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.Alloys 6605 and 6105 belong to the 6xxx series of aluminum alloys. They are medium strength alloys and are used as structural members such as handrails and ladders.