• Applications
  • WT-90 is designed for welding of 620MPa high tensile steel.
    Typical applications include machineries, shipbuilding, offshore structures, bridges and general fabrications.
  • Characteristics on Usage
    • - It has very efficient welding due to higher deposition rate particularly and also has easy slag removal.
    • - It is used for joining from mild tensile steels to 620MPa class high tensile steels, and is suitable for both fillet and butt welds.
  • Notes on Usage
    • - Proper preheating(50~150℃) and interpass temperature must be used in order to release diffusible hydrogen which may cause cracking in weld metal when electrodes are used for medium and heavy plates.
    • - Shielding gas should be used 100% CO2.
  • Sizes Available and Recommended Currents ( DC + )
  • Sizes Available and Recommended Currents ( DC + )
    Dia(mmØ) 1.2 1.4 1.6
    Position
    F Amp 180~340A 200~360A 200~420A
    HF 180~340A 200~360A 200~420A
  • Typical Chemical Composition of All-Weld-Metal (wt%) (Shielding gas : CO2)
  • Typical Chemical Composition of All-Weld-Metal (wt%)
    C Mn Si P S Ni Mo
    0.05 1.32 0.42 0.012 0.011 0.92 0.17
  • Typical Mechanical Properties of All-Weld-Metal (Shielding gas : CO2)
  • Typical Mechanical Properties of All-Weld-Metal
    Y.S MPa T.S MPa EL(%) CVN-Impact Value J
    (-20℃)
    563 634 26 86
  • Welding position
  • Welding position