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 518.0 is an aluminum die-casting alloy with an excellent combination of high strength and resistance to corrosion. It also has high ductility, good polishing characteristics, poor castability (it is hot short) and excellent machinability. Its uses include marine fittings, ornamental hardware, outboard motor brackets and ornamental automotive parts.