ROYAL PRIME 71 SPL is a flux-cored arc welding wire for carbon steels, optimized for high-quality welds in critical applications. It ensures deep penetration, smooth arc characteristics, and excellent slag detachability. Specially designed for structural steelwork, shipbuilding, offshore platforms, and pressure vessels.
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| 0.06 – 0.12 | 1.20 – 1.75 | 0.30 – 0.90 | ≤ 0.030 | ≤ 0.030 | ≤0.20 | ≤0.50 | ≤0.30 | ≤0.35 |
| Property | UTS (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness |
| Typical Values | 520 – 580 | 430 – 480 | 25 – 30 | 55 – 75 J @ –29°C |
| Welding Position | Current (A) | Voltage (V) | Shielding Gas | Gas Flow (L/min) |
| Flat / Horizontal | 180 – 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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