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.NICKEL 290 is a high-purity grade of nickel made by a powder-metallurgy process. Its high purity makes it useful for electronic applications such as components of hydrogen thyratrons and for battery applications. The low annealing temperature of Nickel 290 makes it superior to other forms of nickel as a substrate for precious-metal cladding.