Description
Characteristics:
LFC-309H is a special for 100% CO₂ or Ar+15-25%CO₂ gas and all-position welding. With excellent slag removal, good resistance to intergranular corrosion and good for welding dissimilar meals.
Applications:
It is suitable for welding of dissimilar metals such as stainless steel and carbon steel or stainless steel andlow alloy
Notes on Usage:
1. Use 100% CO₂ or Ar+15-25%CO₂ shielding gas.
2. Keep dry while in storage and delivery.
3. Trailer Shield is required to ensure the weld pool completely shield until solidification is complete and no porosity problem.
Classification:
AWS A5.22 E309HT1-1
JIS Z3323 TS308H-FC1
Welding Position:
Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Cr | Ni | Mo | Cu |
| 0.03 | 1.60 | 0.50 | 0.028 | 0.009 | 21.35 | 12.70 | 0.10 | 0.23 |
Typical mechanical properties of weld metal
| TS N/mm2 | EL % |
| 580 | 40 |
Sizes and recommended current range ( DC+)
| Diameter (mm) | 1.2 | 1.6 | ||
| Welding Position | F, H | V-UP, OH | F, H | V-UP, OH |
| Voltage(Volt) | 24-33 | 23-30 | 27-37 | 24-33 |
| Current(Amp) | 140-220 | 120-200 | 200-300 | 140-220 |
| Stick out(mm) | 15-20 | 15-20 | 15-20 | 15-20 |
| Flow rate(l/min) | 20-25 | 20-25 | 20-25 | 20-25 |
| Weight per spool(kg) | 12.5 | 12.5 | ||
