... wearing resistance - Technic: EAF+LF+VD, produced high purity and good performance steels. Heat Treatment:- Anneal: 820-880°C, ... cold-punching molds, punches, cold shear knives (shearing hard and thin metals, such as silicon steel sheet), drill sleeve, gauges, ... thread rolling dies, coining dies, screw plates and drawing dies etc., which are small impact load, high wearing ...