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.ALZ 321 is an austenitic stainless steel with good cold formability, corrosion resistance, toughness, and mechanical properties. The addition of titanium improves the resistance to intergranular corrosion in welds and slower cooling sections.