... , Cr12MoV, 9CrSi, H13, H13K HMB and MHK and self-developed HMB and HMK high alloy series which have been rewarded the national invention ... patents.6 With the features of high intensity, high hardness, high toughness, and ... 8 Widely used in industries of steel, rubber, papermaking, and so on. 9 Each technical index reaches the international standard ...