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.Uddeholm HOLDER is a free-machining chromium-molybdenum alloyed tool steel supplied in the prehardened condition. Applications include parts and molds for plastic and rubber.