The ASTM Steel standard groups Cold Work Tool Steel into four main types. The “W” series hardens in water. The “O” series hardens in oil. The “A” series is a medium alloy that air hardens. The “D” series has high carbon and chromium. Examples include W1, W2, W5; O1, O2, O6, O7; A2 to A11; and D2, D3, D4, D5, D7.
1.2379 Steel (D2)
Wr. 1.2379 steel is a high carbon, high chromium tool steel (12% chrome) with extremely high wear-resisting properties, heat treatable to 60-62 Rc.
1.2080 Steel (D3)
2080 steel has very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable.
Cr12MoV Steel
Cr12MoV is a Chinese steel grade, whereas AISI D2 is an American steel grade. Cr12MoV and AISI D2 are similar in that they are both high-carbon, high-chromium steel alloys with good wear resistance and toughness.
DC53 Steel
DC53 steel is a new cold work die and mold steel that offers strength and durability comparable to high-speed steels.
1.2767 Steel
1.2767 steel is a cold work tool steel with excellent hardenability and machinability and it can also be air-cooled and hardened.