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.J&L type 201LN is an austenitic chromium-nickel-manganese stainless steel with a lower carbon content and with added nitrogen compared to J&L type 201 (see Alloy Digest SS-768). Type 201LN work hardens to high tensile strengths while maintaining good toughness, even to cryogenic temperatures.