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.Direct Forge 6069 is a Mg-Si-Cu age-hardenable aluminum alloy. Tensile strength in the T-6 condition is approximately 40% higher than that of 6061 alloy with similar corrosion resistance. Applications include light wall bicycle frames and seamless gas cylinders.