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.Alcan 143 is a copper-silicon type aluminum die casting alloy having excellent fluidity, castability and improved machinability. It is recommended for pressure-tight castings.