{"id":12368,"date":"2026-01-22T20:01:06","date_gmt":"2026-01-22T12:01:06","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12368"},"modified":"2026-04-02T15:21:32","modified_gmt":"2026-04-02T07:21:32","slug":"selection-of-tool-steel-for-high-pressure-die-casting-dies","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/selection-of-tool-steel-for-high-pressure-die-casting-dies\/","title":{"rendered":"HPDC Tool Steel Selection Guide | H13 H11 Supplier | Aobo Steel"},"content":{"rendered":"
\n

Selection of Tool Steel for High Pressure Die Casting Dies<\/h1>\n\n\n\n

High-pressure die casting (HPDC) is a high-speed process in which molten metal is injected into a steel die under pressures of 6.9\u2013206.8 MPa (1,000\u201330,000 psi). The cavity fills and solidifies within seconds, exposing the die surface to repeated thermal and mechanical loading.<\/p>\n\n\n\n

During each cycle, the die face undergoes rapid heating upon contact with molten alloy, followed by cooling during part ejection. This creates cyclic compressive and tensile stresses. At the same time, high-velocity metal flow causes surface erosion, while chemical interaction between the molten alloy and the die can result in soldering.<\/p>\n\n\n\n

In practice, die life is determined by which failure mechanism dominates under actual operating conditions\u2014thermal fatigue, erosion, or soldering.<\/p>\n\n\n\n

Factores de selecci\u00f3n<\/h2>\n\n\n\n

Selecting tool steel for HPDC starts with identifying the dominant failure mode, then matching the material to resist it.<\/p>\n\n\n\n

Thermal fatigue (heat checking) is the most common cause of failure. Repeated heating and cooling generate surface cracks that propagate under mechanical stress, eventually leading to spalling or fracture.<\/p>\n\n\n\n

To delay this process, the steel must retain strength at elevated temperatures, meaning it must resist temper softening during cyclic heating. At the same time, sufficient toughness is required to slow crack propagation once cracks initiate.<\/p>\n\n\n\n

These requirements conflict in practice. Increasing hardness improves resistance to erosion and deformation, but accelerates crack growth. Increasing toughness improves crack resistance but reduces hot strength and wear resistance.<\/p>\n\n\n\n

In production, this balance is controlled primarily by selecting hardness within a workable range, rather than by maximizing any single property.<\/p>\n\n\n\n

Aceros para herramientas recomendados<\/h2>\n\n\n\n
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Proveedor de acero para herramientas H13 | 1.2344 | SKD61<\/h3>\n\n\n\n

H13 is the standard choice for aluminum and magnesium HPDC, where no single failure mode dominates.<\/p>\n\n\n\n

Its alloy system provides stable resistance to temper softening, allowing it to maintain strength under repeated thermal cycling. At the same time, its toughness is sufficient to control crack propagation, which is critical for managing heat checking.<\/p>\n\n\n\n

It is typically used at 42\u201352 HRC, a range widely adopted because it provides consistent resistance to both thermal fatigue and plastic deformation under load.<\/p>\n\n\n\n

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Enviar consulta ahora<\/a><\/div>\n\n\n\n
Ver detalles de suministro de material H13<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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AISI H11 Tool Steel | 1.2343 | SKD6<\/h3>\n\n\n\n

H11 is preferred when the cracking risk exceeds the wear risk.<\/p>\n\n\n\n

Compared with H13, it offers higher toughness and better resistance to thermal shock, making it more suitable for large dies or complex geometries where stress concentrations increase the risk of crack initiation.<\/p>\n\n\n\n

It is commonly used at 42\u201350 HRC. The slightly lower hardness improves resistance to crack propagation, potentially extending service life in high-stress areas.<\/p>\n\n\n\n

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Enviar consulta ahora<\/a><\/div>\n\n\n\n
View H11 Material Supply Details<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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AISI H21 Tool Steel | 1.2581 | SKD5<\/h3>\n\n\n\n

H21 is used when the operating temperature is the primary limiting factor.<\/p>\n\n\n\n

Its high tungsten content allows it to retain strength at temperatures where H11 and H13 begin to soften. This makes it suitable for brass and copper die casting, where thermal load is significantly higher.<\/p>\n\n\n\n

The trade-off is lower toughness and higher sensitivity to thermal shock. It is typically used at 38\u201342 HRC to reduce the risk of brittle failure, and improper cooling can significantly increase cracking.<\/p>\n\n\n\n

\n
Enviar consulta ahora<\/a><\/div>\n\n\n\n
View H21 Material Supply Details<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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AISI P20 Tool Steel | 1.2311 | 3Cr2Mo<\/h3>\n\n\n\n

P20 should be considered only for zinc die casting, where the thermal load is relatively low.<\/p>\n\n\n\n

As a pre-hardened steel (28\u201337 HRC), it allows direct machining to final dimensions without additional heat treatment, reducing the risk of distortion and production time.<\/p>\n\n\n\n

However, it lacks the hot strength required for aluminum or magnesium HPDC and is not suitable for those conditions.<\/p>\n\n\n\n

\n
Enviar consulta ahora<\/a><\/div>\n\n\n\n
View P20 Material Supply Details<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n

Tabla resumen<\/h2>\n\n\n\n
Grado de acero para herramientas<\/td>Dureza t\u00edpica<\/td>Primary Advantage for HPDC<\/td><\/tr>
AISI H13<\/td>42\u201352 HRC<\/td>Balanced resistance to thermal fatigue, softening, and deformation<\/td><\/tr>
AISI H11<\/td>42\u201350 HRC<\/td>Higher toughness; better resistance to crack propagation<\/td><\/tr>
AISI H21<\/td>38\u201342 HRC<\/td>Maintains strength at elevated temperatures in high-heat applications<\/td><\/tr>
AISI P20<\/td>28\u201337 HRC<\/td>Pre-hardened; suitable for low-temperature zinc die casting<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Selection of Tool Steel for High Pressure Die Casting Dies High-pressure die casting (HPDC) is a high-speed process in which molten metal is injected into a steel die under pressures of 6.9\u2013206.8 MPa (1,000\u201330,000 psi). The cavity fills and solidifies within seconds, exposing the die surface to repeated thermal and mechanical loading. During each cycle, […]<\/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":"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-12368","page","type-page","status-publish","hentry"],"yoast_head":"\nHPDC Tool Steel Selection Guide | H13 H11 Supplier | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Select the right tool steel for HPDC dies based on failure modes. 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