Flux

ROYAL FLUX SS

AWS/ASME: Suitable for all stainless steel ER grades (ER308, ER308L, ER309L, ER316L, ER347, etc.)

ROYAL FLUX SS is a neutral fused flux specially designed for Submerged Arc Welding (SAW) of stainless steels with corresponding ER grade wires.
Provides bright, smooth, slag-free weld deposits.
Designed for austenitic and martensitic stainless steels.
Offers excellent corrosion resistance and low hydrogen levels.
Produces welds with superior mechanical properties and low oxygen content, improving corrosion resistance.
Suitable for single and multi-pass welding of stainless steels in critical applications.
Ideal for pressure vessels, chemical plants, pipelines, shipbuilding, and food industry equipment.

1. Typical Chemical Composition of Weld Metal

C	Cr	Ni	Mo	Mn	Si	S + P
ER308L (%)	0.02 – 0.04	19.0 – 21.0	9.0 – 11.0	—	1.0 – 2.0	0.30 – 0.65	≤ 0.020
ER316L (%)	0.02 – 0.04	18.0 – 20.0	11.0 – 13.0	2.0 – 2.5	1.0 – 2.0	0.30 – 0.65	≤ 0.020

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -196 °C)
Typical ER308L Values	550 – 650	320 – 400	30 – 40	60 – 100
Typical ER316L Values	550 – 650	320 – 400	30 – 40	60 – 100

3. Recommended Welding Parameters — Stainless Steel SAW

Welding Position	Current (A)	Voltage (V)	Polarity	Flux Consumption (kg/kg Wire)
Flat / Horizontal	350 – 900	28 – 38	AC / DCEP	0.9 – 1.1

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