D822 cobalt-based electrodes 
 Model: GB / T EDCoCr-C-03 rather: AWS ECoCr-C JIS DF-CoCrC 
 Description: The high-carbon cobalt-chromium alloy welded tungsten welding electrode core cobalt-based, using DC reverse, slag coverage is good, beautiful appearance, with excellent wear resistance, heat resistance, corrosion resistance, high temperature at 650 ℃ can be maintained these characteristics. 
 Uses: cone bit bearing, rotating impeller boilers, mill edge, wear parts such as screw feeder surfacing. 
 Surfacing hardness HRC: ≥ 53