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S 112 C1.5 Cr29 W8 Co Rem. HRc45-50. Resistance to wear and corrosion at high-temperature. Hardfacing of valve and hot-rolling pass. HRc45-50,高温下耐磨、耐蚀。堆焊阀门,热轧孔型 ECoCr-B S 113 C2.5 Cr30 W17 Co Rem. HRc≥55. Wear and heat resistance at high temperature, bad shock resistance. Hardfacing of screw charging carriage. HRc≥55,高温下耐磨、耐热,但抗冲击性差。堆焊螺旋送料机用