CPM Rex 86 is a super high speed steel (HSS) produced by the Crucible Particle Metallurgy (CPM) process that exhibits an excellent combination of high attainable hardness capability (68-70 HRC), red hardness, and abrasive wear resistance for difficult machining applications. The composition is designed to provide an optimum balance of vanadium-rich MC and tungsten-molybdenum-rich M6C primary carbides in the heat treated microstructure for enhanced wear resistance, while still maintaining good fabricating and toughness characteristics compared to other
super HSS with similar at tainable hardness capability.

CPM Rex 86 may also be considered for cold work tooling or precision wear parts requiring a combination of excellent wear resistance and high attainable hardness.