Extremely good impact resistance and good thermal fatigue resistance and stability.Largely for such dies as punching-ejection dies, heading dies and rod reducing dies for making standard bolts.

• 具有极好的抗冲击性和良好的热疲劳性、稳定性,主要用来制作标准螺栓生产用的顶锻模,镦粗模,缩杆模等模具。