• Applications
  • Bond welding of dissimilar metals such as stainless steel, carbon steel and low alloy steel.
    Welding of stainless clad steel.
  • Characteristics
    • - It is a lime-titania type electrode, has an excellent usability and weldability. Chemical composition of all-weld metal is
      29%Cr-9%Ni.
    • - Owing to the austenite structure containing large contents of ferrite, W 312 has a good crack resistibility.
    • - It is used for welding dissimilar metals and under laying welding of hardsurfacing.
  • Notes on Usage
    • - Keep the arc as short as possible and use currents as low as possible.
    • - Dry the electrodes at 250~300℃(482~572℉) for 60~90 minutes before use.
    • - Preheat the base metal at over 200℃(392℉) to prevent cracking in welding of high alloyed steel, having good hardenability such as tool steel.
  • Sizes Available and Recommended Currents ( AC or DC ± )
  • Sizes Available and Recommended Currents ( AC or DC ± )
    Dia. (mm) 2.0 2.6 3.2 4.0 5.0
    Length (mm) 250 300 350 350 350
    Current
    (A)
    F 30~50 50~80 70~115 100~150 140~190
    V-up & OH 25~45 45~75 60~110 90~140 -
  • Typical Chemical Composition of All-Weld Metal (wt%)
  • Typical Chemical Composition of All-Weld Metal (wt%)
    C Mn Si P S Cr Ni
    0.10 1.49 0.40 0.022 0.010 29.2 9.5
  • Typical Mechanical Properties of All-Weld Metal
  • Typical Mechanical Properties of All-Weld Metal
    T.S (MPa) EL (%)
    802 27
  • Welding positions
  • Welding positions