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. C90900 is a cast copper-tin alloy which also is known by names formerly used (but not recommended): Tin Bronze, 199 and 87-13-0-0. It is a medium-strength alloy and has a good combination of strength, ductility and resistance to corrosion. Its uses include bearings, bushings, valves, nuts and marine hardware.