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.ALLVAC WASPALOY, a nickel-base precipitation hardening alloy derives its high strength through the precipitation of gamma prime as a result of the aluminum and titanium additions and through the solid solution strengthening of other component elements. It is produced by vacuum induction melting followed by consummable vacuum are or electroslag remelting.