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.CARPENTER STAINLESS TYPE 440F is a high-carbon chromium steel designed to provide stainless properties with maximum hardness. It is free-machining, easy to grind and polish, and has certain nongalling and noseizing properties in metal-to-metal contact. After austenitizing and quenching in oil, it shows a hardness of about Rockwell C 60. Carpenter Stainless Type 440F is used for machined parts which require higher hardness than possible with other free-machining grades of stainless steel. Type 440F usually is not recommended for vessels containing gases or liquids under high pressures.