BETHLEHEM HOT WORK 8 alloy is a hot-work tool steel having high wear resistance in the higher range of operating temperatures. It also has high resistance to surface wash and heat-checking. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-3. Producer or source: Bethlehem Steel Corporation.