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.Allegheny Ludlum Type 416 stainless steel is a free-machining martensitic stainless steel, which can be hardened by heat treatment to higher strengths. It has better machining properties than the austenitic grades but lower corrosion resistance.