D507MoNb valve welding electrodes Model: EDCr-A1-15 surfacing hardness HRC: (after welding, air-cooled) ≥ 37 
 Description: 1Cr13 high-chromium steel welding electrode valve, using DC reverse, adding the right amount of coating molybdenum, niobium and other elements of strength, so the deposited metal has good resistance to high temperature oxidation and crack resistance. 
 Uses: working temperature below 450 ℃ in the sealing surface of the welding low pressure valves.