THA302 (E309-16)
E309-16 Stainless Steel Welding Electrodes | Dissimilar Steel Joining
Certificates:
CCS
Application
- Shipbuilding
- Pressure Vessel
- Energy Industry
- Heavy Machinery
DETAILS
Bridge Brand THA302 (E309-16) stainless stick electrodes deliver exceptional puddle control, a smooth arc, and excellent slag release
Features
- Superior performance for joining dissimilar metals
- Smooth and stable arc with minimal spatter
- Easy slag removal and aesthetic bead appearance
- High heat and corrosion resistance
- AC and DCEP versatility
Typical Applications
- Welding stainless steel to carbon or low-alloy steel
- Welding 309 type stainless steels
- Stainless steel cladding on carbon steel
- Furnace parts and heat exchangers
- Petrochemical equipment fabrication
Welding Positions
- PA / PB / PC / PD / PE / PF
WARNING
- The electrodes must be re-dried at 320–350°C for 1 hour prior to welding.
- Rust, oil, moisture, and other contaminants must be removed from the weld zone before welding.
-
DC⁺ is preferred to AC, with lower heat input suggested. Preheat and interpass temperatures should be kept below 150°C.
| Test Item | Rm (MPa) | A （%） |
|---|---|---|
| Requirement | ≥550 | ≥25 |
| Typical Result | 600 | 38 |
| Element | C | Mn | Si | S | P | Ni | Cr | Mo | Cu |
|---|---|---|---|---|---|---|---|---|---|
| Requirement (%) | ≤0.15 | 0.5-2.5 | ≤1.00 | ≤0.030 | ≤0.04 | 12.0-14.0 | 22.0-25.0 | ≤0.75 | ≤0.75 |
| Typical Result (%) | 0.06 | 0.89 | 0.69 | 0.010 | 0.025 | 12.50 | 24.05 | 0.10 | 0.08 |
| Diameter (mm) | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
|---|---|---|---|---|---|
| Current (A) | 25-50 | 50-80 | 80-110 | 110-160 | 160-200 |