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 174 beryllium copper is a new family of proprietary alloys designed to allow denser packaging, miniaturization, higher currents and higher operating temperatures in electrical and electronic applications. It offers improved electrical and thermal conductivity, superior resistance to stress relaxation at elevated temperatures and better formability than competitive alloys, BRUSH ALLOY 174 is the preferred spring material where traditional copper-base alloys are inadequate.