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.Wieland-K65 is an alloy originally developed near 1970 and used as a carrier material for integrated circuits. It is characterized by high conductivity, good corrosion resistance, and very high strength. In 1990, it accounted for nearly 50% of the leadframe volume in the world.