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.AISI 1118 is a resulfurized carbon steel for applications requiring a free-machining carburizing steel. Its relatively high manganese content provides increased hardenability in all applications and increased hardness and strength in uncarburized uses and in the core of carburized components.