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.Durichlor is a high silicon iron for corrosive services, especially in the handling of hydrochloric acid in all concentrations. It is also very resistant to most chlorine gas and many destructive chloride-containing solutions. Superchlor is identical, except the alloy is vacuum treated.