Lehigh H is a standard air-hardening type of high-carbon, high-chromium tool steel. It combines maximum abrasion-resistance and fair toughness with a minimum distortion in hardening. It corresponds to SAE Type IID-2 tool steel. This datasheet provides information on composition, hardness, and compressive strength as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-26. Producer or source: Bethlehem Steel Corporation.