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.Udimer A is a vacuum induction melted high strength steel designed to achieve yield strengths in excess of 250,000 psi with conventional thermal treatment while maintaining excellent ductility.