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.FAHRALLOY 2817 is a 28% Cr-16% Ni heat and corrosion resistant casting alloy. It is non-hardenable and corresponds to A.C.I. Type HI alloy.