Description
NIHONWELD N-8018-G is a high-performance iron powder low hydrogen welding electrode developed for welding high-strength steels in demanding structural and industrial applications. Designed for direct current welding in all positions except vertical down, it provides excellent usability, stable arc characteristics, and dependable weld quality.
The electrode produces weld metal with excellent crack resistance and X-ray soundness, making it suitable for critical fabrication and heavy-duty industrial welding operations. It is especially effective for multi-layer fillet welding with large leg lengths, offering reliable weld penetration and smooth bead appearance.
NIHONWELD N-8018-G delivers strong mechanical properties, excellent toughness, and consistent welding performance for structural steel fabrication, maintenance, repair work, and industrial construction projects.
Key Features
- Iron powder low hydrogen electrode for high-strength welding
- Excellent crack resistance and weld soundness
- Suitable for all positions except vertical down
- Stable arc and smooth welding operation
- X-ray quality weld deposits
- Suitable for multi-layer fillet welding applications
Classification
- AWS A5.5 E8018G
- JIS DL5016-6AP1
- KS E5316
Typical Chemical Composition of Weld Metal Deposits (%)
| C | Si | Mn | P | S | Ni |
|---|---|---|---|---|---|
| 0.06 | 0.54 | 1.35 | 0.012 | 0.010 | 0.70 |
Typical Mechanical Properties of Weld Metal Deposits
| Property | Value |
|---|---|
| Yield Point | 540 N/mm² (78 KSI) |
| Tensile Strength | 620 N/mm² (90 KSI) |
| Elongation | 28% |
| Impact Value | -29°C, 110 J (-20°F, 81 Ft-Lbs) |
Size and Recommended Current Range (AC / DC+)
| Diameter | Length | Flat | Vertical & Overhead |
|---|---|---|---|
| 2.5 mm | 350 mm | 55–85A | 50–80A |
| 3.2 mm | 350 mm | 90–130A | 90–115A |
| 4.0 mm | 400 mm | 130–180A | 110–170A |
| 5.0 mm | 400 mm | 180–240A | 150–200A |
Welding Positions
All Positions Except Vertical Down
Applications
- Structural steel fabrication
- Multi-layer fillet welding
- Heavy industrial welding
- Maintenance and repair work
- High-strength steel applications
- Industrial construction projects
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