Unique tool steel designed from a 440C stainless base analysis with added high carbon and vanadium for exceptionally good wear resistance. Due to it's high vanadium carbide content, the machinability and grindability of the S60V will be slightly more difficult than that of D2 or 440C. Aim hardness is HRC 56-58. A cryo treatment may be added between tempers CPM S60V is a registered trademark of Crucible Industries LLC. Typical chemistry: C 2.15, Mn .40, SI .40, Cr 17.00, Mo 1.00, V 5.50