View Sample Alloy Digest Data Sheet (PDF)Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.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.