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.AL Tech 416 EZR is one variation of AISI Type 416, the free-machining martensitic stainless steel that has been one of the staples of the automatic machining industry. It offers higher machinability than Type 416 EZ (Alloy Digest SS-665), but is not recommended for bright hardening.