THJ422 (E4303)
E4303 Carbon Steel Welding Electrodes | Titanium-Calcium Coated
Certificates:
ABS
BV
CCS
DNV
LR
NK
KR
NAKS
RINA
Application
- Shipbuilding
- Pressure Vessel
- Energy Industry
- Heavy Machinery
DETAILS
THJ422 (E4303) is a titania-type electrode compatible with both AC and DC power sources, suitable for all-position welding. It features excellent operating characteristics, including a stable arc, low spatter, easy slag removal, and effortless arc re-strike.
Features
- Titanium-calcium coating for superior arc stability
- Smooth arc with minimal spatter and easy slag removal
- All-position welding capability with aesthetic bead appearance
- Excellent AC and DC operational performance
- Easy arc initiation and quick re-striking
Typical Applications
- General low-carbon steel structure welding
- Sheet metal fabrication and light ironwork
- Machinery manufacturing and vessel repair
- Pipeline and structural steel fabrication
- General maintenance and outdoor repair
Welding Positions
- PA / PB / PC / PD / PE / PF
WARNING
- Generally, the electrodes do not need to be re-dried before welding. If affected by moisture, they should be re-dried at 150–170°C for 1 hour.
| Test Item | Rm (MPa) | Rel / RP₀.₂ (MPa) | A （%） | KV₂ （J） 0℃ | KV₂ （J） -20℃ |
|---|---|---|---|---|---|
| Requirement | 430-560 | ≥330 | ≥22 | ≥47 | ≥47 |
| Typical Result | 480 | 420 | 28 | 80 | 70 |
| Element | C | Mn | Si | S | P | Ni | Cr | Mo | V |
|---|---|---|---|---|---|---|---|---|---|
| Requirement (%) | ≤0.10 | 0.27-0.55 | ≤0.25 | ≤0.030 | ≤0.035 | ≤0.30 | ≤0.20 | ≤0.30 | ≤0.08 |
| Typical Result (%) | 0.08 | 0.37 | 0.14 | 0.018 | 0.022 | 0.030 | 0.035 | 0.005 | 0.004 |
| Diameter (mm) | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
|---|---|---|---|---|---|
| Current (A) | 40-70 | 60-90 | 90-140 | 160-210 | 220-270 |