{"id":20493,"date":"2026-10-01T16:08:13","date_gmt":"2026-10-01T08:08:13","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20493"},"modified":"2026-10-16T00:47:15","modified_gmt":"2026-10-15T16:47:15","slug":"l6-tool-steel-tensile-properties","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/l6-tool-steel-tensile-properties\/","title":{"rendered":"Propriedades de tra\u00e7\u00e3o do a\u00e7o ferramenta L6 ap\u00f3s revenimento"},"content":{"rendered":"

Propriedades de tra\u00e7\u00e3o do a\u00e7o ferramenta L6 ap\u00f3s revenimento<\/h1>\n\n\n\n

O L6 \u00e9 o a\u00e7o ferramenta de baixa liga que as oficinas escolhem quando a matriz precisa absorver impacto em vez de resistir \u00e0 abras\u00e3o, e os n\u00fameros que descrevem esse comportamento s\u00e3o a resist\u00eancia \u00e0 tra\u00e7\u00e3o, o alongamento e a redu\u00e7\u00e3o de \u00e1rea medidos em corpos de prova revenidos. As tabelas abaixo re\u00fanem uma corrida de L6 submetida a cinco temperaturas de revenimento e uma compara\u00e7\u00e3o do mesmo grau L2 com e sem van\u00e1dio, ambas extra\u00eddas da pr\u00e1tica publicada. Cada valor pertence \u00e0 condi\u00e7\u00e3o exata de t\u00eampera e revenimento impressa ao lado, portanto leia cada linha como o comportamento medido naquela condi\u00e7\u00e3o espec\u00edfica e n\u00e3o como um valor de projeto. Este \u00e9 um resumo de refer\u00eancia da pr\u00e1tica publicada e n\u00e3o uma especifica\u00e7\u00e3o nossa.<\/p>\n\n\n\n

O que as tabelas medem<\/h2>\n\n\n\n

A primeira tabela acompanha um a\u00e7o ferramenta L6 desde uma condi\u00e7\u00e3o dura e fr\u00e1gil ap\u00f3s um revenimento baixo at\u00e9 uma condi\u00e7\u00e3o mais macia e muito mais d\u00factil ap\u00f3s um revenimento alto. O a\u00e7o foi austenitizado a 815 °C (1500 °F), temperado em \u00f3leo e revenido por 2 h, e nada muda entre as cinco linhas exceto a temperatura de revenimento, de modo que as colunas mostram exatamente o que uma oficina paga em dureza por cada ponto de ductilidade que recupera. Os valores s\u00e3o da Allegheny Ludlum Steel Corp.<\/p>\n\n\n\n

A segunda tabela responde \u00e0 quest\u00e3o vizinha de qual \u00e9 o efeito do van\u00e1dio nessa fam\u00edlia de a\u00e7os. Duas corridas de L2 com o mesmo teor de carbono e praticamente o mesmo cromo s\u00e3o comparadas ap\u00f3s o mesmo tratamento, um com 0,20 por cento de van\u00e1dio e outro sem, de modo que a diferen\u00e7a entre as duas colunas se aproxima do efeito dessa \u00fanica adi\u00e7\u00e3o.<\/p>\n\n\n\n

Propriedades de tra\u00e7\u00e3o do a\u00e7o ferramenta L6 ap\u00f3s revenimento<\/h2>\n\n\n\n

Austenitizado a 815 °C (1500 °F), temperado em \u00f3leo e revenido por 2 h<\/h3>\n\n\n\n
Temperatura de revenimento, °C<\/th>Temperatura de revenimento, °F<\/th>Resist\u00eancia \u00e0 tra\u00e7\u00e3o, MPa<\/th>Resist\u00eancia \u00e0 tra\u00e7\u00e3o, ksi<\/th>Alongamento em 50 mm (2 pol.), %<\/th>Redu\u00e7\u00e3o de \u00e1rea, %<\/th>Dureza, HRC<\/th><\/tr><\/thead>
205<\/td>400<\/td>2055<\/td>298<\/td>1.3<\/td>2.0<\/td>57<\/td><\/tr>
315<\/td>600<\/td>2004.72<\/td>290.75<\/td>4.3<\/td>9.3<\/td>53.5<\/td><\/tr>
425<\/td>800<\/td>1591.02<\/td>230.75<\/td>8.5<\/td>24.7<\/td>47<\/td><\/tr>
540<\/td>1000<\/td>1341.97<\/td>194.63<\/td>12.5<\/td>34.0<\/td>42<\/td><\/tr>
650<\/td>1200<\/td>966.2<\/td>140.13<\/td>18.8<\/td>47.2<\/td>32<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte, Tool Steels (G. A. Roberts e G. Krauss), Tabela 8-10, Propriedades de tra\u00e7\u00e3o do a\u00e7o ferramenta L6, p\u00e1gina impressa 158 da c\u00f3pia consultada. Composi\u00e7\u00e3o 0,68% C, 0,60% Mn, 0,65% Cr, 1,40% Ni, 0,20% Mo; temperatura de austenitiza\u00e7\u00e3o 815 °C (1500 °F), temperado em \u00f3leo, revenido por 2 h. Valores da Allegheny Ludlum Steel Corp. A fonte imprime as duas colunas de temperatura com seus t\u00edtulos trocados, e o pareamento usado aqui segue as temperaturas equivalentes no eixo da Fig. 8-24 na mesma p\u00e1gina. Este \u00e9 um resumo de refer\u00eancia da pr\u00e1tica publicada e n\u00e3o uma especifica\u00e7\u00e3o da Aobo Steel.<\/em><\/p>\n\n\n\n

A temperatura de revenimento mais baixa da tabela alivia a tens\u00e3o de t\u00eampera em vez de amaciar o a\u00e7o, e deixa 57 HRC com 1,3 por cento de alongamento e 2,0 por cento de redu\u00e7\u00e3o de \u00e1rea, o que \u00e9 uma pe\u00e7a praticamente sem reserva antes de trincar. A partir da\u00ed a dureza cai em quatro etapas adicionais at\u00e9 32 HRC a 650 °C, enquanto a redu\u00e7\u00e3o de \u00e1rea sobe de 2,0 para 47,2 por cento e o alongamento de 1,3 para 18,8 por cento. A resist\u00eancia acompanha a dureza na queda, de 2055 MPa no revenimento mais baixo a 966,2 MPa no mais alto.<\/p>\n\n\n\n

Duas das etapas merecem destaque. Entre 205 e 315 °C o a\u00e7o perde cerca de 50 MPa de resist\u00eancia \u00e0 tra\u00e7\u00e3o e 3,5 HRC enquanto a redu\u00e7\u00e3o de \u00e1rea sobe 7,3 pontos, de modo que a primeira parte da faixa de revenimento compra ductilidade a baixo custo. A \u00faltima etapa, de 540 a 650 °C, custa 10 HRC e 376 MPa e devolve 13,2 pontos de redu\u00e7\u00e3o de \u00e1rea, que \u00e9 o ponto em que o a\u00e7o deixa de se comportar como fio de corte e passa a se comportar como material de matriz resistente a impacto. As duas faixas de trabalho que a fonte indica para o grau, 45 a 50 HRC para serras de corte de madeira e 58 a 62 HRC para a maioria das outras aplica\u00e7\u00f5es, situam-se nos dois extremos desta tabela, de modo que a tabela precifica a escolha entre um fio duro e uma matriz que sobrevive ao impacto.<\/p>\n\n\n\n

A\u00e7o ferramenta L2 com e sem van\u00e1dio<\/h2>\n\n\n\n
Propriedade<\/th>A\u00e7o A, L2 sem van\u00e1dio<\/th>A\u00e7o B, L2 com van\u00e1dio<\/th><\/tr><\/thead>
Resist\u00eancia \u00e0 tra\u00e7\u00e3o, MPa (ksi)<\/td>1523 (220.9)<\/td>1605 (232.8)<\/td><\/tr>
Limite de escoamento, MPa (ksi)<\/td>1384 (200.7)<\/td>1546 (224.2)<\/td><\/tr>
Rela\u00e7\u00e3o escoamento\/tra\u00e7\u00e3o<\/td>0.911<\/td>0.963<\/td><\/tr>
Alongamento, %<\/td>9.6<\/td>10.4<\/td><\/tr>
Redu\u00e7\u00e3o de \u00e1rea, %<\/td>35.9<\/td>43.1<\/td><\/tr>
Dureza, HV<\/td>457<\/td>481<\/td><\/tr>
Impacto Izod, J (ft·lbf)<\/td>16.3 (12.0)<\/td>16.3 (12.0)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte, Tool Steels (G. A. Roberts e G. Krauss), Tabela 8-7, Propriedades mec\u00e2nicas de a\u00e7os L2 de m\u00e9dio carbono com e sem van\u00e1dio, p\u00e1gina impressa 148 da c\u00f3pia consultada. Ambos os a\u00e7os temperados em \u00f3leo a partir de 840 °C (1545 °F) e revenidos a 425 °C (800 °F). Composi\u00e7\u00e3o do a\u00e7o A: 0,49% C, 0,76% Mn, 0,21% Si, 1,07% Cr. Composi\u00e7\u00e3o do a\u00e7o B: 0,50% C, 0,79% Mn, 0,31% Si, 0,98% Cr, 0,20% V. O valor de impacto \u00e9 um valor Izod em joules com o valor em foot pound entre par\u00eanteses. Este \u00e9 um resumo de refer\u00eancia da pr\u00e1tica publicada e n\u00e3o uma especifica\u00e7\u00e3o da Aobo Steel.<\/em><\/p>\n\n\n\n

A adi\u00e7\u00e3o de 0,20 por cento de van\u00e1dio eleva a resist\u00eancia \u00e0 tra\u00e7\u00e3o em 82 MPa e o limite de escoamento em 162 MPa no mesmo tratamento, raz\u00e3o pela qual a rela\u00e7\u00e3o escoamento\/tra\u00e7\u00e3o passa de 0,911 para 0,963, e melhora ligeiramente a ductilidade em vez de reduzi-la, com o alongamento subindo de 9,6 para 10,4 por cento e a redu\u00e7\u00e3o de \u00e1rea de 35,9 para 43,1 por cento. A dureza sobe de 457 para 481 HV e o impacto Izod medido \u00e9 o mesmo 16,3 J (12,0 ft·lbf) para ambas as corridas, de modo que o ganho est\u00e1 na resist\u00eancia e n\u00e3o na tenacidade.<\/p>\n\n\n\n

Lendo as duas tabelas em conjunto, a fam\u00edlia se comporta de forma consistente. O L6 e o L2 s\u00e3o ambos a\u00e7os de baixa liga escolhidos onde a ferramenta precisa sobreviver ao impacto, e em ambos os casos dureza, resist\u00eancia e ductilidade variam em conjunto com a temperatura de revenimento. Mantenha o valor de impacto em seu pr\u00f3prio contexto, pois ele pertence a um ensaio sem entalhe em uma das corridas de L2 e n\u00e3o \u00e9 compar\u00e1vel com leituras com entalhe publicadas para outros graus.<\/p>\n\n\n\n

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

Os dois graus destas tabelas s\u00e3o descritos com suas formas, faixas de se\u00e7\u00e3o e condi\u00e7\u00f5es de entrega em A\u00e7o para ferramentas L6<\/a>, e a sequ\u00eancia de t\u00eampera, resfriamento e revenimento para o mesmo grau est\u00e1 apresentada em Tratamento t\u00e9rmico de a\u00e7o ferramenta L6<\/a>. A escolha entre o L6 e um grau para trabalho a quente para uma matriz de forjamento \u00e9 analisada em A\u00e7o ferramenta H13 e 1.2714 (L6)<\/a>, a dureza que cada grau mant\u00e9m ap\u00f3s um dado revenimento est\u00e1 representada em Tabela de revenimento de a\u00e7o para ferramentas<\/a>, os valores de impacto para toda a faixa est\u00e3o reunidos em tenacidade ao impacto de a\u00e7os ferramenta<\/a>, e o grupo ao qual esses a\u00e7os pertencem \u00e9 apresentado em a\u00e7o para ferramentas endurec\u00edvel em \u00f3leo<\/a>.<\/p>\n\n\n\n

\n

Propriedades de tra\u00e7\u00e3o do a\u00e7o ferramenta L6, PDF para impress\u00e3o<\/strong><\/p>\n\n

A resist\u00eancia \u00e0 tra\u00e7\u00e3o, o alongamento, a redu\u00e7\u00e3o de \u00e1rea e a dureza do a\u00e7o ferramenta L6 ap\u00f3s revenimento de 205 a 650 °C (400 a 1200 °F), com a compara\u00e7\u00e3o do L2 com e sem van\u00e1dio, em um \u00fanico PDF com nossos dados de contato.<\/p>\n\n

\n
Baixar PDF<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n

Compilado de Tool Steels (G. A. Roberts e G. Krauss), Tabela 8-10 e Tabela 8-7, nas p\u00e1ginas impressas 158 e 148, o cap\u00edtulo sobre a\u00e7os ferramenta especiais de baixa liga. A fonte imprime as colunas de temperatura da Tabela 8-10 com seus t\u00edtulos trocados e os valores aqui est\u00e3o pareados conforme as temperaturas equivalentes impressas na figura da mesma p\u00e1gina. As tabelas s\u00e3o reproduzidas como publicadas e s\u00e3o um resumo de refer\u00eancia e n\u00e3o uma especifica\u00e7\u00e3o da Aobo Steel, portanto trate-as como o comportamento medido de uma corrida sob um tratamento t\u00e9rmico e n\u00e3o como um valor admiss\u00edvel de projeto para uma matriz espec\u00edfica.<\/p>","protected":false},"excerpt":{"rendered":"

L6 Tool Steel Tensile Properties After Tempering L6 is the low-alloy tool steel that shops reach for when a die has to absorb shock rather than resist abrasion, and the numbers that describe that behaviour are tensile strength, elongation and reduction of area measured on tempered specimens. The tables below collect one L6 heat carried […]<\/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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Tempering<\/title>\n<meta name=\"description\" content=\"Measured tensile strength, elongation, reduction of area and hardness for L6 tool steel after tempering from 205 to 650 C, with the L2 with and without vanadium comparison.\" \/>\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\/l6-tool-steel-tensile-properties\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L6 Tool Steel Tensile Properties After Tempering\" \/>\n<meta property=\"og:description\" content=\"Measured tensile strength, elongation, reduction of area and hardness for L6 tool steel after tempering from 205 to 650 C, with the L2 with and without vanadium comparison.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/pt\/l6-tool-steel-tensile-properties\/\" \/>\n<meta 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Tool Steel Tensile Properties After Tempering L6 is the low-alloy tool steel that shops reach for when a die has to absorb shock rather than resist abrasion, and the numbers that describe that behaviour are tensile strength, elongation and reduction of area measured on tempered specimens. 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