- Applications
- WT-81B6 is designed for welding of 5%Cr-0.5% 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 has excellent creep rupture strength, easy slag removal and good weld soundness.
- - The weld metal contain about 5%Cr, 0.5% Mo, so it has good crack and heat resistance.
- Notes on Usage
-
- - Gas flow rate is proper 15~25mℓ.
- - Shielding gas should be used Ar+20~25%CO2.
- - Preheat at 150~200℃ and PWHT at 745℃.
- Size Available and Recommended Currents ( DC + )
-
Size Available and Recommended Currents ( DC + )
Dia(mmØ) |
1.2 |
1.6 |
Position |
F |
Amp |
200~340A |
300~420A |
HF |
200~340A |
300~420A |
V-up, OH |
160~260A |
200~300A |
- Typical Chemical Composition of All-Weld-Metal (wt%) (Shielding gas : MIX)
-
Typical Chemical Composition of All-Weld-Metal (wt%)
C |
Mn |
Si |
P |
S |
Cr |
Mo |
0.05 |
0.44 |
0.58 |
0.07 |
0.010 |
4.55 |
0.48 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : MIX)
-
용착금속의 기계적 성질의 일례
Y.S MPa |
T.S MPa |
EL(%) |
PWHT |
558 |
672 |
21 |
745℃×2hr |
- Welding position