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 236 is a general purpose aluminum casting alloy possessing moderate strength. It is recommended for medium-stressed castings requiring good machinability. It is a non-heat treatable alloy.