Description
Characteristics:
LFC-711Ni is a flux-cored wire design to be use with CO₂ gas. It can be used on all-position welding on 490N/mm² high tensile steel. With stable arc, less spatter, easy slag removal and excellent X-Ray inspection. It provides good low-temperature impact value due to 0.4%Ni in weld metal.
Applications:
It is widely used for shipbuilding, vessels, piping, off-shore plateform, low temperature service storage tanks, etc.
Notes on Usage:
1. Use DC(+) polarity.
2. Use C0₂ as shielding gas.
3. In order to get enough penetration in the down hand weld position, maintain a little bit higher welding speed by stringer manipulation for the first pass.
4. Keep dry during handling and storage.
Classification:
AWS A5.20 E71T-1CJ/9CJ
EN EN758 T 42 4 P C 1
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Ni |
| 0.05 | 1.35 | 0.43 | 0.018 | 0.009 | 0.45 |
Typical mechanical properties of weld metal
| YP N/mm2 | TS N/mm2 | EL % | IV -40°C J |
| 515 | 575 | 29 | 80 |
Sizes and recommended current range ( DC+)
| Diameter (mm) | 1.2 | 1.6 |
| Voltage(Volt) | 25-32 | 25-40 |
| Current(Amp) | 130-300 | 200-400 |
| Stick out(mm) | 15-25 | 20-30 |
| Flow rate(l/min) | 15-25 | 20-25 |
| Weight per spool(kg) | 15 | 15 |
