AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod

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Niazi Stainless, based in Manama, Bahrain, offers top-notch welding consumables, including the AWS Class ER309LSi MIG and TIG filler wires. These fillers are crafted for outstanding performance and reliability, making them perfect for welding austenitic stainless steels, especially when working with dissimilar metals like carbon steel and stainless steel. Niazi Stainless guarantees that their ER309LSi fillers comply with international standards, ensuring consistent weld quality, impressive corrosion resistance, and a smooth bead finish. This product supports various industries, including petrochemical, food processing, construction, and heavy fabrication, helping them achieve durable and precise welds.

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The AWS Class ER309LSi MIG and TIG fillers are primarily made up of 23–25% chromium, 12–14% nickel, and a maximum of 0.08% carbon, with added silicon to enhance fluidity and arc stability. The filler wire creates weld metal that boasts excellent corrosion and oxidation resistance, high ductility, and robust mechanical properties. Typical tensile strength falls between 580–650 MPa, while the welds maintain toughness and stability across a broad temperature range. The inclusion of silicon and other alloying elements improves wetting, minimizes spatter, and elevates overall weld quality, making it suitable for demanding applications and multi-pass welding.

AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod Specifications

Classification	AWS A5.9, ER309LSi
Form	MIG spools, TIG cut lengths, Reels and Coils
Type Of Welding	Inert Gas Welding
Current	MIG-DCEP / TIG-DCEN
Diameters	.023”, .030”, .035”, .045”, 1/16”, 3/32”, 1/8”
Standard TIG straight lengths are available	36” (914 mm) or 39” (1000 mm) lengths. Other lengths available upon request.
AWS ER309LSi MIG & TIG Filler Metal Application & uses	Hardware tools Metallurgy Machinery Construction Shipbuilding Petroleum Chemical plant Power sector Gas Industry

AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod Chemical Composition

C	Cr	Ni	Mo	Mn	Si	P	S	Cu
0.12	24.0-26.0	13.0-15.0	0.75	1.0-2.5	0.65-1.00	0.03	0.03	0.75

AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod Mechanical Properties

Yield, kpsi:	564
Tensile Strength, kpsi:	87
Elongation%, min:	41

We offer These Products as per DIN, ISO, JIS or ANSI Standard.

Why Choose AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod from Niazi Stainless?

Largest Inventory

Customer Support

On Time Deliveries

ISO Certified

Types of AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod

Stainless Steel ER309LSi MIG Filler Wire

Stainless Steel ER309LSi MIG Filler Wire offers high-quality, silicon-enhanced welds for dissimilar metals, providing excellent corrosion resistance and bead appearance in applications like power generation and industrial fabrication.

Stainless Steel ER309LSi TIG Filler Wire

Stainless Steel ER309LSi TIG Filler Wire delivers superior weld quality and corrosion resistance for dissimilar metal joints, ideal for high-temperature and critical applications in industries such as petrochemical and structural fabrication.

Stainless Steel ER309LSi TIG Filler Rod

Stainless Steel ER309LSi TIG Filler Rod ensures strong, corrosion-resistant welds with enhanced fluidity for dissimilar metals, suitable for high-stress applications in power generation, chemical processing, and industrial sectors.

After the production of our AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod, our quality control team conducts thorough destructive and non-destructive testing using advanced equipment to ensure the superior performance and reliability of the product. Once the testing is complete we carefully package the filler wire and rod using appropriate materials to maintain their quality during shipping. We assure smooth and timely delivery to our customers. Guaranteeing on-time arrival without any delays. All necessary documentation, including certificates and test reports, are provided to the clients upon delivery.

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AWS Class ER309LSi MIG and TIG Filler Welding Wires and Rods Uses

AWS Class ER309LSi fillers are commonly used for welding stainless steels in chemical plants, food processing equipment, pressure vessels, and piping systems. They excel at joining 304, 304L, 309, and other austenitic stainless steels, as well as dissimilar joints with mild or carbon steel. Typical applications include cladding, overlay welding, and repair work in corrosive or high-temperature settings. With their excellent corrosion resistance, smooth bead profile, and strong mechanical properties, ER309LSi fillers are a go-to choice for critical industrial, petrochemical, and marine projects.