描述
特点
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.
应用：
It is widely used for general fabrication and structural weldment where high deposition with good penetration and/or fast travel speed is need.
使用说明：
1. Use DC(-) polarity.
2 .Keep dry while in storage and delivery.
分类：
AWS A5.20 E70T-7
EN EN758 T 42 Z W N 3
Welding Position:
焊接金属的典型化学成分（wt%）
| C | 锰 | Si | P | S | Al |
| 0.28 | 0.45 | 0.15 | 0.016 | 0.005 | 1.50 |
焊接金属的典型机械性能
| YP N/mm2 | TS N/mm2 | EL % |
| 450 | 630 | 26 |
尺寸和推荐电流范围 ( DC+)
| 直径 (毫米) | 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 |
| 每卷重量（千克） | 15 | 15 |
