ROYAL ARCPRO 12 is a low-carbon, mild steel submerged arc welding wire classified as EL12.
Designed for welding unalloyed structural steels.
Produces smooth bead surface with uniform slag removal.
Ensures good mechanical properties for general fabrication work.
Widely used in boilers, shipbuilding, bridges, and pressure vessels.
Suitable for both DC and AC operations with neutral/basic fluxes.
| C | Mn | Si | S | P | Fe |
| 0.10 max | 0.35 – 0.65 | 0.03 – 0.07 | 0.030 max | 0.030 max | Balance |
| Property | UTS (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Toughness (J @ -20 °C) |
| Typical Values | 440 – 480 | 350 – 380 | 25 – 30 | 35 – 60 |
| Welding Position | Current (A) | Voltage (V) | Polarity | Wire Dia (mm) |
| Flat / Horizontal | 300 – 900 | 28 – 40 | AC / DCEP | 2.0 – 6.0 |
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