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.VASCO X-2 CVM is a steel designed especially for gears and shafts where a high surface hardness (carburized) and superior hot hardness are desired. It is a vacuum-melted steel and provides an excellent combination of high strength, good toughness and high fatigue strength.