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.Copper Alloy no. C90500 is a cast copper-tin-zinc alloy known also by names formerly used (not recommended): Gun Metal, 210, Tin Bronze and 88-10-0-2. It has a good combination of strength and resistance to corrosion. Because of its mechanical properties and corrosion resistance, it is used frequently in castings that are subjected to liquid or gas pressure, such as those in valves, pumps, etc. It also is used for bearings and gears.