Twenty-years experience Pass ISOHigh intensity hardness toughness hardenability Incision smooth Long service life The materials has a wide range of 5CrW2Si, 6CrW2Si, Cr12MoV, 9CrSi and H13.Even early in 1996,the company established its R&D department and developed independendly H13K, HMB, HMK and HMA high alloy series with the features of high intensity, high hardness, high toughness, and high ...