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.BETHALLOY is a low-alloy oil-hardening tool steel. Because of its relatively low carbon content (for tool steels), it has slightly better shock resistance than more highly alloyed types and may be used wherever wear resistance can be sacrificed for moderately increased toughness.