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. C90700 is a cast copper-tin alloy known also by names formerly used (but not recommended): Tin Bronze, 205 and 89-11. It is a medium-strength alloy and has a good combination of strength, ductility and resistance to corrosion. Among its many uses are gears, bearings, bushings and marine hardware.