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.DH2F is a modified H13-type tool steel prehardened to 40 HRC that is free-machining. Applications include dies for plastics and zinc, plunger tips, and die plate strippers.