Flux

ROYAL FLUX SPL

AWS/ASME: A5.23 F7A2-EA2

ROYAL FLUX SPL is a basic agglomerated flux specially engineered for submerged arc welding with low-alloy EA2 wires.
Provides excellent notch toughness at sub-zero temperatures.
Basicity index ≥ 1.8, ensuring low hydrogen weld deposits and superior crack resistance.
Produces high-strength welds with good impact toughness.
Recommended for multi-pass welding of low-alloy steels in heavy fabrication and pressure applications.
Ideal for hydropower projects, offshore structures, pipelines, shipbuilding, and structural bridges.

1. Typical Chemical Composition of Weld Metal

C	Mn	Si	Mo	S	P	Fe
0.06 – 0.10	1.20 – 1.60	0.25 – 0.50	0.40 – 0.65	≤ 0.020	≤ 0.020	Balance

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -40 °C)
Typical Values	600 – 670	510 – 570	24 – 30	60 – 85

3. Recommended Welding Parameters — AWS A5.23 F7A2-EA2

Welding Position	Current (A)	Voltage (V)	Polarity	Flux Consumption (kg/kg Wire)
Flat / Horizontal	450 – 950	28 – 42	AC / DCEP	0.9 – 1.1

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