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.Lead Babbit comprises a family of alloys used to cut down on friction in moving parts of machines. Alloys 7, 8 and 13 are essentially lead-antimony-tin alloys. Alloy 15 is an arsenical (about 1% arsenic) lead-base alloy.