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.ATLAS BRAKE DIE is an electric furnace alloy steel specifically designed to provide the optimum balance of strength, wear resistance and toughness desired in brake-die applications. It is normally furnished in the heat treated and stress-relieved condition.