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.DYNA-LOY 41L43 is a cold-drawn alloy steel developed for those applications that require excellent machinability along with a hardness range of Rockwell C 33 to 55. Its chemical composition permits maximum machinability and good surface finish for the tensile strength range 150,000 to 280,000 psi. It is recommended for a wide range of uses such as gears, bushings and fasteners.