HRc≥55.Wearandheatresistanceathightemperature,badshockresistance.Hardfacingofscrewchargingcarriage.HRc≥55，高温下耐磨、耐热，但抗冲击性差。堆焊螺旋送料机用HRc≥55.Wearandheatresistanceathightemperature,badshockresistance.Hardfacingofscrewchargingcarriage.HRc≥55，高温下耐磨、耐热，但抗冲击性差。堆焊螺旋送料机用HRc≥55.Wearandheatresistanceathightemperature,badshockresistance.Hardfacingofscrewchargingcarriage.HRc≥55，高温下耐磨、耐热，但抗冲击性差。堆焊螺旋送料机用HRc≥55.Wearandheatresistanceathightemperature,badshockresistance.Hardfacingofscrewchargingcarriage.HRc≥55，高温下耐磨、耐热，但抗冲击性差。堆焊螺旋送料机用HRc≥55.Wearandheatresistanceathightemperature,badshockresistance.Hardfacingofscrewchargingcarriage.HRc≥55，高温下耐磨、耐热，但抗冲击性差。堆焊螺旋送料机用)