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.JS Alloy 255 is a duplex ferritic-austenitic stainless steel. It has been designed to provide a superior combination of high stength and excellent corrosion resistance for a wide variety of applications.