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.COPPER ALLOY C18090 is a solid solution strengthened strip alloy, 96% minimum copper. It has good electrical conductivity and tensile strength ranging from 60000 psi, annealed to 100000 psi, spring temper.