Wires

ROYAL ARCPRO 12K

AWS/ASME: A5.17 EM12K

ROYAL ARCPRO 12K is a manganese-silicon alloyed submerged arc welding wire classified as EM12K.
Designed for welding mild and low alloy steels with higher strength requirements than EL8.
Provides excellent mechanical properties with good impact strength when combined with neutral/basic fluxes.
Ensures smooth arc stability, low spatter, and high deposition rates.
Suitable for pressure vessels, pipelines, bridges, offshore structures, and shipbuilding.
Performs well in single and multi-pass welding applications.

1. Typical Chemical Composition of Weld Metal

C	Mn	Si	S	P	Fe
0.10 max	0.80 – 1.25	0.05 – 0.15	0.030 max	0.030 max	Balance

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -30 °C)
Typical Values	520 – 600	420 – 480	24 – 30	40 – 65

3. Recommended Welding Parameters — SAW with EM12K

Welding Position	Current (A)	Voltage (V)	Polarity	Wire Dia (mm)
Flat / Horizontal	350 – 1000	28 – 42	AC / DCEP	2.0 – 6.0

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