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.Sandvik Sanicro 38/4L7 is a composite tube consisting of Sanicro 38, a corrosion-resistant nickel-base alloy on the outside diameter, and carbon steel (A210 GrA-1) for water-wetted service on the inside. The design is placed entirely on the inside tube; however, there is a contribution from both.