- Applications
- WT-71W is designed all position welding of 490MPa weather-proof steels.
- Characteristics on Usage
-
- - The weld metal contain Cr- Ni- Cu alloys and has good weather-proof properties.
- - It is a titania type of flux cored wire for all-position welding.
- - It provides smooth arc, low spatter levels, good weldability and good bead appearance.
- 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.
- - One-side welding defects such as hot cracking may occur with wrong welding parameter such as high welding speed.
- - Gas flow rate is proper 20~25â„“/min.
- - 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 |
180~300A |
180~340A |
200~380A |
HF |
180~300A |
180~340A |
200~380A |
V-up, OH |
160~260A |
160~280A |
180~280A |
- 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 |
Ni |
Cu |
0.05 |
1.10 |
0.53 |
0.014 |
0.011 |
0.55 |
0.48 |
0.42 |
- Typical Mechanical Properties of All-Weld-Metal (Shielding gas : CO2)
-
Typical Mechanical Properties of All-Weld-Metal
Y.S MPa |
T.S MPa |
EL(%) |
CVN-Impact Value J (-20℃) |
510 |
580 |
28 |
42 |
- Welding position