- Applications
- Tack welding of 490MPaclass high tensile strength steels in ships, bridges, buildings.
- Characteristics
-
- - It is a low hydrogen type electrode, makes easier re-arcing.
- - Then it gives an excellent tack welding performance.
- - When a proper welding current is set, it makes welding possible includingvertical down welding.
- Notes on Usage
-
- - Dry the electrodes at 300~350°C for 30~60 minutes before use.
- - Adopt backstep method or strike the arc on a small steel plate prepared for this particularpurpose to prevent blowholes at the arc starting.
- - Keep the arc as short as possible.
- Sizes Available and Recommended Currents ( AC or DC ± )
-
Sizes Available and Recommended Currents ( AC or DC ± )
| Dia. (mm) |
2.6 |
3.2 |
4.0 |
5.0 |
6.0 |
| Length (mm) |
350 |
350 |
400 |
400 |
450 |
Current
(A) |
F |
50~80 |
90~130 |
130~180 |
180~240 |
250~300 |
| V-up & OH |
50~80 |
80~120 |
110~170 |
150~200 |
- |
- Typical Chemical Composition of All-Weld Metal (wt%)
-
Typical Chemical Composition of All-Weld Metal (wt%)
| C |
Mn |
Si |
P |
S |
| 0.08 |
0.72 |
0.33 |
0.011 |
0.009 |
- Typical Mechanical Properties of All-Weld-Metal
-
Typical Mechanical Properties of All-Weld-Metal
| Y.S MPa |
T.S MPa |
EL(%) |
CVN-Impact Value J
(-30℃) |
| 462 |
540 |
32 |
110 |
- Welding positions
