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.ASTM A588 covers low strength, high-alloy steel grades. They are used primarily in boldly exposed situations, architecturally without painting. These steels are commonly referred to as weathering steels.