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 low carbon steel containing relatively high manganese and sulfur to provide free-machining characteristics. It is resulfurized coarse-grain type of steel. AISI 1118 is commonly used to produce carbunized components and parts but can be used without carburizing for some applications that do not require a hard surface. Among its many uses are bushings, gears, pins, shafts, and nuts and bolts.