AISI Type D2 is a high-carbon, high-chromium air-hardening tool and die steel capable of great hardness and high resistance to abrasive wear. It is non-deforming and is also somewhat corrosion resistant. This datasheet provides information on composition, hardness, tensile properties, and compressive strength as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-167. Producer or source: Tool steel mills.