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.BALL ROLLED ZINC Alloy 809 is a zinc-aluminum-copper alloy that displays maximum strength, hardness and wear resistance among zinc-base alloys. Despite its high strength, it can be machined readily. It does not stain other metals and is used in such applications as keys and tokens.