Description
Characteristics:
LFC-707 is a self-shield flux-cored wire designed for high penetration welding. With good X-ray inspection, desultfuration reduce cracking in welding thick plates, and constrained joints and mediumcarbon steel. It is suitable for flat, horizontal and downhill position.
Applications:
It is widely used for general fabrication and structural weldment where high deposition with good penetration and/or fast travel speed is need.
Notes on Usage:
1. Use DC(-) polarity.
2 .Keep dry while in storage and delivery.
Classification:
AWS A5.20 E70T-7
EN EN758 T 42 Z W N 3
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Al |
| 0.28 | 0.45 | 0.15 | 0.016 | 0.005 | 1.50 |
Typical mechanical properties of weld metal
| YP N/mm2 | TS N/mm2 | EL % |
| 450 | 630 | 26 |
Sizes and recommended current range ( DC+)
| Diameter (mm) | 2.4 | 2.8 |
| Welding Position | F, HF, VU, VD | F, HF, VU, VD |
| Voltage(Volt) | 26-34 | 28-38 |
| Current(Amp) | 250-400 | 280-450 |
| Stick out(mm) | 40-60 | 40-60 |
| Weight per spool(kg) | 15 | 15 |
