- Applications
- WT-91B3 is designed for welding of 2.25%Cr-1.0%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 provides smooth arc, low spatter levels, good weldability and good bead appearance.
- - The weld metal contain about 2.25%Cr, 1.0%Mo, so it has good crack and heat resistance.
- Notes on Usage
-
- - Gas flow rate is proper 20~25ℓ /min.
- - Shielding gas should be used 100% CO2
- - Preheat at 150~300℃ and PWHT at 690℃.
- 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 |
Cr |
Mo |
| 0.06 |
0.62 |
0.48 |
0.019 |
0.010 |
2.30 |
1.05 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : CO2)
-
Typical Mechanical Properties of All-Weld-Metal
| Y.S MPa |
T.S MPa |
EL(%) |
PWHT |
| 590 |
660 |
22 |
690℃ X 1hr |
- Welding position
