... coefficient,heat-resistant 3.patent technique,cost effective Specification of nano-ceramic superhard coating gear hob cutter,gear milling cutter,gear ... 2. Brand: YUJIE3. Type: ISO standard,also can produce according to drawings.4. Material: carbide,HSS5.Characteristic: super high wear resistance ... : 400°c,600°c,900°c,700°c,1100°c8.Micro hardness: 2300-3500HVMain products in our company: Carbide tips, ...