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 Nos. 113, 114, 115 and 116 are tough pitch coppers containing varying quantities of silver. At ambient temperatures, their properties are the same as those of tough pitch copper. Silver is added to increase the resistance to softening at elevated temperatures.