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.Croloy 18 13 3 is a chromium-nickel-molybdenum stainless steel characterized as having high corrosion resistance to certain acidic solutions. It is recommended for paper, chemical, and oil refining industries.