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.Sulzer Metco 8500 is a nickel-chromium alloy wire for electric arc spraying. The nominal composition is Ni-45Cr, and applications are in the protection of power-plant boiler tubes.