Model 822. Cobalt-based electrode material 822. Co-based WELD core diameter 3.2.4.0.5.30 (mm) Model 842 Material C Si Mn Cr Fe W Co type of welding electrodes welding core diameter of 3.2/4.0 (mm) diameter 3.2/4.0 (mm) length 350-400 (mm) D802 D802 cobalt welding electrodes welding cobalt chromium tungsten alloy core cobalt welding electrodes, the use of DCRP, deposited metal at 650 ℃ work wear resistance can be maintained even and corrosion resistance for the required work at about 650 ℃ still maintain a good occasion wear and corrosion resistance, or resistance to impact and hot and cold cross the site, such as the welding temperature and high pressure valves and thermal cutting edge such as chemical composition of deposited metal /% C-0.70 ~ 1.40 Si ≤ 2.0 Mn ≤ 2.0 Cr-25.0 ~ 32.0 Fe ≤ 4.0 W-3.0 ~ 6.0 ≤ 4.0 Co-margin other surfacing hardness HRC ≥ 40 D812 cobalt-based reactor Tungsten welding electrode D812 cobalt-chromium alloy cobalt-based hardfacing welding rod core, the use of DCRP, deposited metal work at 650 ℃ can maintain good wear resistance and corrosion resistance for high temperature and high pressure valves, high pressure pump shaft sleeve and the lining sleeve and the cut edge of the mouth of brazing equipment, such as chemical composition of deposited metal /% C-1.00 ~ 1.70 Si ≤ 2.00 Mn ≤ 2.00 Cr-25.0 ~ 32.0 Fe ≤ 5.0 W-7.0 ~ 10.0 Other ≤ 4.0 Co-margin surfacing hardness HRC ≥ 44 D822 Cobalt Hardfacing Electrodes