VASCO TUF is an air-hardening die steel ideally suited for cold-work applications requiring good toughness. It has better wear resistance than the shock-resisting tool steels. It achieves a maximum hardness of Rockwell C 58-60 when multiple tempered at 950 F: this means that it can also be used for warm-working applications without losing hardness. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-274. Producer or source: Teledyne Vasco.