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.CERAMVAR is an iron, nickel, cobalt alloy specially designed and suited for ceramic-to-metal sealing. It has expansion characteristics closely matching those of high temperature alumina ceramics.