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.NiMark II is a vacuum melted low-carbon alloy steel in which yield strength in excess of 250,000 psi can be developed. It is readily weldable and exhibits good ductility at high strength levels and excellent notch ductility.