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.P/M N690 exhibits isotropic mechanical properties and excellent corrosion resistance. Its high chromium content provides superior resistance to IGSCC. This alloy has superb weldability characteristics as well as minimal mechanical property degradation during extended exposure to elevated temperatures.