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.INCO Alloy MS 250 is a cobalt-free managing steel with nominal yield strength of 250,000 psi, fully heat-treated. Strengthening results from intermetallic-compound precipitation in a low-carbon martensitic matrix. It has excellent weldability.