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.LSS HW-108 is a hot work tool steel and an addition to the H10 chemistry group that provides increased resistance to softening at elevated temperatures.