Description
Characteristics:
LFC-711M is a flux-cored wire design to be use with Ar/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:
1. Use DC(+) polarity.
2. Use 75-85%Ar + 25-15%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.
Classification:
AWS A5.20 E71T-1M/9M
EN EN758 T 46 2 P M 1 H10
JIS Z3313 YFW-A502R
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S |
| 0.05 | 1.25 | 0.45 | 0.015 | 0.007 |
Typical mechanical properties of weld metal
| YP N/mm2 | TS N/mm2 | EL % | IV -29°C J |
| 540 | 590 | 28 | 95 |
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 | 20-25 |
| Weight per spool(kg) | 15 | 15 |
