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.UGIMA 4570 is a resulfurized grade with calcium added. The steelmaking is carefully controlled and produces a composition with low-melting-point oxides, which produce a lubricating effect during machining. Gains in the cutting condition of 30 to 70% are typical on computer numerical control (CNC) lathe or classical machine work. The alloy is similar to UGIMA NSU but contains additional copper.