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.Magnesium-HK31A is a magnesium-thotium-zirconium wrought alloy that can be hear treated for improved mechanical properties above 500 F. It has good high temperature creep resistance and is recommended for elevated temperature service.