描述
特点
LSF-39 is an active flux. It is designed for butt or fillet welding on sheet metal with nice bead appearance, porosity resistance and good slag forming and removing and improved toughness. prevent porosity during welding. It is recommend for single pass welding steel plate under 25 mm thick.
应用：
Typical applications include pressure vessels, H beam, pipe-mill application, shipbuilding, LPG Tank and general steel structure.
使用说明：
1. Dry the flux at 350℃ for 60 minutes before use
2. Not recommended to welding more than two passes.
分类：
AWS A5.17 F7A2-EM12K
焊接金属的典型化学成分（wt%）
| C | 锰 | Si | P | S |
| 0.09 | 1.33 | 0.6 | 0.015 | 0.010 |
焊接金属的典型机械性能
| YP N/mm2 | TS N/mm2 | EL % | IV -20ºC J |
| 436 | 533 | 27.5 | 67 |
尺寸和推荐电流范围 ( DC+)
| 导线直径（毫米） | 2.4 | 3.2 | 4.0 |
| 线材：每卷重量（千克） | 25 | 25 | 25 |
| 助焊剂： 每袋重量（千克） | 25 | 25 | 25 |
