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 3450 (formerly MBCo. Alloy 212) is a high-lead brass alloy noted for its excellent thread-rolling and knurling properties. Its machinability approaches that of free-cutting brass. It is used for screw-machine applications where both good cutting and cold-forming characteristics are desired. Typical applications are valve stems, gears and flare fittings.