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.Incomag Alloy 4 is a direct-melt addition alloy for the production of ductile iron. The addition of this alloy improves the efficient transfer of magnesium to the melt with resulting high recoveries of magnesium.