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.Ferralium® 255 is the original superduplex stainless steel, noted for its unique combination of mechanical properties and resistance to corrosion, erosion, and cavitation.Ferralium 255-SD50 is the latest version of this product, and it has much higher strength than other commercially available superduplex. It has especially low impurities giving improved corrosion resistance, and it is used extensively in the offshore and chemical industries.