Stainless steel electrode for chromium content greater than 10.50% , nickel content of less than 50% of the corrosion-resistant steel or heat resistant steels , stainless steel should be used according toMaterial, working conditions ( including temperature and contact with the medium ) To choose. Mainly from the following aspects:① In the high temperature environment -resistant stainless steel , selected to meet the welding mainly thermal cracking of weld metal and thewelded joints of high performancePerformance. For the Cr / Ni ≥ 1 austenitic heat-resistant steel, such as1Cr18Ni9Ti, Cr17Ni13W , is normally used austenitic - ferritic stainless steel electrode ; if the Cr / Ni <1 stable austenitic heat-resistant steelSuch as Cr16Ni25Mo6, Cr15Ni25W4Ti2 etc. , should generally be in Bulgaria Permit the weld metal and base metal chemical composition having substantially similar , while increasing weld metal Mo, W, Mn and other elements in order to improve the weldCrack resistance.② work in a variety of corrosive media, the corrosion of stainless steel , should be based on media and temperature to select the electrode. For operating temperature above 3000C, There is a strong corrosive media , the selection of stable containing Ti or NbElements or ultra-low carbon stainless steel electrode ; For media containing sulfuric acid or hydrochloric acid , often used with Mo and Cu oMo-containing stainless steel electrode ; righto work at room temperature , corrosive weak or just avoid rust contamination Equipment , can be used free of Ti or Nb stainless steel electrode.③ of chromium stainless steel , such as martensitic stainless steel 1Cr13, ferritic stainless steel 1Cr17Ti etc., in order to improve the ductility of welded joints , use of chromiumNickel austenitic stainless steel electrode