AISI H13 (SKD61): Hot Work Werkzeugstahl for Die Casting and Forging Dies
ASTM A681 · Published: 2026-06-03 · Updated: July 2026
AISI H13 is the most widely used hot work tool steel — the standard material for aluminum die casting dies, extrusion tooling, and forging dies. Its 5% chromium and 1.3% molybdenum content provides high hot hardness, resistance to thermal fatigue...
AISI H13 ist der meiste widely used heiß arbeiten werkzeug steel — der standard material für aluminum die casting dies, extrusion tooling, und forging dies. Sein 5% chromium und 1.3% molybdenum content provides hoch heiß hardness, widerstand zu thermal fatigue cracking (heat checking), und gut toughness bei elevated temperatures.
Quick Facts
| Kategorie | Werkzeugstahl |
| Norm | ASTM A681 |
| Density | 7.80 g/cm³ |
| Yield Strength | 1,350-1,580 MPa |
| Tensile Strength | 1,520-1,780 MPa |
Global Equivalents & Cross-Reference
Verwandt Materials
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Frequently Asked Questions
Was causes heat checking in H13 dies und wie können es sein minimized?
Heat checking ist caused durch cyclic thermal stress — der die surface rapidly heats wenn molten aluminum contacts es, dann cools während spray release. Differential thermal expansion creates tensile stress bei der surface das eventually forms ein crack network. Mitigation: (1) maintain uniform die preheat zu 200-250°C, (2) verwenden premium H13 (ESR/VAR remelted) mit unter sulfur und inclusion content, (3) nitride der die surface zu introduce compressive residual stress.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu