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.MUELLER ALLOY 6700 is a high-strength manganese bronze which conforms to CDA No. 670. A series of numbers is used to indicate the temper, i.e. 6700 is soft temper, 6701 is half hard and 6702 is hard.