AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod

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Andre Stainless provides high-performance AWS Class ER309LSi MIG and TIG welding filler wires and rods in Pulau Ujong, Singapore. The filler metals are specifically alloyed for weld dissimilar metals and stainless to carbon steels with increased Silicon (Si) content for enhanced wetting action and better bead appearance. ER309LSi is commonly used for manual and automatic welding for processes where clean welds and corrosion resistance are desired. Andre Stainless guarantees that each wire is produced according to AWS A5.9 specifications, ensuring consistent arc performance, low spatter, and improved flow for excellent weld quality in structural and industrial applications.

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ER309LSi has a composition of 22–24% Chromium, 12–14% Nickel, <0.03% Carbon, and 0.65–1.0% Silicon. The high Silicon enhances puddle fluidity and weld appearance. These wires have tensile strength of approximately 600 MPa and yield strength of 400 MPa. The weld metal provides good corrosion resistance and superior oxidation resistance up to 950°C. ER309LSi is well suited for spray transfer MIG and accurate TIG welding with smooth arc behavior and low porosity. It is suitable for joining two different metals and conforms to AWS A5.9 specifications and provides better productivity in semi-automatic or robotic welding applications.

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 Andre 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

ER309LSi filler wires are utilized to weld stainless steels to carbon or mild steels in structural uses, tanks, and piping. They are widely utilized in chemical processing, food processing, and automotive exhaust systems where intense, clean welds are required. The added Silicon improves fluidity to provide excellent bead shape, which makes them suitable for use in robotic and high-speed MIG welding. These wires are also utilized for buffer layers before cladding and for welding 304, 309, and other stainless steels. ER309LSi is prized in fabrication facilities where appearance, accuracy, and corrosion protection are needed.