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.Colmonoy 730 is a tough Ni-Cr-W matrix alloy that holds extremely hard tungsten-carbide particles with a finer mesh tungsten carbide than Colmonoy 750 (see Alloy Digest Ni-546). The alloy is used on pump plungers and sleeves for protection from fine-particulate abrasive conditions. Colmonoy 730 minimizes packing wear. The alloy is finished by grinding.