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.NICROFER 4520 HMo is an austenitic nickel-chromium-iron alloy with increased molybdenum content and additions of columbium (niobium) and copper. It has excellent resistance to corrosion. This alloy is used widely in the chemical and petrochemical industries for components handling sulfuric and phosphoric acids.