D2

UNS #T30402

D2 is an air hardening, high-carbon, high-chromium tool steel possessing extremely high wear resistant properties. It is very deep hardening and is practically free from size change after proper treatment. This tool steel's high chromium content gives it mild corrosion resisting properties in the hardened condition. Available in DeCarb-Free (DCF) bars that are cold finished in the mill prior to shipment, eliminating the need for bark removal by the tool and die fabricator.

Type Analysis

  • Carbon (Nominal) 1.5
  • Silicon (Maximum) 0.3
  • Manganese (Maximum) 0.5
  • Chromium (Nominal) 12
  • Molybdenum (Nominal) 0.8
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 0.9

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Applicable Specifications

  • ASTM A681
  • QQ-T-570

Bar

Flats

Rounds

Square

Billet

Strip

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