JACKSUN ULTRA 12018 G is a low-hydrogen, premium electrode designed for welding quenched and tempered steels requiring high tensile strength and toughness. It ensures excellent arc stability, deep penetration, and smooth bead appearance. Suitable for heavy structural steels, pressure vessels, pipelines, and critical high-strength components.
| C | Mn | Si | Ni | Mo | Cr | S | P |
| ≤ 0.12 | 0.8 – 1.5 | 0.8 – 1.2 | 0.50 | 0.20 – 0.8 | 0.3 – 0.7 | ≤ 0.025 | ≤ 0.025 |
| Property | UTS (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness (J @ 0 °C) |
| Typical Values | 920 – 1280 | 1020 – 1080 | 16 – 25 | 55 – 80 |
| Size (mm) | Size (inch) | Current Range (A) | Polarity | Voltage (V) | Packing (5 kg) | Packing (20 kg) |
| 2.5 | 3/32 | 50 – 90 | AC / DC+ | 20 – 22 | ✔ | ✔ |
| 3.2 | 1/8 | 90 – 130 | AC / DC+ | 22 – 24 | ✔ | ✔ |
| 4.0 | 5/32 | 120 – 180 | AC / DC+ | 24 – 26 | ✔ | ✔ |
| 5.0 | 3/16 | 160 – 240 | AC / DC+ | 26 – 28 | ✔ | ✔ |
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