{"id":20138,"date":"2026-09-28T07:50:04","date_gmt":"2026-09-27T23:50:04","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20138"},"modified":"2026-10-16T00:11:53","modified_gmt":"2026-10-15T16:11:53","slug":"m1-tool-steel-heat-treatment","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/m1-tool-steel-heat-treatment\/","title":{"rendered":"Tratamento t\u00e9rmico do a\u00e7o ferramenta M1"},"content":{"rendered":"

Tratamento t\u00e9rmico do a\u00e7o ferramenta M1<\/h1>\n\n\n\n

A composi\u00e7\u00e3o qu\u00edmica, o ciclo de t\u00eampera e a linha de revenimento que a ficha t\u00e9cnica apresenta para o a\u00e7o r\u00e1pido ao molibd\u00eanio M1. Um resumo de refer\u00eancia da pr\u00e1tica publicada e n\u00e3o uma especifica\u00e7\u00e3o da Aobo Steel.<\/p>\n\n\n\n

M1 no grupo dos a\u00e7os r\u00e1pidos ao molibd\u00eanio<\/h2>\n\n\n\n

M1 \u00e9 o grau ao molibd\u00eanio da fam\u00edlia dos a\u00e7os r\u00e1pidos. A ficha apresenta 8,50% de molibd\u00eanio contra 1,50% de tungst\u00eanio, portanto a liga \u00e9 constru\u00edda em torno do molibd\u00eanio e n\u00e3o do tungst\u00eanio, e esse equil\u00edbrio \u00e9 o que o separa dos graus ao tungst\u00eanio do mesmo grupo. Cromo a 4,00%, van\u00e1dio a 1,00% e carbono a 0,85% s\u00e3o os outros valores que a ficha apresenta, e s\u00e3o esses os elementos a partir dos quais os carbonetos s\u00e3o formados. O grau \u00e9 utilizado onde a oficina trabalha com um ciclo de a\u00e7o r\u00e1pido ao molibd\u00eanio j\u00e1 qualificado, em vez do ciclo de um grau diferente.<\/p>\n\n\n\n

A ficha \u00e9 informa\u00e7\u00e3o de refer\u00eancia para a oficina e n\u00e3o uma especifica\u00e7\u00e3o. Apresenta uma etapa de pr\u00e9-aquecimento, uma temperatura de t\u00eampera e dois meios de resfriamento, depois um bloco de revenimento que come\u00e7a na dureza logo ap\u00f3s a t\u00eampera e vai at\u00e9 1200 \u00b0F (650 \u00b0C). Cada valor \u00e9 um valor \u00fanico e nenhuma faixa de toler\u00e2ncia aparece em qualquer parte da ficha. Vale a pena tratar um primeiro lote de pe\u00e7as de um novo vazamento de a\u00e7o como um teste antes que o ciclo entre em produ\u00e7\u00e3o.<\/p>\n\n\n\n

Composi\u00e7\u00e3o qu\u00edmica do M1<\/h2>\n\n\n\n

Elementos listados na ficha de refer\u00eancia, percentual<\/h3>\n\n\n\n
Elemento<\/th>Percentual<\/th><\/tr><\/thead>
Carbono<\/td>0.85<\/td><\/tr>
Manganese<\/td>0.30<\/td><\/tr>
Silicon<\/td>0.30<\/td><\/tr>
Cromo<\/td>4.00<\/td><\/tr>
Molibd\u00eanio<\/td>8.50<\/td><\/tr>
Van\u00e1dio<\/td>1.00<\/td><\/tr>
Tungst\u00eanio<\/td>1.50<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte, informa\u00e7\u00e3o de refer\u00eancia de tratamento t\u00e9rmico para M1, p\u00e1gina impressa 189.<\/em><\/p>\n\n\n\n

A ficha apresenta um valor para cada elemento em vez de uma faixa de especifica\u00e7\u00e3o. Cobalto e enxofre est\u00e3o listados na ficha sem valor correspondente, portanto essas linhas s\u00e3o omitidas da tabela em vez de serem impressas em branco.<\/em><\/p>\n\n\n\n

O molibd\u00eanio a 8,50% \u00e9 o elemento em torno do qual o grau \u00e9 organizado, e representa mais de cinco vezes o valor de tungst\u00eanio de 1,50%, o que faz deste um a\u00e7o r\u00e1pido ao molibd\u00eanio no sentido estrito do termo. O carbono a 0,85% \u00e9 o elemento a partir do qual os carbonetos s\u00e3o formados, o cromo a 4,00% confere a temperabilidade da qual depende a temperatura de t\u00eampera abaixo, e o van\u00e1dio a 1,00% \u00e9 o formador de carbonetos que tamb\u00e9m mant\u00e9m o tamanho de gr\u00e3o durante a manuten\u00e7\u00e3o de austenitiza\u00e7\u00e3o. Mangan\u00eas e sil\u00edcio s\u00e3o apresentados a 0,30% cada como valores \u00fanicos. Cobalto e enxofre est\u00e3o listados na ficha sem valor correspondente, portanto essas linhas s\u00e3o omitidas da tabela. Os dados de composi\u00e7\u00e3o na tabela s\u00e3o apenas para refer\u00eancia geral, os valores reais variam por norma, usina e n\u00famero de vazamento, portanto confirme os valores com o certificado de ensaio do material do vazamento ou consulte a Aobo Steel.<\/p>\n\n\n\n

T\u00eampera do M1<\/h2>\n\n\n\n

Pr\u00e9-aquecimento, temperatura de t\u00eampera e resfriamento<\/h3>\n\n\n\n
Etapa<\/th>M1<\/th><\/tr><\/thead>
Pr\u00e9-aquecimento<\/td>1500 \u00b0F (815 \u00b0C)<\/td><\/tr>
Temperar<\/td>2200 \u00b0F (1205 \u00b0C)<\/td><\/tr>
Meio de t\u00eampera<\/td>T\u00eampera em \u00f3leo ou sal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte, informa\u00e7\u00e3o de refer\u00eancia de tratamento t\u00e9rmico para M1, p\u00e1gina impressa 189.<\/em><\/p>\n\n\n\n

A ficha apresenta uma etapa de pr\u00e9-aquecimento, uma temperatura de t\u00eampera e dois meios de resfriamento para o grau, sem condi\u00e7\u00e3o de dimens\u00e3o de se\u00e7\u00e3o para nenhum deles, portanto os valores se aplicam \u00e0 carga conforme apresentado.<\/em><\/p>\n\n\n\n

O pr\u00e9-aquecimento de 1500 \u00b0F (815 \u00b0C) eleva a carga antes da temperatura de austenitiza\u00e7\u00e3o, e a ficha n\u00e3o apresenta nenhuma condi\u00e7\u00e3o para ele, portanto a etapa se aplica a toda carga. A t\u00eampera ocorre a 2200 \u00b0F (1205 \u00b0C) com resfriamento em \u00f3leo ou em sal. Ambos os meios s\u00e3o apresentados sem dimens\u00e3o de se\u00e7\u00e3o ou forma para nenhum deles, portanto a escolha entre eles fica a crit\u00e9rio da oficina e n\u00e3o \u00e9 definida pela ficha. Uma temperatura de t\u00eampera \u00e9 apresentada, portanto uma oficina que utilize uma janela de austenitiza\u00e7\u00e3o diferente est\u00e1 trabalhando fora do que a ficha fornece, e um a\u00e7o r\u00e1pido tratado nessa temperatura \u00e9 normalmente mantido e temperado em uma \u00fanica etapa ininterrupta em vez de resfriado no forno.<\/p>\n\n\n\n

Resposta ao revenimento do M1<\/h2>\n\n\n\n

Dureza deixada por cada temperatura de revenimento<\/h3>\n\n\n\n
Revenimento, \u00b0F<\/th>\u00b0C<\/th>M1, HRC<\/th><\/tr><\/thead>
Ap\u00f3s a t\u00eampera<\/td>\u2013<\/td>65<\/td><\/tr>
900<\/td>480<\/td>64<\/td><\/tr>
950<\/td>510<\/td>66<\/td><\/tr>
1000<\/td>540<\/td>67<\/td><\/tr>
1050<\/td>565<\/td>66<\/td><\/tr>
1100<\/td>595<\/td>65<\/td><\/tr>
1150<\/td>620<\/td>63<\/td><\/tr>
1200<\/td>650<\/td>58<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte, informa\u00e7\u00e3o de refer\u00eancia de tratamento t\u00e9rmico para M1, p\u00e1gina impressa 189.<\/em><\/p>\n\n\n\n

A ficha apresenta a dureza logo ap\u00f3s a t\u00eampera dentro do bloco de revenimento sem temperatura correspondente, portanto essa linha leva um tra\u00e7o na coluna de temperatura. O revenimento vai de 900 \u00b0F a 1200 \u00b0F em passos de 50 \u00b0F com um valor Rockwell C em cada linha.<\/em><\/p>\n\n\n\n

O bloco de revenimento come\u00e7a na dureza logo ap\u00f3s a t\u00eampera a 65 HRC e depois eleva a linha em vez de baix\u00e1-la, o que \u00e9 a resposta de endurecimento secund\u00e1rio de um a\u00e7o r\u00e1pido ao molibd\u00eanio. O primeiro passo a 900 \u00b0F (480 \u00b0C) reduz o valor para 64 HRC, o pico ocorre a 1000 \u00b0F (540 \u00b0C) com 67 HRC, e a linha mant\u00e9m 66 HRC um passo depois a 1050 \u00b0F (565 \u00b0C). Acima disso cai, para 65 HRC a 1100 \u00b0F, 63 HRC a 1150 \u00b0F (620 \u00b0C) e 58 HRC a 1200 \u00b0F (650 \u00b0C). Uma dureza de trabalho obtida entre 1000 \u00b0F e 1050 \u00b0F mant\u00e9m o grau em seu pico de 66 a 67 HRC, e as linhas mais quentes trocam essa dureza por al\u00edvio de tens\u00f5es e pela resist\u00eancia ao calor vermelho pela qual o grau \u00e9 escolhido. A ficha apresenta um valor em cada linha e n\u00e3o diz nada sobre o n\u00famero de ciclos de revenimento, portanto trate a linha como a resposta do grau e defina os ciclos com seu tratador t\u00e9rmico antes que as pe\u00e7as entrem em servi\u00e7o.<\/p>\n\n\n\n

\n

Tratamento t\u00e9rmico do a\u00e7o ferramenta M1, PDF para impress\u00e3o<\/strong><\/p>\n\n

A composi\u00e7\u00e3o qu\u00edmica, o ciclo de t\u00eampera e a resposta ao revenimento do M1 desta p\u00e1gina em um PDF, com nossos dados de contato.<\/p>\n\n

\n
Baixar PDF, 373 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n

Dados de refer\u00eancia relacionados<\/h2>\n\n\n\n

Os graus ao molibd\u00eanio vizinhos est\u00e3o na p\u00e1gina de tratamento t\u00e9rmico do a\u00e7o ferramenta M2<\/a>, a p\u00e1gina de tratamento t\u00e9rmico do a\u00e7o ferramenta M4<\/a> e o p\u00e1gina de tratamento t\u00e9rmico do a\u00e7o ferramenta M7<\/a>, e o grau ao cobalto da mesma fam\u00edlia est\u00e1 na p\u00e1gina do a\u00e7o ferramenta M42<\/a>. Onde os graus s\u00e3o utilizados em ferramentas de corte \u00e9 detalhado na p\u00e1gina de a\u00e7o r\u00e1pido para ferramentas de corte, fresas-m\u00e3e e brochas<\/a> e no guia de sele\u00e7\u00e3o de a\u00e7o r\u00e1pido para ferramentas de corte<\/a>. As faixas de revenimento para todos os grupos de a\u00e7os ferramenta est\u00e3o na Tabela de revenimento de a\u00e7o para ferramentas<\/a>, composi\u00e7\u00e3o qu\u00edmica de cada grau na Tabela de composi\u00e7\u00e3o de a\u00e7os para ferramentas<\/a>, e dureza mantida em temperatura na tabela de dureza a quente do a\u00e7o ferramenta<\/a>.<\/p>\n\n\n\n

Dados de refer\u00eancia compilados de Heat Treatment, Selection, and Application of Tool Steels (William E. Bryson, segunda edi\u00e7\u00e3o, Hanser). A composi\u00e7\u00e3o qu\u00edmica, o ciclo de t\u00eampera e a resposta ao revenimento do M1 v\u00eam das informa\u00e7\u00f5es de refer\u00eancia de tratamento t\u00e9rmico na p\u00e1gina impressa 189.<\/p>","protected":false},"excerpt":{"rendered":"

M1 Tool Steel Heat Treatment The chemistry, the hardening cycle and the tempering line the source card prints for M1 molybdenum high speed steel. A reference summary of published practice and not an Aobo Steel specification. M1 in the molybdenum high speed group M1 is the molybdenum grade of the high speed family. The card […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"normal-width-container","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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Chart<\/title>\n<meta name=\"description\" content=\"Hardening temperature, oil or salt quench and the tempering response of M1 molybdenum high speed steel, with its chemistry and the hardness left on each temper row.\" \/>\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\/m1-tool-steel-heat-treatment\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M1 Tool Steel Heat Treatment\" \/>\n<meta property=\"og:description\" content=\"Hardening temperature, oil or salt quench and the tempering response of M1 molybdenum high speed steel, with its chemistry and the hardness left on each temper row.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/pt\/m1-tool-steel-heat-treatment\/\" \/>\n<meta property=\"og:site_name\" content=\"AoboSteel\" \/>\n<meta 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