H13 Tool Steel

UNS T20813 tool_steel
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Chromium-molybdenum-vanadium hot-work tool steel with exceptional resistance to thermal fatigue and heat checking. The most widely used die-casting and extrusion die material.

Applicable Standards

  • ASTM A681
  • AMS 2332
  • DIN 1.2344
  • JIS SKD61

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
Fe 90.0 95.0 ~92.5
Cr 4.75 5.5 ~5.12
Mo 1.1 1.75 ~1.43
V 0.8 1.2 ~1.0
Si 0.8 1.2 ~1.0
C 0.32 0.45 ~0.39
Fe 90.0–95.0% Cr 4.75–5.5% Mo 1.1–1.75% V 0.8–1.2% Si 0.8–1.2% C 0.32–0.45%

Typical Applications

  • Aluminium and zinc die-casting dies
  • Extrusion dies
  • Forging dies
  • Hot shear blades
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