Characteristics:
LFC-811B2 is a gas-shielded and rutile flux cored wire intended for 1-1.25%Cr-0.5%Mo low alloy steel. Use 100% CO2 shield gas.With good weldability ,stable arc, less spatter and good bead appearance in all position welding.
Applications:
It is suitable for welding Cr-Mo steel pipe and Cr-Mo steel with requiring high creep resistance.
Notes on Usage:
- Use DC(+) polarity.
- Use 100% CO2 shielding gas.
- Pre-heat at 150-300ºC and PWHT at 620-720ºC.
Classification:
AWS A5.29 E81T-B2C
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Mo | Cr |
| 0.06 | 0.85 | 0.42 | 0.014 | 0.008 | 0.55 | 1.17 |
Typical mechanical properties of weld metal
| YP N/mm2 | TS N/mm2 | EL % | PWHT |
| 560 | 640 | 23 | 690 ºC 1 Hr |
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 |
