Characteristics:
LFC-711 is a flux-cored wire design to be use with CO2 gas. It can be used on all-position
welding with both single and multiple pass welds on mild steels and 490N/mm2 high tensile steel. With
good impact toughness, less fume, stable arc, easy slag removal and excellent X-Ray inspection.
Applications:
It is widely used for shipbuilding, storage vessels, structural fabrication, machinery and piping etc.
Notes on Usage:
- Use DC(+) polarity.
- Use CO2 as shielding gas.
- In order to get enough penetration in the downhand weld position, maintain a little bit higher
welding speed by stringer manipulation for the first pass.
Classification:
AWS A5.20 E71T-1C
EN EN758 T 46 2 P C 1 H10
JIS Z3313 YFW-C50DR
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S |
| 0.037 | 1.30 | 0.42 | 0.020 | 0.010 |
Typical mechanical properties of weld metal
| YP N/mm2 | TS N/mm2 | EL % | IV – 29 ºC J |
| 485 | 555 | 29 | 80 |
Sizes and recommended current range ( DC+)
| Diameter (mm) | 1.2 | 1.6 |
| Voltage(Volt) | 25-40 | 25-40 |
| Current(Amp) | 130-300 | 200-400 |
| Stick out(mm) | 15-25 | 20-30 |
| Flow rate(l/min) | 15-25 | 20-30 |
| Weight per spool(kg) | 15 | 15 |
