(UHB 20C15) Spring Steel Originally designed for ball bearings, this steel provides excellent wear resistance and high fatigue life combined with low corrosion risk. Typical chemistry C 1.00, Si .30, Mn .35, P(max) .020, S(max) .001, Cr 1.45
CPM REX M4 HC(HS) is a high vanadium special purpose high speed steel exhibiting better wear resistance and toughness than m2 or m3 in cold work punches, die inserts and cutting applications involving high speed and light cuts. The high carbon (HC) modification to standard M4 is designed to provide optimum hardening response in larger cross-section tools or in vacuum or atmosphere heat treating. The high sulfur (HS) modification is standard for larger diameter bars, providing enhanced machinability and grindability.
forging steel for beginning and professional knifemakers. Forgiving to
heat treating variances this steel is great for forging a
hi carbon knife or making damascus by layering it with a contrast metal
such as 15N20.