JACKSUN ULTRA CR1 is a low-hydrogen electrode designed for welding creep-resistant steels used in high-temperature, high-stress applications such as boilers, pressure vessels, and power plant components. It provides excellent weld bead quality, deep penetration, and superior resistance to cracking under service conditions.
| C | Mn | Si | Ni | Mo | Cr | S | P |
| ≤ 0.12 | 0.5 – 1.0 | 0.5 – 1.0 | – | 0.4 – 0.65 | 1.00– 1.50 | ≤ 0.025 | ≤ 0.025 |
| Property | UTS (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness (J @ 0 °C) |
| Requirement | ≥ 550 | ≥ 460 | ≥ 19 | ≥ 47 |
| Typical Values | 620 – 880 | 520 – 780 | 20 – 29 | 55 – 75 |
| 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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