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.DOWMETAL AZ91C is a heat treatable magnesium base alloy suitable for sand and permanent mold castings. It combines good tensile strength and yield strength with good elongation and is used in both the solution heat treated condition (T4) and in the solution heat treated plus artificially aged condition (T6).