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.MUELLER Alloy 3530 (formerly MBCo. Alloy 254) is a high-leaded brass noted for its excellent thread-rolling and knurling properties; it has a machinability rating approaching that of free-cutting brass. Typical applications include adapters, gears and valve stems.