- Applications
- WT-70 is designed for welding of 50kgf/mm² class high tensile steel. Building, shipbuilding, bridges, machinery, vehicles, offshore structures and general fabrications.
- Characteristics on Usage
-
- - WT-70 has very efficient welding due to higher deposition rate.
- - It is used for joining from mild tensile steels to 590MPa class high tensile steels, and is suitable for both fillet and butt welds.
- Notes on Usage
-
- - Proper preheating(50~150°C) 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 or Ar+20~25% 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 |
0.05 |
1.43 |
0.64 |
0.012 |
0.011 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : CO2)
-
ypical Mechanical Properties of All-Weld-Metal
Y.S MPa |
T.S MPa |
EL(%) |
CVN-Impact Value J (-20℃) |
538 |
580 |
27 |
66 |
- Welding position
- Approved by
- KS, JIS