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 Types 416 & 416Se are free-maching grades of the low-carbon chromium type stainless steel. The former contains sulphur while the latter contains selenium to produce the free-cutting characteristics.