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.BETHLEHEM AR-235 is a carbon steel developed primarily to supply a low-cost material for high-abrasion applications. It is furnished in the form of as-rolled plate with a relatively high carbon content (0.35-0.50%). AR-235 is sold on the basis of chemical analysis only; the number 235 signifies the approximate Brinell hardness. On thicknesses over one-half inch, however, this Brinell number may run lower than 235 because of higher finishing temperature.