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 S P 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 
 Pilot 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. 
 Welding position: