ROYAL PRIME K2 is a low alloy flux-cored wire developed for applications requiring high impact toughness at subzero temperatures. It provides excellent crack resistance and notch toughness, making it suitable for offshore structures, bridges, shipbuilding, pressure vessels, and cryogenic service piping.
| C | Mn | Si | Ni | Mo | Cr | P | S |
| 0.04 – 0.15 | 0.50 – 1.75 | 0.20 – 0.80 | 1.0 – 2.0 | ≤0.35 | ≤0.15 | ≤0.03 | ≤0.03 |
| Property | UTS (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness |
| Typical Values | 570 – 610 | 480 – 530 | 20 – 26 | 60 – 100 J @ –60°C |
| Welding Position | Current (A) | Voltage (V) | Shielding Gas | Gas Flow (L/min) |
| Flat / Horizontal | 170 – 350 | 24 – 34 | 100% CO₂ or Ar + 20–25% CO₂ | 15 – 25 |
| Vertical / Overhead | 140 – 280 | 22 – 32 | 100% CO₂ or Ar + 20–25% CO₂ | 15 – 25 |
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