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.Alloy 7055 extruded products in the T74511 and T76511 tempers have a combination of high strength, excellent corrosion resistance, toughness, fatigue, and formability. The alloy was developed as an advance over aluminum alloys 7178 and 7075.