D577 valve welding electrodes type: EDCrMn-C-15 surfacing hardness HRC: ≥ 28 
 Description: The high chromium manganese steel surfacing electrode valve, the use of DCRP, deposited metal manganese austenitic high chromium, cold work hardening effect is obvious, excellent scratch resistance, to a certain extent in the temperature hardness, good stability, in conjunction with the D507Mo get a good scratch resistance, crack resistance, no preheating before welding, no heat treatment after welding, good machinability. 
 Uses: 510 ℃ in the following high-pressure valve sealing surface temperature in the valve used in conjunction with D507Mo wear better. 

 D582 stainless steel welding electrode surfacing hardness HRC: HB ≈ 170 
 Description: High-valve sealed stainless steel welding electrodes, up to 120% efficiency, better welding resistance, high current (higher than ordinary stainless steel electrode -20%, 15%), drug-free skin redness cracking, good resistance to intergranular corrosive, AC-DC dual-use, suitable for welding, fillet welding. 
 Uses: valve sealing surface surfacing.