• Applications
  • WT-81B6 is designed for welding of 5%Cr-0.5% Mo steel used for high pressure vessels, Oil refining industries, steam pipes of boilers etc.
  • Characteristics on Usage
    • - It is a rutile type flux cored wire for all-position welding.
    • - It has excellent creep rupture strength, easy slag removal and good weld soundness.
    • - The weld metal contain about 5%Cr, 0.5% Mo, so it has good crack and heat resistance.
  • Notes on Usage
    • - Gas flow rate is proper 15~25mℓ.
    • - Shielding gas should be used Ar+20~25%CO2.
    • - Preheat at 150~200℃ and PWHT at 745℃.
  • Size Available and Recommended Currents ( DC + )
  • Size Available and Recommended Currents ( DC + )
    Dia(mmØ) 1.2 1.6
    Position
    F Amp 200~340A 300~420A
    HF 200~340A 300~420A
    V-up, OH 160~260A 200~300A
  • Typical Chemical Composition of All-Weld-Metal (wt%) (Shielding gas : MIX)
  • Typical Chemical Composition of All-Weld-Metal (wt%)
    C Mn Si P S Cr Mo
    0.05 0.44 0.58 0.07 0.010 4.55 0.48
  • Typical Mechanical Properties of All-Weld-Metal (Shielding gas : MIX)
  • 용착금속의 기계적 성질의 일례
    Y.S MPa T.S MPa EL(%) PWHT
    558 672 21 745℃×2hr
  • Welding position
  • Welding position