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.ZA-27 is the strongest, hardest and lightest of the three-member ZA alloy group (see also Alloy Digests Zn-48 and Zn-49). Mechanical properties of ZA-27 compare favorably with many heavier more costly (manufacturing intensive) alloys such as malleable and ductile iron, manganese and aluminum bronzes and many ferrous and non-ferrous wrought alloys.