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 41L49 is a cold-drawn alloy steel recommended for those applications that require a hardness range of Rockwell C 43 to 56 and excellent machinability. Its chemical composition permits maximum machinability and good surface finish for the tensile strength range 175,000 to 300,000 psi. Its many uses include shafts, pipe reamers and special bolts.