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.Carpenter No. 1-JR is a low cost oxidation-resistant steel which offers an excellent combination of electrical resistance and scale resistance. It is primarily used as an electrical resistant material, but is also used as a magnetic core material where resistance to oxidation and corrosion are required.