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.AMPCOLOY 525 is a cast copper-nickel alloy to which norminally 1.5% iron has been added to increase its resistance to corrosion by salt water. It is recommended where superior corrosion resistance. weldability and mechanical properties are required. Among its many uses are parts that must be resistant to seawater, steam fittings and chemical processing equipment