A martensitic stainless steel  Welding Electrodes stainless steel containing chromium 5 to 9 percent of chromium steel and high chromium steel containing 12% chromium. Such steel hardened tendency of large, easy to produce high hardness of martensite and bainite to the fragility, the residual stress, prone to cold cracks in the weld. Therefore, general welding must be performed before the warm-up and the interlayer insulation, has not yet cooled high-temperature tempering after welding. , 13 chrome stainless steel welding: the welding of such chromium steel sclerosing large, easy to crack, the use of similar chromium stainless Nickel Electrode(CHK202, CHK207) welding to be carried out more than 300 ℃ preheat and post weld 700 ℃, tempering the slow cooling treatment. Weldments after welding can not be carried out, the application of a chromium stainless steel electrode (CHS107, CHS207) welding. 3, 17 chrome stainless steel welding: These chrome steel is usually to improve the corrosion resistance and weldability and add the right amount of stable element titanium, niobium, molybdenum, can be weldability compared with 13 chromium steel of the same type can be used chrome Stainless steel electrodes (CHK302, CHK307) welding. Before welding, the weldment should be about 200 ℃ preheating, about 800 ℃ tempering after welding. Also can be chrome-nickel stainless steel electrode (such as CHS107 CHS207), post-weld heat treatment.