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.SENECA is a tungsten-chromium type of hot work steel having good red hardness and resistance to abrasion. It will withstand high operating temperatures up to 1000 deg. F for long periods. It is a SAE type IV F-2 alloy.