Stainless Steel

JACKSUN NOVA 309L

AWS/ASME: A5.9 ER309L

JACKSUN NOVA 309L is a stainless steel solid wire for MIG (GMAW) and TIG (GTAW) welding, designed for:
Welding dissimilar steels (stainless steel to carbon steel or low alloy steels).
Use as a buffer layer before hardfacing or cladding.
Applications requiring oxidation and corrosion resistance at elevated temperatures.
Low-carbon (L-grade) version reduces the risk of intergranular corrosion.

1. Typical Chemical Composition of Weld Metal (% by weight)

C	Mn	Si	Cr	Ni	Mo	S	P	Cu
≤ 0.030	1.0 – 2.5	0.30-0.65	23.0 – 25.0	12.0 – 14.0	0.2-0.75	≤ 0.035	≤ 0.025	≤ 0.75

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -20 °C)
Typical Values	520 – 650	370 – 450	32 – 36	40 – 55

3. Recommended Welding Parameters

Process	Diameter (mm)	Current (A)	Voltage (V)	Shielding Gas	Polarity	Gas Flow (L/min)
TIG (GTAW)	1.6 – 3.2	60 – 160	—	100% Ar	DCEN	8 – 12
MIG (GMAW)	0.8 – 1.6	90 – 250	22 – 32	98% Ar + 2% O₂ or Ar + 2% CO₂	DCEP	12 – 20

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