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. C34200 contains nominally 2% lead and has a machinability rating approaching that of Free-Cutting Brass. It is noted for its excellent thread-rolling and knurling properties. It is used for many screw-machine applications and it has good resistance to corrosion in many environments. Its many applications include channel plate, gears, wheels and components for clocks and watches.