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 6070 is a high-strength, heat-treatable extrusion alloy. It was developed for structural applications. It has high resistance to general corrosion and stress-corrosion cracking. Its many applications include marine hardware, electric-transmission towers and bridges.