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.Ovako 42CrMo4 is a quenched-and-tempered steel with high strength and good toughness. The alloy is also available with increased sulfur content to improve machinability.