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.SAE 50B50 is a low-chromium alloy steel with boron added to provide a substantial increase in its hardenability. Its higher hardenability is reflected in higher hardness, especially in the liquid quenched-and-tempered condition. It is used a wide range of machinery and tool applications where its medium hardenability and strength meet the requirements.