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. 350 is a medium-leaded brass containing 0.8-1.4 lead. Its machinability is 70% of that of free-cutting brass. It is suitable for use in high-speed screw machine work and has many uses such as lock parts, templates, nuts and gears.