HSS good performance with high wear resistance steel of tungsten With the exclusive nature of hardeness, redhardness High speed steelSKH2(W18Cr4V)is a kind of high-speed steel of tungsten.With the exclusive nature of hardeness, redhardness and hot hardness.Spheroidizing annealing HBS≤255Heat treatmentQuench1270-1285oC oil coolTempering temperature550-570oCHardness>63 HRCSimilar steel gradeUSA ...