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.ARMCO 20-45-5 is a corrosion resistant nickel-base alloy that is extremely resistant to hot chloride stress-corrosion cracking and has superior resistance to intergranular attack in the sensitized condition.