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.FEDERATED F1121 Ni is a heat-treatable aluminum-silicon-nickel-copper-magnesium alloy used for high-strength permanent-mold castings. It can be solution treated and aged, or the as-cast material can be aged to increase hardness and strength. Its uses include pistons and pulleys.