{"id":12376,"date":"2026-01-23T10:28:19","date_gmt":"2026-01-23T02:28:19","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12376"},"modified":"2026-03-31T15:55:08","modified_gmt":"2026-03-31T07:55:08","slug":"selection-of-tool-steel-for-die-casting-cores-and-inserts","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/selection-of-tool-steel-for-die-casting-cores-and-inserts\/","title":{"rendered":"Gu\u00eda de selecci\u00f3n de aceros para herramientas de fundici\u00f3n a presi\u00f3n para n\u00facleos e insertos | Suministro a granel"},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-185f9477 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h1 class=\"wp-block-heading\" id=\"h-selection-of-tool-steel-for-die-casting-cores-and-inserts\">Selecci\u00f3n de acero para herramientas para n\u00facleos e insertos de fundici\u00f3n a presi\u00f3n<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Los n\u00facleos e insertos suelen ser los primeros componentes en fallar en las herramientas de fundici\u00f3n a presi\u00f3n. Su vida \u00fatil determina directamente la frecuencia del mantenimiento, el costo de las herramientas y el tiempo de inactividad de la producci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante el funcionamiento, el metal fundido entra en la cavidad a presiones de 20 a 150 MPa, llegando en casos extremos a alcanzar los 700 MPa. Simult\u00e1neamente, los insertos se someten a un calentamiento superficial r\u00e1pido seguido de un enfriamiento forzado. Esto genera fuertes gradientes t\u00e9rmicos entre la superficie y el n\u00facleo, lo que provoca repetidas expansiones y contracciones en cada ciclo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En estas condiciones, la falla se debe a mecanismos identificables en lugar de da\u00f1os aleatorios. En la producci\u00f3n, los insertos suelen fallar de una de las siguientes maneras:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u00e9rdida de material superficial causada por el flujo de fusi\u00f3n a alta velocidad (lavado).<\/li>\n\n\n\n<li>Adhesi\u00f3n entre la aleaci\u00f3n fundida y la superficie de la herramienta (soldadura)<\/li>\n\n\n\n<li>Redes de grietas superficiales debidas a la tensi\u00f3n t\u00e9rmica c\u00edclica (fisuras por calor)<\/li>\n\n\n\n<li>Fractura s\u00fabita debida a concentraci\u00f3n de tensi\u00f3n o choque t\u00e9rmico.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Por lo tanto, la selecci\u00f3n del acero para herramientas debe basarse en el modo de fallo que predomina en el proceso, y no en las propiedades generales del material.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u00f3gica de selecci\u00f3n de n\u00facleos<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En el caso de los n\u00facleos e insertos de fundici\u00f3n a presi\u00f3n, la selecci\u00f3n del material viene determinada por si la falla se debe principalmente al ablandamiento t\u00e9rmico o al agrietamiento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si el material pierde resistencia a altas temperaturas, la erosi\u00f3n y la deformaci\u00f3n se aceleran.<br>Si el material carece de tenacidad, se producir\u00e1n grietas antes de que el desgaste sea relevante.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La calificaci\u00f3n correcta se elige identificando el mecanismo de falla principal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fatiga t\u00e9rmica (comprobaci\u00f3n de calor)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando los insertos fallan por agrietamiento superficial, la causa principal es el estr\u00e9s t\u00e9rmico c\u00edclico. La superficie se expande con el calor mientras que el interior la restringe, creando esfuerzos repetidos de tracci\u00f3n y compresi\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los materiales con una microestructura estable a temperaturas elevadas retrasan la aparici\u00f3n de grietas y reducen la velocidad de propagaci\u00f3n de las mismas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Resistencia al calor y al ablandamiento<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Si los insertos presentan deformaci\u00f3n pl\u00e1stica o desgaste superficial r\u00e1pido, el factor limitante es la resistencia a altas temperaturas. El material debe conservar su dureza a la temperatura de funcionamiento para resistir la erosi\u00f3n y mantener la estabilidad dimensional.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esto se vuelve fundamental en condiciones de fundici\u00f3n a alta velocidad o a alta temperatura.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Resistencia a la fractura (tenacidad)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando el fallo se manifiesta como un agrietamiento repentino, especialmente en secciones delgadas o geometr\u00edas afiladas, la tenacidad se convierte en el factor determinante.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En este caso, aumentar la dureza suele acelerar la fractura en lugar de solucionarla. La selecci\u00f3n de materiales debe orientarse hacia grados con mayor resistencia a la fractura.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Resistencia a la soldadura<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En la fundici\u00f3n de aluminio a presi\u00f3n, el aluminio fundido reacciona con el hierro, formando capas intermet\u00e1licas. Esto provoca adherencias, desgarros y da\u00f1os en la superficie durante la eyecci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este comportamiento est\u00e1 influenciado principalmente por la composici\u00f3n del material base y se agrava bajo exposici\u00f3n a altas temperaturas y ciclos prolongados.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aceros para herramientas recomendados<\/h2>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-63de5395\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-85bcb587\"><h3 class=\"uagb-heading-text\">H13 (1.2344 \/ SKD61)<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">El H13 es la opci\u00f3n est\u00e1ndar para la mayor\u00eda de los insertos de fundici\u00f3n a presi\u00f3n porque ofrece una combinaci\u00f3n equilibrada de resistencia a la fatiga t\u00e9rmica y tenacidad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ofrece un rendimiento fiable bajo ciclos de calentamiento y enfriamiento, y puede funcionar en refrigeraci\u00f3n por agua sin agrietarse inmediatamente. Esto lo hace id\u00f3neo para la fundici\u00f3n a presi\u00f3n de alto ciclo de aluminio, magnesio y zinc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El rango de dureza t\u00edpico es de 46 a 52 HRC, ajustado para equilibrar la resistencia al desgaste y a la fractura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El material H13 debe considerarse el material de referencia cuando la falla se distribuye entre la degradaci\u00f3n superficial y el agrietamiento moderado.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Enviar consulta ahora<\/a><\/div>\n\n\n\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link has-ast-global-color-3-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/aobosteel.com\/es\/h13-tool-steel\/\" style=\"background-color:#ffffff08\">Ver detalles de suministro H13<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-24c4ad1d\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-518cfdf1\"><h3 class=\"uagb-heading-text\">H11 (1.2343 \/ SKD6)<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Se selecciona H11 cuando la falla est\u00e1 dominada por el agrietamiento en lugar del desgaste.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En comparaci\u00f3n con el H13, ofrece mayor tenacidad y mejor resistencia a la fractura, lo que lo hace adecuado para n\u00facleos de secci\u00f3n transversal peque\u00f1a, transiciones abruptas y geometr\u00edas complejas con altas concentraciones de tensi\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En la pr\u00e1ctica, cuando los insertos H13 fallan prematuramente debido a grietas, cambiar a H11 suele ser m\u00e1s eficaz que ajustar la dureza o el tratamiento t\u00e9rmico.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El rango de dureza t\u00edpico es de 42 a 47 HRC, aunque a menudo se ajusta a la baja para mejorar a\u00fan m\u00e1s la resistencia a la fractura.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Enviar consulta ahora<\/a><\/div>\n\n\n\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link has-ast-global-color-3-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/aobosteel.com\/es\/h11-tool-steel\/\" style=\"background-color:#ffffff00\">Ver detalles de suministro H11<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-14d079be\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-7c5868c4\"><h3 class=\"uagb-heading-text\">H21 (1,2581)<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">El H21 se utiliza en entornos de fundici\u00f3n a altas temperaturas, como en el caso de las aleaciones de lat\u00f3n y cobre, donde el ablandamiento t\u00e9rmico se convierte en el principal modo de fallo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Su alto contenido de tungsteno le permite mantener la dureza a temperaturas elevadas, donde el H13 comenzar\u00eda a perder resistencia. Esto reduce significativamente la deformaci\u00f3n y el desgaste bajo calor extremo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sin embargo, el H21 tiene baja resistencia y es sensible al choque t\u00e9rmico. No es adecuado para sistemas de refrigeraci\u00f3n por agua ni para ciclos de funcionamiento r\u00e1pidos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El rango de dureza t\u00edpico es de 40 a 44 HRC.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Enviar consulta ahora<\/a><\/div>\n\n\n\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-outline is-style-outline--3\"><a class=\"wp-block-button__link has-ast-global-color-3-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/aobosteel.com\/es\/h21-tool-steel\/\" style=\"background-color:#ffffff00\">Ver detalles de suministro de H21<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-14d079be\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-8f95b674\"><h3 class=\"uagb-heading-text\">P20 (1,2311 \/ 1,2738)<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">El P20 no se suele utilizar para insertos de fundici\u00f3n a presi\u00f3n de alta carga. Su funci\u00f3n es principalmente estructural o est\u00e1 motivada por el coste.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se utiliza com\u00fanmente en bloques de sujeci\u00f3n, insertos grandes de baja tensi\u00f3n o en aplicaciones de aleaci\u00f3n de zinc donde la carga t\u00e9rmica es limitada. Su ventaja radica en la maquinabilidad, la estabilidad dimensional y el menor costo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La dureza t\u00edpica es de 28 a 32 HRC (\u2248300 HB), y las variantes de mayor dureza se utilizan selectivamente en aplicaciones de insertos de baja exigencia.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Enviar consulta ahora<\/a><\/div>\n\n\n\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-outline is-style-outline--4\"><a class=\"wp-block-button__link has-ast-global-color-3-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/aobosteel.com\/es\/p20-tool-steel\/\" style=\"background-color:#ffffff00\">Ver detalles de suministro de P20<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Resumen de la selecci\u00f3n pr\u00e1ctica<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Acero para herramientas<\/strong><\/td><td><strong>Fortaleza clave<\/strong><\/td><td><strong>Limitaci\u00f3n<\/strong><\/td><td><strong>Cu\u00e1ndo usar<\/strong><\/td><\/tr><tr><td><strong>H13<\/strong><\/td><td>Resistencia a la fatiga t\u00e9rmica y tenacidad equilibradas.<\/td><td>No est\u00e1 optimizado para temperaturas extremas ni concentraciones de estr\u00e9s severas.<\/td><td>Insertos de fundici\u00f3n a presi\u00f3n de Al\/Mg\/Zn de uso general<\/td><\/tr><tr><td><strong>H11<\/strong><\/td><td>Mayor tenacidad, mejor resistencia al agrietamiento.<\/td><td>Menor resistencia en caliente que H13<\/td><td>N\u00facleos peque\u00f1os, complejos o sometidos a altas tensiones.<\/td><\/tr><tr><td><strong>H21<\/strong><\/td><td>Dureza superior a altas temperaturas<\/td><td>Baja resistencia, sensible al choque t\u00e9rmico<\/td><td>Fundici\u00f3n de lat\u00f3n\/cobre con alta carga t\u00e9rmica<\/td><\/tr><tr><td><strong>P20<\/strong><\/td><td>Rentable y f\u00e1cil de mecanizar<\/td><td>Rendimiento limitado a altas temperaturas<\/td><td>Bloques de sujeci\u00f3n o aplicaciones de zinc de baja carga<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Gu\u00eda para la decisi\u00f3n final<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La selecci\u00f3n de materiales debe comenzar por analizar c\u00f3mo fallan los insertos durante la producci\u00f3n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Si el fallo se debe principalmente al agrietamiento por calor y a la degradaci\u00f3n de la superficie, el H13 ofrece el rendimiento general m\u00e1s estable.<\/li>\n\n\n\n<li>Si los insertos fallan por agrietamiento, especialmente en secciones delgadas o complejas, cambiar de H13 a H11 suele ser m\u00e1s efectivo que aumentar la dureza.<\/li>\n\n\n\n<li>Si se produce deformaci\u00f3n o erosi\u00f3n a altas temperaturas, ser\u00e1 necesario actualizar a H21, siempre que se pueda controlar el choque t\u00e9rmico.<\/li>\n\n\n\n<li>Si la carga t\u00e9rmica es baja y la prioridad es la reducci\u00f3n de costes, el P20 es suficiente para componentes no cr\u00edticos.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-\">En Aobo Steel, estos grados se suministran en estado recocido o pretemplado para su adquisici\u00f3n a granel, lo que permite a los distribuidores y fabricantes realizar el mecanizado y el tratamiento t\u00e9rmico final seg\u00fan sus propios requisitos de herramientas.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Selection of Tool Steel for Die Casting Cores and Inserts Cores and inserts are typically the first components to fail in die casting tooling. Their lifespan directly determines maintenance frequency, tooling cost, and production downtime. During operation, molten metal enters the cavity under pressures of 20\u2013150 MPa, with extreme cases reaching 700 MPa. At the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","_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":"","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-12376","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Die Casting Tool Steel Selection Guide for Cores &amp; Inserts | Bulk Supply<\/title>\n<meta name=\"description\" content=\"A practical selection guide for die casting tool steel. 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Their lifespan directly determines maintenance frequency, tooling cost, and production downtime. During operation, molten metal enters the cavity under pressures of 20\u2013150 MPa, with extreme cases reaching 700 MPa. At the&hellip;","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Selection of Tool Steel for Die Casting Cores and Inserts Cores and inserts are typically the first components to fail in die casting tooling. Their lifespan directly determines maintenance frequency, tooling cost, and production downtime. During operation, molten metal enters the cavity under pressures of 20\u2013150 MPa, with extreme cases reaching 700 MPa. 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