... China Patent for Invention Self-developed H13K,HMB and HMKhigh alloy steel BladeLinear guideway, shear blade, circular knives and spacers, ... , 5 Materials:5CrW2Si, 6CrW2Si, Cr12MoV, 9CrSi, H13,and self-developed H13K,HMB and HMK high alloy series 6 Features:High intensity, high ... 4f.m/cm2Applicable to cut high strength section steel and alloy platesEach one of the four cutting edges of high strength ...