- Applications
- WT-91K2 is designed for welding of 620MPa high tensile steel for low temperature service.
Typical applications include offshore structures, LNG and LPG carriers and storage tank.
- Characteristics on Usage
-
- - It is a titania type of flux cored wire for all-position welding.
- - The weld metal contain about 1.5%Ni, so good impact value at low temperatures down to -60℃.
- - It features good porosity resistance and easy slag removal.
- 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 |
V-up, OH |
120~220A |
140~260A |
160~280A |
- 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 |
0.05 |
1.24 |
0.38 |
0.013 |
0.011 |
1.55 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : CO2)
-
용착금속의 기계적 성질의 일례
Y.S MPa |
T.S MPa |
EL(%) |
CVN-Impact Value J (-60℃) |
603 |
645 |
27 |
83 |
- Welding position
- Approved by
- JIS