A1002 duplex stainless steel electrodes meet the GB E312-16. 
 Rather AWS E312-16 
 Note: A1002 is the titanium calcium type of dual phase steel electrode, the deposited metal contains 40% ferrite, it has excellent crack resistance. Good welding performance. 

 Usage: for high-carbon steel, tool steel, high temperature steel, armor steel, dissimilar steel welding. 

 Chemical Composition of Deposited Metal (%) Chemical Composition C Mn Si SP Ni Cr 
 Guaranteed value ≤ 0.15 0.5 ~ 2.5 ≤ 0.90 ≤ 0.030 ≤ 0.040 8.0 ~ 10.5 28.0 ~ 32.0 

 Mechanical properties of deposited metal project σb (MPa) δ5 (%) 
 Guaranteed value ≥ 660 ≥ 22 

 Reference current (AC, DC +) electrode diameter (mm) φ2.5 φ3.2 φ4.0 φ5.0 
 Welding current (A) 50 ~ 80 80 ~ 110 110 ~ 160 160 ~ 220 

 Note: 
 1. Welding electrodes shall be subject to 250 ℃ or so before baking 1h. 
 2. As far as possible dc power supply, current is not too large.