Flux

ROYAL FLUX 81

AWS/ASME: A5.17 F7A2-EM12K

ROYAL FLUX 81 is a versatile agglomerated flux developed for submerged arc welding with EM12K wires.
Provides excellent arc stability and smooth bead appearance.
Neutral flux chemistry ensures consistent weld deposit properties across a wide range of operating parameters.
Exhibits good slag detachability and stable weld pool control.
Suitable for single- and multi-wire SAW applications.
Designed for general structural steel, pressure vessels, pipelines, bridges, and fabrication industries.

1. Typical Chemical Composition of Weld Metal

C	Mn	Si	S	P
0.06 – 0.10	0.80 – 1.20	0.20 – 0.45	≤ 0.025	≤ 0.025

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -20 °C)
Typical Values	510 – 590	430 – 480	24 – 32	40 – 55

3. Recommended Welding Parameters — AWS A5.17 F7A2-EM12K

Welding Position	Current (A)	Voltage (V)	Polarity	Flux Consumption (kg/kg Wire)
Flat / Horizontal	400 – 900	28 – 42	AC / DCEP	0.9 – 1.1

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