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.NJZ ALLOY No. 25 is a zinc-copper-titanium alloy that offers outstanding high creep resistance and a low coefficient of expansion. It can be severely work hardened. Its applications include architectural building products, sporting equipment components, hardware and automotive trim.