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.Alloy C7025 is a second generation, high performance alloy whose strength comes from an age hardening heat treatment similar to that used for the beryllium coppers. With stress relaxation resistance comparable to Be-Cu alloys C170/C172 (see Alloy Digest Cu-615 and Cu-621) and conductivity almost double that of brass, C7025 is well suited to high-reliability connector applications.