{"id":20482,"date":"2026-10-01T14:07:33","date_gmt":"2026-10-01T06:07:33","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20482"},"modified":"2026-10-16T00:45:22","modified_gmt":"2026-10-15T16:45:22","slug":"hot-work-tool-steel-tensile-strength","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/hot-work-tool-steel-tensile-strength\/","title":{"rendered":"Resistencia a la tracci\u00f3n de los aceros para herramientas de trabajo en caliente a temperatura elevada"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Resistencia a la tracci\u00f3n de los aceros para herramientas de trabajo en caliente a temperatura elevada<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Los aceros para herramientas de trabajo en caliente se eligen por la resistencia que conservan mientras est\u00e1n calientes, y las cifras que responden a esa pregunta son la resistencia a la tracci\u00f3n y el l\u00edmite el\u00e1stico medidos a la temperatura de trabajo y no a temperatura ambiente. Aqu\u00ed se re\u00fanen tres grados de cromo para trabajo en caliente. H11 y H13 son los dos aceros con los que se fabrica la mayor parte de los utillajes de fundici\u00f3n de aluminio por inyecci\u00f3n y de forja en caliente, y H12 es el grado m\u00e1s aleado que se usa donde la herramienta tiene que soportar un impacto m\u00e1s severo. Cada cifra corresponde exactamente al tratamiento t\u00e9rmico y a la temperatura de ensayo indicados junto a ella, por lo que la tabla debe leerse como el comportamiento medido de esa \u00fanica condici\u00f3n. Este es un resumen de referencia de la pr\u00e1ctica publicada y no una especificaci\u00f3n nuestra.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e9 miden las cifras<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La resistencia a la tracci\u00f3n se mide sobre una probeta traccionada a la temperatura de la primera columna, por lo que el valor describe el acero mientras est\u00e1 caliente y no despu\u00e9s de haberse enfriado. Por encima de unos 400 \u00b0C todo acero de cromo para trabajo en caliente pierde resistencia de forma constante, y la velocidad a la que la pierde es lo que distingue un grado de otro. El alargamiento y la reducci\u00f3n de \u00e1rea se miden sobre la misma probeta y aumentan a medida que cae la resistencia, raz\u00f3n por la cual la condici\u00f3n m\u00e1s tenaz de un acero para trabajo en caliente nunca es la m\u00e1s resistente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los tres grados se ensayaron tras tratamientos t\u00e9rmicos diferentes y cada tabla va precedida del tratamiento al que pertenece. Dos de las condiciones de H12 se ensayaron tras temple en aceite desde 1050 \u00b0C y una tercera tras enfriamiento al aire desde 980 \u00b0C, por lo que las cifras de H12 no son un \u00fanico conjunto. La fuente no reporta l\u00edmite el\u00e1stico para todas las condiciones, ni la dureza despu\u00e9s del ensayo para todas las condiciones; esas celdas se marcan como No reportado en lugar de tomarse de otra condici\u00f3n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Propiedades de tracci\u00f3n del acero para herramientas H11 a temperatura<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Enfriado al aire desde 1010 \u00b0C y doble revenido de 2,5 h a 570 \u00b0C<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Temperatura de ensayo, &deg;C (&deg;F)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">Alargamiento en 50 mm (2 in.), %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reducci\u00f3n de \u00e1rea, %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza antes del ensayo, HRC<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza despu\u00e9s del ensayo, HRC<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Temperatura ambiente<\/td><td class=\"has-text-align-left\" data-align=\"left\">1806<\/td><td class=\"has-text-align-left\" data-align=\"left\">262<\/td><td class=\"has-text-align-left\" data-align=\"left\">1482<\/td><td class=\"has-text-align-left\" data-align=\"left\">215<\/td><td class=\"has-text-align-left\" data-align=\"left\">10.0<\/td><td class=\"has-text-align-left\" data-align=\"left\">35.8<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">150 (300)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1689<\/td><td class=\"has-text-align-left\" data-align=\"left\">245<\/td><td class=\"has-text-align-left\" data-align=\"left\">1358<\/td><td class=\"has-text-align-left\" data-align=\"left\">197<\/td><td class=\"has-text-align-left\" data-align=\"left\">10.1<\/td><td class=\"has-text-align-left\" data-align=\"left\">36.1<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">260 (500)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1600<\/td><td class=\"has-text-align-left\" data-align=\"left\">232<\/td><td class=\"has-text-align-left\" data-align=\"left\">1345<\/td><td class=\"has-text-align-left\" data-align=\"left\">195<\/td><td class=\"has-text-align-left\" data-align=\"left\">9.8<\/td><td class=\"has-text-align-left\" data-align=\"left\">34.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">345 (650)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1579<\/td><td class=\"has-text-align-left\" data-align=\"left\">229<\/td><td class=\"has-text-align-left\" data-align=\"left\">1317<\/td><td class=\"has-text-align-left\" data-align=\"left\">191<\/td><td class=\"has-text-align-left\" data-align=\"left\">10.0<\/td><td class=\"has-text-align-left\" data-align=\"left\">35.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">425 (800)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1510<\/td><td class=\"has-text-align-left\" data-align=\"left\">219<\/td><td class=\"has-text-align-left\" data-align=\"left\">1289<\/td><td class=\"has-text-align-left\" data-align=\"left\">187<\/td><td class=\"has-text-align-left\" data-align=\"left\">11.4<\/td><td class=\"has-text-align-left\" data-align=\"left\">38.7<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">480 (900)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1427<\/td><td class=\"has-text-align-left\" data-align=\"left\">207<\/td><td class=\"has-text-align-left\" data-align=\"left\">1145<\/td><td class=\"has-text-align-left\" data-align=\"left\">166<\/td><td class=\"has-text-align-left\" data-align=\"left\">12.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">38.9<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">540 (1000)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1241<\/td><td class=\"has-text-align-left\" data-align=\"left\">180<\/td><td class=\"has-text-align-left\" data-align=\"left\">965<\/td><td class=\"has-text-align-left\" data-align=\"left\">140<\/td><td class=\"has-text-align-left\" data-align=\"left\">11.0<\/td><td class=\"has-text-align-left\" data-align=\"left\">35.4<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">595 (1100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">979<\/td><td class=\"has-text-align-left\" data-align=\"left\">142<\/td><td class=\"has-text-align-left\" data-align=\"left\">724<\/td><td class=\"has-text-align-left\" data-align=\"left\">105<\/td><td class=\"has-text-align-left\" data-align=\"left\">12.8<\/td><td class=\"has-text-align-left\" data-align=\"left\">46.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">47<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">650 (1200)<\/td><td class=\"has-text-align-left\" data-align=\"left\">586<\/td><td class=\"has-text-align-left\" data-align=\"left\">85<\/td><td class=\"has-text-align-left\" data-align=\"left\">434<\/td><td class=\"has-text-align-left\" data-align=\"left\">63<\/td><td class=\"has-text-align-left\" data-align=\"left\">18.9<\/td><td class=\"has-text-align-left\" data-align=\"left\">66.6<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">41<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Fuente, Tabla 13-4, Propiedades de tracci\u00f3n de aceros para herramientas de trabajo en caliente al cromo-molibdeno a temperaturas elevadas, H11 de Tool Steels (G. A. Roberts y G. Krauss). Composici\u00f3n 0.40% C, 0.92% Si, 5.09% Cr, 1.34% Mo, 0.52% V; austenizado a 1010 \u00b0C (1850 \u00b0F) y enfriado al aire, luego doble revenido 2.5 h a 570 \u00b0C (1060 \u00b0F). La fila de temperatura ambiente se imprime como Room en la fuente y no lleva una cifra de grados separada.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H11 mantiene un l\u00edmite el\u00e1stico de 1482 MPa a temperatura ambiente y a\u00fan mantiene 1289 MPa a 425 \u00b0C, por lo que la herramienta solo ha perdido alrededor de una d\u00e9cima parte de su l\u00edmite el\u00e1stico a la temperatura a la que trabaja la fundici\u00f3n de aluminio por inyecci\u00f3n. Por encima de 480 \u00b0C la ca\u00edda se acent\u00faa, y por encima de 540 \u00b0C es r\u00e1pida, con el l\u00edmite el\u00e1stico descendiendo a 965 MPa a 540 \u00b0C y a 434 MPa a 650 \u00b0C. El alargamiento y la reducci\u00f3n de \u00e1rea aumentan a medida que cae la resistencia, desde un 10,0 por ciento de alargamiento a temperatura ambiente hasta un 18,9 por ciento a 650 \u00b0C, que es la ductilidad que permite a una herramienta caliente deformarse en lugar de agrietarse cuando se sobrecarga. La dureza despu\u00e9s del ensayo muestra cu\u00e1nto se abland\u00f3 la probeta mientras se traccionaba, manteniendo 50 HRC hasta 540 \u00b0C pero cayendo a 47 HRC a 595 \u00b0C y 41 HRC a 650 \u00b0C.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Propiedades de tracci\u00f3n del acero para herramientas H13 a temperatura<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Templado en aceite desde 1010 \u00b0C y revenido 2 h a 565 \u00b0C<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Temperatura de ensayo, &deg;C (&deg;F)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">Alargamiento en 50 mm (2 in.), %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reducci\u00f3n de \u00e1rea, %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza antes del ensayo, HRC<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza despu\u00e9s del ensayo, HRC<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">480 (900)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1531<\/td><td class=\"has-text-align-left\" data-align=\"left\">222<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">9<\/td><td class=\"has-text-align-left\" data-align=\"left\">37<\/td><td class=\"has-text-align-left\" data-align=\"left\">52<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">540 (1000)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1413<\/td><td class=\"has-text-align-left\" data-align=\"left\">205<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">11<\/td><td class=\"has-text-align-left\" data-align=\"left\">43<\/td><td class=\"has-text-align-left\" data-align=\"left\">52<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">595 (1100)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1193<\/td><td class=\"has-text-align-left\" data-align=\"left\">173<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">15<\/td><td class=\"has-text-align-left\" data-align=\"left\">49<\/td><td class=\"has-text-align-left\" data-align=\"left\">52<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">650 (1200)<\/td><td class=\"has-text-align-left\" data-align=\"left\">814<\/td><td class=\"has-text-align-left\" data-align=\"left\">118<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">22<\/td><td class=\"has-text-align-left\" data-align=\"left\">59<\/td><td class=\"has-text-align-left\" data-align=\"left\">52<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Fuente, Tabla 13-4, H13 de Tool Steels (G. A. Roberts y G. Krauss). Composici\u00f3n 0.40% C, 1.00% Si, 5.25% Cr, 1.15% Mo, 1.00% V; austenizado a 1010 \u00b0C (1850 \u00b0F) y templado en aceite, luego revenido 2 h a 565 \u00b0C (1050 \u00b0F). La fuente no reporta l\u00edmite de fluencia ni dureza despu\u00e9s del ensayo para esta condici\u00f3n.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La condici\u00f3n de H13 reportada aqu\u00ed se ensay\u00f3 solo desde 480 \u00b0C en adelante, que es el rango que importa dentro de un molde. La resistencia a la tracci\u00f3n cae de 1531 MPa a 480 \u00b0C a 814 MPa a 650 \u00b0C, y el alargamiento medido sobre las mismas probetas sube del 9 al 22 por ciento en ese intervalo. H13 presenta 52 HRC antes del ensayo a todas las temperaturas de la tabla, por lo que la p\u00e9rdida de resistencia con la temperatura ocurre sin una p\u00e9rdida equivalente en la dureza tal como se templa y reviene. La fuente no reporta l\u00edmite el\u00e1stico ni dureza despu\u00e9s del ensayo para esta condici\u00f3n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Propiedades de tracci\u00f3n del acero para herramientas H12 a temperatura<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Templado en aceite desde 1050 \u00b0C y revenido 2 h a 565 \u00b0C<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Temperatura de ensayo, &deg;C (&deg;F)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">Alargamiento en 50 mm (2 in.), %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reducci\u00f3n de \u00e1rea, %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza antes del ensayo, HRC<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza despu\u00e9s del ensayo, HRC<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">400 (750)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1703<\/td><td class=\"has-text-align-left\" data-align=\"left\">247<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">12<\/td><td class=\"has-text-align-left\" data-align=\"left\">36<\/td><td class=\"has-text-align-left\" data-align=\"left\">53<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">540 (1000)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1482<\/td><td class=\"has-text-align-left\" data-align=\"left\">215<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">12<\/td><td class=\"has-text-align-left\" data-align=\"left\">41<\/td><td class=\"has-text-align-left\" data-align=\"left\">53<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">650 (1200)<\/td><td class=\"has-text-align-left\" data-align=\"left\">531<\/td><td class=\"has-text-align-left\" data-align=\"left\">77<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">32<\/td><td class=\"has-text-align-left\" data-align=\"left\">83<\/td><td class=\"has-text-align-left\" data-align=\"left\">53<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">760 (1400)<\/td><td class=\"has-text-align-left\" data-align=\"left\">124<\/td><td class=\"has-text-align-left\" data-align=\"left\">18<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><td class=\"has-text-align-left\" data-align=\"left\">71<\/td><td class=\"has-text-align-left\" data-align=\"left\">97<\/td><td class=\"has-text-align-left\" data-align=\"left\">53<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Fuente, Tabla 13-4, H12 templado en aceite desde 1050 \u00b0C de Tool Steels (G. A. Roberts y G. Krauss). Composici\u00f3n 0.33% C, 0.85% Si, 5.00% Cr, 1.25% W, 1.45% Mo, 0.23% V; austenizado a 1050 \u00b0C (1925 \u00b0F) y templado en aceite, luego revenido 2 h a 565 \u00b0C (1050 \u00b0F). La fuente no reporta l\u00edmite de fluencia ni dureza despu\u00e9s del ensayo para esta condici\u00f3n.<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Enfriado al aire desde 980 \u00b0C y revenido 1,5 h a 565 \u00b0C<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Temperatura de ensayo, &deg;C (&deg;F)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resistencia a la tracci\u00f3n, ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), MPa<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite el\u00e1stico (deformaci\u00f3n del 0,2 %), ksi<\/th><th class=\"has-text-align-left\" data-align=\"left\">Alargamiento en 50 mm (2 in.), %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Reducci\u00f3n de \u00e1rea, %<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza antes del ensayo, HRC<\/th><th class=\"has-text-align-left\" data-align=\"left\">Dureza despu\u00e9s del ensayo, HRC<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">540 (1000)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1358<\/td><td class=\"has-text-align-left\" data-align=\"left\">197<\/td><td class=\"has-text-align-left\" data-align=\"left\">1086.7<\/td><td class=\"has-text-align-left\" data-align=\"left\">157.6<\/td><td class=\"has-text-align-left\" data-align=\"left\">10<\/td><td class=\"has-text-align-left\" data-align=\"left\">55<\/td><td class=\"has-text-align-left\" data-align=\"left\">50<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">620 (1150)<\/td><td class=\"has-text-align-left\" data-align=\"left\">593.7<\/td><td class=\"has-text-align-left\" data-align=\"left\">86.1<\/td><td class=\"has-text-align-left\" data-align=\"left\">396.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">57.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">24<\/td><td class=\"has-text-align-left\" data-align=\"left\">71<\/td><td class=\"has-text-align-left\" data-align=\"left\">49.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">No reportado<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Fuente, Tabla 13-4, H12 enfriado al aire desde 980 \u00b0C de Tool Steels (G. A. Roberts y G. Krauss). El acero fue austenizado a 980 \u00b0C (1800 \u00b0F), enfriado al aire, luego revenido 1.5 h a 565 \u00b0C (1050 \u00b0F). La fuente no reporta dureza despu\u00e9s del ensayo para esta condici\u00f3n.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H12 es el miembro con tungsteno del grupo de cromo para trabajo en caliente, y las dos condiciones anteriores muestran cu\u00e1nto importa el tratamiento t\u00e9rmico de partida. Tras el temple en aceite desde 1050 \u00b0C el acero mantiene 1703 MPa a 400 \u00b0C y 1482 MPa a 540 \u00b0C, luego cae a 531 MPa a 650 \u00b0C y 124 MPa a 760 \u00b0C, con el alargamiento subiendo del 12 al 71 por ciento en ese mismo intervalo de temperatura. La condici\u00f3n enfriada al aire es m\u00e1s blanda de partida, con 1358 MPa a 540 \u00b0C, y es la \u00fanica condici\u00f3n de H12 para la que la fuente reporta un l\u00edmite el\u00e1stico, 1086,7 MPa a 540 \u00b0C y 396,5 MPa a 620 \u00b0C.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lectura conjunta de los cuatro conjuntos de cifras<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los cuatro conjuntos plantean el mismo punto a distintas temperaturas. La resistencia cae con la temperatura en todos los casos y la ductilidad sube para compensarla, por lo que una herramienta de trabajo en caliente que se utiliza por encima de su temperatura de trabajo no se vuelve fr\u00e1gil, sino blanda y se deforma. H12 templado en aceite desde 1050 \u00b0C parte con m\u00e1s resistencia que H11 o H13 a la misma temperatura de ensayo, y H12 mantiene 53 HRC y H13 mantiene 52 HRC antes del ensayo donde H11 presenta 50 HRC. La selecci\u00f3n entre los tres grados sigue primero la temperatura de trabajo de la herramienta y segundo las cargas de impacto que recibe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dos advertencias se aplican a los cuatro conjuntos. La primera es que las cifras corresponden exactamente al tratamiento t\u00e9rmico indicado en el encabezado sobre la tabla, por lo que un molde austenizado o revenido de forma distinta se situar\u00e1 en otro punto de estas escalas. La segunda es que los valores proceden de una \u00fanica fuente publicada sobre una \u00fanica colada de cada condici\u00f3n, por lo que conviene confirmar las cifras de trabajo con el certificado de ensayo de la colada que se compre.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Datos de referencia relacionados<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los dos grados m\u00e1s usados en utillajes de trabajo en caliente se listan con sus formas, rangos de secci\u00f3n y condiciones de entrega en <a href=\"https:\/\/aobosteel.com\/es\/h11-tool-steel\/\">acero para herramientas H11<\/a> y <a href=\"https:\/\/aobosteel.com\/es\/h13-tool-steel\/\">Acero para herramientas H13<\/a>. Sus rangos de dureza y su comportamiento a la temperatura de trabajo se exponen en <a href=\"https:\/\/aobosteel.com\/es\/h11-tool-steel-properties\/\">Propiedades del acero para herramientas H11<\/a> y <a href=\"https:\/\/aobosteel.com\/es\/h13-steel-properties\/\">Propiedades del acero H13<\/a>, y la dureza que conserva cada grado de 315 a 650 \u00b0C se representa en <a href=\"https:\/\/aobosteel.com\/es\/tool-steel-hot-hardness-chart\/\">dureza en caliente de los aceros para herramientas<\/a>. Las propiedades f\u00edsicas como la conductividad t\u00e9rmica y la dilataci\u00f3n est\u00e1n en <a href=\"https:\/\/aobosteel.com\/es\/hot-work-tool-steel-physical-properties\/\">Propiedades f\u00edsicas del acero para trabajo en caliente<\/a>, el tratamiento t\u00e9rmico de H12 est\u00e1 en <a href=\"https:\/\/aobosteel.com\/es\/h12-tool-steel-heat-treatment\/\">Tratamiento t\u00e9rmico del acero para herramientas H12<\/a>, y la elecci\u00f3n de grado para un molde espec\u00edfico se desarrolla en <a href=\"https:\/\/aobosteel.com\/es\/selection-of-tool-steel-for-hot-extrusion-dies\/\">selecci\u00f3n de acero para matrices de extrusi\u00f3n en caliente<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-3e4fb3d2 wp-block-group-is-layout-constrained\" style=\"border-radius:8px;background-color:#f4f8ff;margin-bottom:24px;padding-top:20px;padding-right:24px;padding-bottom:20px;padding-left:24px\">\n<p class=\"wp-block-paragraph\"><strong>Resistencia a la tracci\u00f3n de los aceros para herramientas de trabajo en caliente a temperatura, PDF imprimible<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">La resistencia a la tracci\u00f3n, el l\u00edmite el\u00e1stico, el alargamiento, la reducci\u00f3n de \u00e1rea y la dureza publicados antes y despu\u00e9s del ensayo para los aceros para trabajo en caliente H11, H13 y H12, desde temperatura ambiente hasta 760 \u00b0C, en un PDF con nuestros datos de contacto.<\/p>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/Aobo-Steel-Hot-Work-Tool-Steel-Tensile-Strength.pdf\">Descargar PDF, 436 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Fuente: Tool Steels (G. A. Roberts y G. Krauss).<\/p>","protected":false},"excerpt":{"rendered":"<p>Hot Work Tool Steel Tensile Strength at Elevated Temperature Hot work tool steels are chosen for the strength they keep while they are hot, and the figures that answer that question are tensile and yield strength measured at the working temperature rather than at room temperature. Three chromium hot work grades are collected here. H11 [&hellip;]<\/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 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-20482","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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Work Tool Steel Tensile Strength at Elevated Temperature Hot work tool steels are chosen for the strength they keep while they are hot, and the figures that answer that question are tensile and yield strength measured at the working temperature rather than at room temperature. 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