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.Aluminum A-140 is a non-heat treatable casting alloy having high tensile and fatigue strength at elevated temperatures to 600 F. It is recommended for engine cylinder heads, aircraft and missile components.