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.INCOLOY Alloy 800H is a wrought austenitic alloy characterized by excellent strength and corrosion resistance at high temperatures. It has higher design strengths than the conventional stainless steels above 1100 F. It is heat treated for optimum creep and stress-to-rupture properties. It is approved for HTGR (High-Temperature Gas-Cooled Reactor) nuclear reactors and is recommended for many other high-temperature applications.