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.Nirosta 4315 is an austenitic stainless steel of the 18Cr-10Ni-type strengthened with nitrogen. The alloy possesses much the same corrosion resistance as Type 304, but maintains higher strength and toughness.