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. 922 is a cast copper-tin-zinc-lead alloy formerly identified as Navy M or 88-6-1.5-4.5 alloy. It possesses a good combination of machinability, strength and resistance to corrosion. Alloy No. 922 is a good material to use in castings subject to liquid or gas pressures. Its many uses include valves, piston rings and pump impellers.