{"id":13493,"date":"2026-03-11T21:23:05","date_gmt":"2026-03-11T13:23:05","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=13493"},"modified":"2026-10-30T20:06:48","modified_gmt":"2026-10-30T12:06:48","slug":"h13-steel-composition","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/h13-steel-composition\/","title":{"rendered":"Composici\u00f3n qu\u00edmica del acero para herramientas H13 (1.2344 \/ SKD61)"},"content":{"rendered":"

Composici\u00f3n qu\u00edmica del acero para herramientas H13<\/h1>\n\n\n\n

H13<\/a> Es un acero para herramientas de trabajo en caliente de cromo-molibdeno-vanadio utilizado en matrices de fundici\u00f3n a presi\u00f3n, matrices de forja y herramientas de extrusi\u00f3n. Su capacidad para soportar ciclos repetidos de calentamiento y enfriamiento se debe a un equilibrio espec\u00edfico de elementos de aleaci\u00f3n, en lugar de a la acci\u00f3n aislada de un solo elemento. El carbono, el cromo, el molibdeno y el vanadio trabajan conjuntamente para controlar la templabilidad, la formaci\u00f3n de carburos y la resistencia al ablandamiento a altas temperaturas.<\/p>\n\n\n\n

Para los compradores que revisan un certificado de prueba de f\u00e1brica, los valores de composici\u00f3n solo tienen sentido en su contexto. Un lote que se encuentra dentro del rango, pero con un contenido bajo de cromo y molibdeno, se comportar\u00e1 de manera diferente en un bloque de matriz grande que uno con un contenido alto, especialmente en t\u00e9rminos de templabilidad en secciones gruesas. Comprender la funci\u00f3n de cada elemento permite interpretar un certificado como un indicador de rendimiento, y no solo como una lista de verificaci\u00f3n de aprobado o reprobado.<\/p>\n\n\n\n

Composici\u00f3n qu\u00edmica est\u00e1ndar<\/h2>\n\n\n\n

La tabla que aparece a continuaci\u00f3n muestra el rango de composici\u00f3n est\u00e1ndar para AISI H13, UNS T20813.<\/p>\n\n\n\n

Elemento<\/th>S\u00edmbolo<\/th>Peso %<\/th><\/tr><\/thead>
Carbono<\/td>C<\/td>0,32 a 0,45<\/td><\/tr>
Cromo<\/td>Cr<\/td>4,75 a 5,50<\/td><\/tr>
Molibdeno<\/td>Mo<\/td>1,10 a 1,75<\/td><\/tr>
Vanadio<\/td>V<\/td>0,80 a 1,20<\/td><\/tr>
Silicon<\/td>Si<\/td>0,80 a 1,25<\/td><\/tr>
Manganese<\/td>Mn<\/td>0,20 a 0,60<\/td><\/tr>
F\u00f3sforo<\/td>P<\/td>0,030 m\u00e1ximo<\/td><\/tr>
Azufre<\/td>S<\/td>0,030 m\u00e1ximo<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

H13 is commonly specified alongside its international equivalents, DIN 1.2344 and JIS SKD61. The three standards share the same alloy family and are generally treated as interchangeable in tooling procurement, though the published ranges are not always identical element for element. The P\u00e1gina del acero para herramientas 1.2344<\/a> covers the EN number itself, including the other tool steel grades that carry a 1.23 number.<\/p>\n\n\n\n

Elemento<\/th>AISI H13<\/th>DIN 1.2344<\/th>JIS SKD61<\/th><\/tr><\/thead>
Carbono<\/td>0,32 a 0,45<\/td>0,35 a 0,42<\/td>0,35 a 0,42<\/td><\/tr>
Cromo<\/td>4,75 a 5,50<\/td>4,80 a 5,50<\/td>4,80 a 5,50<\/td><\/tr>
Molibdeno<\/td>1,10 a 1,75<\/td>1,20 a 1,50<\/td>1,00 a 1,50<\/td><\/tr>
Vanadio<\/td>0,80 a 1,20<\/td>0,85 a 1,15<\/td>0,80 a 1,15<\/td><\/tr>
Silicon<\/td>0,80 a 1,25<\/td>0,80 a 1,20<\/td>0,80 a 1,20<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Las diferencias son lo suficientemente peque\u00f1as como para que las acer\u00edas a menudo suministren productos conforme a cualquiera de las tres normas de la misma colada, pero los compradores con requisitos de especificaci\u00f3n estrictos deber\u00edan solicitar el certificado conforme a la norma exacta que se indica en su orden de compra, en lugar de asumir una equivalencia total.<\/p>\n\n\n\n

Por qu\u00e9 la composici\u00f3n es importante para la templabilidad<\/h2>\n\n\n\n

H13 combina carbono moderado con tres elementos fuertemente formadores de carburos: cromo, molibdeno y vanadio. Esta combinaci\u00f3n le otorga al acero una profunda templabilidad, lo que significa que puede transformarse en martensita<\/a> mediante enfriamiento al aire incluso en secciones relativamente gruesas. El temple al aire mantiene bajos el esfuerzo de temple y la distorsi\u00f3n, lo cual es directamente importante para bloques de matriz grandes, donde una secci\u00f3n deformada o agrietada durante el tratamiento t\u00e9rmico significa material desechado.<\/p>\n\n\n\n

Durante el revenido, los mismos tres elementos precipitan como finos carburos de aleaci\u00f3n dentro de la matriz martens\u00edtica. Esto le da al H13 su respuesta de endurecimiento secundario y le permite mantener propiedades \u00fatiles. dureza<\/a> a temperaturas de funcionamiento que ablandar\u00edan el acero al carbono simple o el acero de baja aleaci\u00f3n.<\/p>\n\n\n\n

Funci\u00f3n de los elementos individuales<\/h2>\n\n\n\n

Carb\u00f3n.<\/strong> El carbono impulsa el endurecimiento martens\u00edtico y se mantiene en un nivel moderado de 0,32 a 0,45 por ciento para que el acero gane dureza sin volverse quebradizo. Un exceso de carbono en un acero para trabajo en caliente aumenta el riesgo de agrietamiento por choque t\u00e9rmico, que es precisamente el modo de falla que se busca evitar con el acero H13.<\/p>\n\n\n\n

Cromo.<\/strong> Con una proporci\u00f3n de entre 4,75 y 5,50 %, el cromo es el principal componente de aleaci\u00f3n despu\u00e9s del hierro. Aumenta la templabilidad, permitiendo que las secciones gruesas se endurezcan completamente al aire, mejora la resistencia a la oxidaci\u00f3n durante el tratamiento t\u00e9rmico y forma carburos ricos en cromo que contribuyen a la resistencia al desgaste y a la estabilidad del revenido.<\/p>\n\n\n\n

Molibdeno.<\/strong> El molibdeno fortalece el acero a altas temperaturas y ralentiza el crecimiento de los carburos durante el revenido. Este elemento es el principal responsable de que el acero H13 mantenga su dureza tras repetidos ciclos t\u00e9rmicos en servicio, en lugar de ablandarse tras las primeras series de producci\u00f3n.<\/p>\n\n\n\n

Vanadio.<\/strong> El vanadio forma los carburos m\u00e1s duros y estables de la aleaci\u00f3n. Controla el crecimiento del grano durante el tratamiento t\u00e9rmico y es la raz\u00f3n principal por la que la aleaci\u00f3n H13 supera a las aleaciones con menor contenido de vanadio, como la H11, en resistencia a la abrasi\u00f3n. Los compradores que comparen la aleaci\u00f3n H13 con la H11 en un certificado deben fijarse primero en el contenido de vanadio, ya que este dato explica la mayor parte de la diferencia en el rendimiento frente al desgaste entre ambas aleaciones.<\/p>\n\n\n\n

Silicio.<\/strong> El silicio act\u00faa principalmente como desoxidante, un proceso heredado de la fabricaci\u00f3n de acero, y aporta cierta resistencia al revenido mediante el endurecimiento por soluci\u00f3n s\u00f3lida. Un nivel de silicio superior al rango especificado puede reducir la tenacidad, por lo que conviene revisar con detenimiento los certificados que indiquen un nivel de silicio cercano al l\u00edmite superior del rango en aplicaciones donde la tenacidad es fundamental.<\/p>\n\n\n\n

Manganeso.<\/strong> El manganeso favorece la desoxidaci\u00f3n y reacciona con el azufre para formar sulfuros de manganeso, lo que reduce el riesgo de fragilidad en caliente durante el forjado. El contenido de manganeso en la aleaci\u00f3n H13 se mantiene relativamente bajo, ya que niveles elevados aumentan la susceptibilidad al agrietamiento por temple.<\/p>\n\n\n\n

Control de impurezas<\/h2>\n\n\n\n

El f\u00f3sforo y el azufre est\u00e1n limitados a un m\u00e1ximo del 0,030 por ciento. El f\u00f3sforo se segrega en los l\u00edmites de grano y promueve la fragilizaci\u00f3n, mientras que el azufre forma inclusiones de sulfuro que reducen la ductilidad transversal y pueden actuar como puntos de iniciaci\u00f3n de grietas bajo carga c\u00edclica. El grado H13 superior, en particular el material destinado a grandes bloques de fundici\u00f3n a presi\u00f3n o superficies de cavidades pulidas, a menudo se produce con un refinado secundario, como la desgasificaci\u00f3n al vac\u00edo o la refundici\u00f3n por electroescoria, para reducir el contenido de inclusiones muy por debajo del l\u00edmite est\u00e1ndar. Si un proyecto especifica Material de ESR<\/a>, El certificado deber\u00eda indicar esto expl\u00edcitamente, en lugar de limitarse a confirmar que el f\u00f3sforo y el azufre se encuentran dentro del rango est\u00e1ndar.<\/p>\n\n\n\n

C\u00f3mo la composici\u00f3n influye en el tratamiento t\u00e9rmico<\/h2>\n\n\n\n

El cromo, el molibdeno y el vanadio permiten que el H13 se austenice a una temperatura relativamente alta, t\u00edpicamente de 1010 a 1030 grados Celsius, de modo que los carburos de aleaci\u00f3n se disuelven completamente antes del temple. Durante el revenido, esos mismos elementos vuelven a aparecer como precipitados finos, produciendo la curva de endurecimiento secundario que es caracter\u00edstica del H13 y otros grados de trabajo en caliente. Debido a que estos elementos tambi\u00e9n forman nitruros estables, el H13 responde bien a la nitruraci\u00f3n, que se usa com\u00fanmente para agregar una capa superficial dura y resistente al desgaste sin afectar la tenacidad del n\u00facleo del troquel. Para obtener informaci\u00f3n detallada, consulte la Gu\u00eda de tratamiento t\u00e9rmico H13<\/a>.<\/p>\n\n\n\n

Lectura de un informe de an\u00e1lisis qu\u00edmico<\/h2>\n\n\n\n

La primera comprobaci\u00f3n de cualquier certificado consiste en confirmar que todos los elementos se encuentran dentro del rango especificado. Esto confirma que el material es H13, pero no su rendimiento. Dos lotes pueden cumplir con los requisitos de composici\u00f3n y, aun as\u00ed, comportarse de manera diferente en servicio si las pr\u00e1cticas de fusi\u00f3n, forjado o tratamiento t\u00e9rmico difieren. Por ello, es recomendable interpretar los datos de composici\u00f3n junto con el certificado de ensayo del material y, cuando est\u00e9n disponibles, los resultados de las pruebas ultras\u00f3nicas, en lugar de considerarlos como un indicador de calidad independiente.<\/p>","protected":false},"excerpt":{"rendered":"

H13 Tool Steel Chemical Composition H13 is a chromium-molybdenum-vanadium hot work tool steel used for die casting dies, forging dies, and extrusion tooling. Its ability to withstand repeated heating and cooling cycles comes from a specific balance of alloying elements rather than any single element acting alone. Carbon, chromium, molybdenum, and vanadium work together to […]<\/p>\n","protected":false},"author":1,"featured_media":17056,"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":"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 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