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.Boehler Uddeholm alloy BeCu172 is a high-strength beryllium copper mold with high thermal conductivity. BeCu Alloy 172 can be supplied in the high-hard (HH) condition at approximately 40 HRC and in the low-hard (LH) condition at approximately 30 HRC. This alloy is used for applications such as pinch-offs and neck rings for blow molds, cores, and inserts in injection molds and injection nozzles and manifolds for hot runner systems.