SEMINOLE is a chromium-tungsten alloy steel combining great toughness in the hardened condition with a high degree of strength and hardness for hot and cold work tools. It is supplied in two grades namely, Medium and Hard. 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-88. Producer or source: Allegheny Ludlum Corporation.