THYSSEN S7 is a chrome-moly steel with a high combination of toughness and wear resistance, together with case of machining and heat treatment. It is used for both cold and hot tool applications as the result of its combination of properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: TS-519. Producer or source: Thyssen Specialty Steels Inc.