- Applications
- WT-91B9 is designed for welding of 9%Cr-1%Mo-V steel used for high pressure vessels, oil refining industries etc.
- Characteristics on Usage
-
- - It is a rutile type flux cored wire for all-position welding.
- - It has easy slag removal and good weld soundness.
- - The weld metal contain about 9%Cr-1%Mo-V, so excellent creep rupture strength.
- Notes on Usage
-
- - Gas flow rate is proper 20~25ℓ/min.
- - Shielding gas should be used Ar+20~25%CO2.
- - Preheat at 200~300℃ and PWHT at 760℃.
- Sizes Available and Recommended Currents ( DC + )
-
용착금속의 기계적 성질의 일례
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 : MIX)
-
Typical Chemical Composition of All-Weld-Metal (wt%)
C |
Mn |
Si |
Cr |
Ni |
Mo |
V |
Nb |
0.09 |
0.66 |
0.20 |
9.1 |
0.49 |
1.0 |
0.20 |
0.05 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : MIX)
-
Typical Mechanical Properties of All-Weld-Metal (Shielding gas : MIX)
Y.S MPa |
T.S MPa |
EL(%) |
PWHT |
635 |
710 |
22 |
760℃×2hr |
- Welding position