc\u00ea precisa de um material ferramenta de baixo custo, o O1 oferece uma op\u00e7\u00e3o altamente econ\u00f4mica.<\/p>\n\n\n\n

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\"A\u00e7o<\/figure>
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A\u00e7o ferramenta para trabalho a frio D2 | 1.2379 | SKD11<\/h4>\n\n\n\n

O a\u00e7o ferramenta para trabalho a frio D2 combina alta resist\u00eancia ao desgaste com excepcional resist\u00eancia \u00e0 compress\u00e3o, tornando-o a escolha ideal para insertos de matrizes de extrus\u00e3o. Este material oferece uma dureza de 60-62 HRC e excelente temperabilidade profunda; suas propriedades de endurecimento ao ar controlam eficazmente a distor\u00e7\u00e3o por tratamento t\u00e9rmico, garantindo que a matriz mantenha precis\u00e3o dimensional est\u00e1vel e toler\u00e2ncias de precis\u00e3o ao longo de ciclos de produ\u00e7\u00e3o prolongados e de alto desgaste.<\/p>\n\n\n\n

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Saiba mais sobre D2<\/a><\/div>\n\n\n\n
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\"A\u00e7o<\/figure>
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A\u00e7o ferramenta para trabalho a frio A2 | 1.2363 | SKD12<\/h4>\n\n\n\n

O a\u00e7o ferramenta A2, de t\u00eampera ao ar, combina alta tenacidade com resist\u00eancia ao desgaste, tornando-o uma escolha ideal para pun\u00e7\u00f5es e matrizes de extrus\u00e3o. Sua dureza ap\u00f3s t\u00eampera varia tipicamente de 56 a 58 HRC, com alta temperabilidade e distor\u00e7\u00e3o extremamente baixa. Quando o a\u00e7o D2 apresenta fratura fr\u00e1gil, o A2 \u00e9 uma excelente alternativa: ele suporta tens\u00f5es compressivas extremamente altas, ao mesmo tempo que previne eficazmente o lascamento sob cargas de impacto elevadas.<\/p>\n\n\n\n

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Saiba mais sobre A2<\/a><\/div>\n\n\n\n
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\"a\u00e7o<\/figure>
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A\u00e7o ferramenta para trabalho a frio O1 | 1.2510 | SKS3<\/h4>\n\n\n\n

O a\u00e7o ferramenta O1, endurec\u00edvel em \u00f3leo, oferece uma solu\u00e7\u00e3o econ\u00f4mica para matrizes de extrus\u00e3o a frio de pequenos lotes. Com uma dureza de 58-62 HRC, ele equilibra resist\u00eancia ao desgaste e tenacidade, tornando-o amplamente utilizado na fabrica\u00e7\u00e3o de recipientes por estampagem e matriz.<\/p>\n\n\n\n

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Saiba mais sobre o O1<\/a><\/div>\n\n\n\n
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3. A\u00e7os para trabalho a quente (S\u00e9rie H)<\/h3>\n\n\n\n

Em aplica\u00e7\u00f5es de extrus\u00e3o a frio, a dureza \u00e9 crucial, mas n\u00e3o o \u00fanico fator. Quando as matrizes enfrentam ambientes de tens\u00e3o extremamente complexos ou extrudam a\u00e7os de alta resist\u00eancia, uma dureza excessivamente alta pode causar fratura fr\u00e1gil instant\u00e2nea. Nesses casos, \u00e9 necess\u00e1ria uma estrat\u00e9gia diferente de sele\u00e7\u00e3o de materiais. Para obter a resist\u00eancia \u00e0 fratura necess\u00e1ria, sacrificando um pouco da resist\u00eancia \u00e0 compress\u00e3o, recomendamos fortemente o uso de a\u00e7os H11 ou H13. Esses a\u00e7os absorvem a energia do impacto como molas, em vez de se estilha\u00e7arem como vidro. A\u00e7os para ferramentas de trabalho a quente com m\u00e9dio teor de carbono, como o H11\/H13, atingem uma classifica\u00e7\u00e3o de tenacidade de 9.<\/p>\n\n\n\n

O H11\/H13 tamb\u00e9m serve a outro prop\u00f3sito. Para evitar a quebra de insertos caros de metal duro ou a\u00e7o ferramenta de alta dureza dentro da matriz, um ou mais "an\u00e9is de contra\u00e7\u00e3o" feitos de H11 ou H13 (1.2344) podem ser encaixados ao redor da parte externa dos insertos. Essa configura\u00e7\u00e3o \u00e9 denominada matriz composta pr\u00e9-tensionada. Aproveitando a expans\u00e3o e contra\u00e7\u00e3o t\u00e9rmica, os an\u00e9is de H11\/H13 s\u00e3o aquecidos e encaixados sobre o inserto. Ao resfriar, isso cria uma pr\u00e9-tens\u00e3o interna significativa. Essa for\u00e7a neutraliza a tens\u00e3o de tra\u00e7\u00e3o externa durante a extrus\u00e3o a frio, evitando rachaduras no inserto. Para essa aplica\u00e7\u00e3o, o H11\/H13 n\u00e3o requer dureza extremamente alta; o tratamento t\u00e9rmico para 46-48 HRC geralmente \u00e9 suficiente. Essa faixa de dureza garante excelente tenacidade e estabilidade estrutural.<\/p>\n\n\n\n

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\"A\u00e7o<\/figure>
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A\u00e7o para ferramentas H11 | 1.2343 | SKD6<\/h4>\n\n\n\n

O a\u00e7o cromo H11 para trabalho a quente \u00e9 um material complementar essencial para matrizes de extrus\u00e3o a frio, cuja alta tenacidade previne eficazmente a fratura fr\u00e1gil repentina da matriz. Este a\u00e7o \u00e9 comumente utilizado na fabrica\u00e7\u00e3o de an\u00e9is de contra\u00e7\u00e3o e estruturas de matrizes com dureza de 46 a 52 HRC. Sua alta ductilidade permite suportar imensas press\u00f5es de ruptura. Em componentes de alta tens\u00e3o que exigem resist\u00eancia superior ao impacto, o H11 garante a integridade estrutural geral das ferramentas, superando a fragilidade inerente a materiais de alta dureza.<\/p>\n\n\n\n

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\"A\u00c7O<\/figure>
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A\u00e7o para ferramentas H13 | 1.2344 | SKD61<\/h4>\n\n\n\n

O a\u00e7o ferramenta H13 oferece alta tenacidade e ductilidade, tornando-o um material ideal para a fabrica\u00e7\u00e3o de an\u00e9is de contra\u00e7\u00e3o e alojamentos. Quando tratado termicamente a 44-48 HRC, este material suprime eficazmente a propaga\u00e7\u00e3o de trincas sob altas cargas de impacto. O H13 apresenta excelente temperabilidade profunda e mant\u00e9m toler\u00e2ncias dimensionais precisas por longos per\u00edodos sob tens\u00f5es de ruptura extremamente elevadas.<\/p>\n\n\n\n

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Saiba mais sobre H13<\/a><\/div>\n\n\n\n
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 Tratamento t\u00e9rmico e melhoria de superf\u00edcie<\/h2>\n\n\n\n

Our customers have encountered this situation: dies pass hardness tests during factory inspection, yet suddenly crack shortly after machine operation begins. This is most likely due to retained austenite. During quenching, if the austenite in the steel is not fully transformed into martensite, the remaining portion is called retained austenite. This phase is unstable and spontaneously transforms into brittle martensite during die service, especially under high stress or high-speed impact. This transformation involves volume expansion, generating immense internal stresses within the die that ultimately lead to fatigue fracture.<\/p>\n\n\n\n

Para aplica\u00e7\u00f5es de alta tens\u00e3o, como matrizes de extrus\u00e3o a frio, nunca realize apenas um ou dois ciclos de revenido para economizar custos. A pr\u00e1tica padr\u00e3o da ind\u00fastria \u00e9 o revenido triplo. Isso garante que a maior parte da austenita retida seja transformada com sucesso, eliminando a instabilidade interna na matriz.<\/p>\n\n\n\n

Uma vez que o material base atinja resist\u00eancia e tenacidade suficientes, tamb\u00e9m devemos aplicar uma camada protetora \u00e0 matriz para suportar o desgaste extremo. A nitreta\u00e7\u00e3o \u00e9 o m\u00e9todo de endurecimento superficial mais comum. Atrav\u00e9s deste processo, forma-se uma camada composta extremamente dura na superf\u00edcie da matriz, aumentando ainda mais sua resist\u00eancia ao desgaste.<\/p>\n\n\n\n

Componente da ferramenta<\/td>Classes de a\u00e7o recomendadas (exemplos de sele\u00e7\u00e3o)<\/td>Dureza de Trabalho (HRC)<\/td>\u00canfase principal na propriedade<\/td>Componentes de suporte<\/td><\/tr>
Pun\u00e7\u00f5es<\/td>T15, M4, D4, M2<\/td>60\u201366<\/td>Alta resist\u00eancia \u00e0 compress\u00e3o\/resist\u00eancia ao desgaste<\/td>Haste do pun\u00e7\u00e3o: A2, O1, S7 (56\u201358 HRC)<\/td><\/tr>
Inser\u00e7\u00f5es de matriz<\/td>T15, M4, D4, M2, D2, Carboneto<\/td>58\u201366+<\/td>Alta dureza\/resist\u00eancia ao desgaste<\/td>An\u00e9is porta-matriz\/retentores: H11, H13 (46\u201348 HRC)<\/td><\/tr>
Extrus\u00e3o extremamente dif\u00edcil<\/td>H11\/H13 ou carboneto de tungst\u00eanio<\/td>46\u201362+<\/td>Resist\u00eancia para evitar rachaduras<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Perguntas frequentes<\/h2>\n\n\n\n
Quais propriedades s\u00e3o necess\u00e1rias para os a\u00e7os de matrizes de extrus\u00e3o a frio?<\/strong>

O a\u00e7o para ferramentas e matrizes deve equilibrar alta dureza com alta tenacidade para suportar tens\u00f5es compressivas extremas e cargas de fadiga din\u00e2mica. Tamb\u00e9m requer alta resist\u00eancia ao desgaste para suportar o severo desgaste abrasivo durante o processo.<\/p> <\/div>

Qual o melhor a\u00e7o para pun\u00e7\u00f5es de extrus\u00e3o a frio?<\/strong>

O a\u00e7o r\u00e1pido M2 \u00e9 a escolha padr\u00e3o para pun\u00e7\u00f5es, oferecendo um equil\u00edbrio entre resist\u00eancia ao desgaste e tenacidade. Quando tratado termicamente a 62-64 HRC, o M2 proporciona uma resist\u00eancia \u00e0 compress\u00e3o excepcional de 2068 MPa ou mais.<\/p> <\/div>

Quando devo escolher a\u00e7o A2 em vez de D2 para matrizes?<\/strong>

Selecione o a\u00e7o AISI A2 (1.2363) quando as matrizes D2 apresentarem lascamento ou fratura fr\u00e1gil durante o uso. O A2 oferece resist\u00eancia superior ao impacto e tenacidade em compara\u00e7\u00e3o com o D2, mantendo ao mesmo tempo boa resist\u00eancia ao desgaste para conforma\u00e7\u00e3o a frio.<\/p> <\/div>

Qual o tipo de a\u00e7o utilizado para an\u00e9is de contra\u00e7\u00e3o em matrizes?<\/strong>

Para an\u00e9is de contra\u00e7\u00e3o, recomenda-se o uso de a\u00e7os para trabalho a quente H11 ou H13, a fim de evitar trincas no inserto. Esses materiais absorvem a energia do impacto como molas e criam uma pr\u00e9-tens\u00e3o interna para contrabalan\u00e7ar a tens\u00e3o de tra\u00e7\u00e3o durante a extrus\u00e3o.<\/p> <\/div>

Por que a resist\u00eancia \u00e0 compress\u00e3o \u00e9 importante para matrizes de extrus\u00e3o a frio?<\/strong>

A resist\u00eancia \u00e0 compress\u00e3o \u00e9 a principal considera\u00e7\u00e3o, j\u00e1 que as matrizes devem suportar press\u00f5es m\u00e1ximas de 2415 MPa (350 ksi). Uma alta resist\u00eancia \u00e0 compress\u00e3o garante que a matriz n\u00e3o sofra deforma\u00e7\u00e3o pl\u00e1stica ou colapso sob essa imensa for\u00e7a contr\u00e1ria.<\/p> <\/div>

Quantos ciclos de t\u00eampera s\u00e3o necess\u00e1rios para matrizes de extrus\u00e3o?<\/strong>

As normas da ind\u00fastria recomendam o revenimento triplo para aplica\u00e7\u00f5es de alta tens\u00e3o, como a extrus\u00e3o a frio. Isso garante que a austenita retida seja totalmente transformada, eliminando a instabilidade interna que causa fratura por fadiga.<\/p> <\/div>

Qual \u00e9 um bom a\u00e7o ferramenta de baixo custo para extrus\u00e3o a frio?<\/strong>

O a\u00e7o AISI O1 \u00e9 um a\u00e7o de t\u00eampera em \u00f3leo com boa rela\u00e7\u00e3o custo-benef\u00edcio, ideal para matrizes de pequenos lotes ou aplica\u00e7\u00f5es que exigem alta tenacidade. Embora sua resist\u00eancia ao desgaste seja menor que a do D2, o O1 \u00e9 excelente se as matrizes falharem principalmente por fratura.<\/p> <\/div> <\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

In modern manufacturing, cold extrusion is a core process for mass-producing precision components across the automotive, aerospace, and industrial machinery sectors. The service life of cold extrusion dies often directly determines a company’s profitability. Selecting the most suitable tool steel for punches and dies represents a strategic decision critical to cost-effectiveness. Cold extrusion, also known […]<\/p>\n","protected":false},"author":1,"featured_media":4355,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","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":""},"class_list":["post-9555","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nCold Extrusion Die Steel Selection Guide | D2, A2, H13, M2 Explained<\/title>\n<meta name=\"description\" content=\"A practical guide for selecting tool steel in cold extrusion applications. 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This ensures retained austenite is fully transformed, eliminating internal instability that causes fatigue fracture.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632225794","position":7,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632225794","name":"Qual \u00e9 um bom a\u00e7o ferramenta de baixo custo para extrus\u00e3o a frio?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"AISI O1 is a cost-effective oil-hardening steel ideal for small-batch dies or applications requiring high toughness. 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