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.CARPENTER LOW EXPANSION 42 DUMET CORE ROD possesses a nearly constant expansion rate to 650 F. Use is as a core rod in copper coated wire.