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.BRUSH Alloy 25 attains the highest strength and hardness of any copper-base alloy. In the age-hardened condition, its tensile strength can exceed 200,000 psi and its Rockwell C hardness can reach 45. Its many applications include springs, deep-drawing parts, current-carrying springs connectors.