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.Havar is a heat-treatable cobalt-base alloy that provides very high strength. The alloy has excellent corrosion resistance and is nonmagnetic. Applications include pressure diaphragms, power springs, gap spaces in magnetic heads, and target foils in nuclear physics.