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. 852 is a free-machining copper-zinc-lead-tin alloy for castings. It is a relatively low-cost alloy with good machining and polishing characteristics and a pleasing yellow color. Having only moderate strength, it is used in a wide range of light-duty applications such as bushings, valves and plumbing goods.