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 520.0 is an aluminum-magnesium casting alloy containing nominally 10% magnesium. It is characterized by an excellent combination of machinability, mechanical properties and resistance to corrosion. Typical applications are railroad passenger car frames and marine parts.