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.The Al-2wt.%Cu matrix composite contains 60 vol.% alumina. The aluminum ceramic fiber is Nextel 610, which affects the longitudinal direction, resulting in a high longitudinal specific modulus and a specific strength with good off-axis properties.