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.URANUS S1 is the development of 15 years research into alloys containing high silicon contents (4% here) to resist the transpassive intergranular corrosion from such chemicals as concentrated nitric acid.