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.Carpenter 20Mo-6 HS is an alloy in the generic family of 6% molybdenum alloys, which are very corrosion resistant. This steel also possesses an excellent resistance to environmental cracking (see Alloy Digest SS-444).