D2 Tool Steel

UNS T30402 tool_steel
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High-carbon, high-chromium cold-work tool steel with excellent wear resistance and good dimensional stability during heat treatment. Standard die steel for blanking and forming.

Applicable Standards

  • ASTM A681
  • AMS 2312
  • DIN 1.2379
  • JIS SKD11

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
Fe 82.0 88.0 ~85.0
Cr 11.0 13.0 ~12.0
C 1.4 1.6 ~1.5
Mo 0.7 1.2 ~0.95
V 0.5 1.1 ~0.8
Mn 0.1 0.6 ~0.35
Fe 82.0–88.0% Cr 11.0–13.0% C 1.4–1.6% Mo 0.7–1.2% V 0.5–1.1% Mn 0.1–0.6%

Typical Applications

  • Blanking and punching dies
  • Forming and bending dies
  • Slitting blades
  • Gauge and wear plates
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