Home > Electrodes > 309LMo MIG & TIG Filler Welding Wire & Rod
Vinit Stainless, based in Chennai, India, is a prime manufacturer and supplier of high-quality stainless steel welding consumables. The firm has a comprehensive portfolio of products such as 309LMo TIG and MIG filler welding wires and rods, designed for severe welding applications such as welding dissimilar metals and corrosion-resistant stainless steels. Vinit Stainless is renowned for its accurate manufacturing processes, following international standards (AWS, ASME, ISO), and customer satisfaction. Their filler metals are relied upon in markets like chemical processing, desalination, marine, pulp and paper, and offshore engineering to provide excellent weld integrity and performance in extreme corrosion and high-heat settings.
309LMo filler rods and wires are alloyed with about 23% Chromium, 13% Nickel, 2.5% Molybdenum, and minimal carbon content to improve corrosion resistance and minimize carbide precipitation. Both MIG (GMAW) and TIG (GTAW) welding processes are suited for these fillers with high mechanical properties such as tensile strength of ~580 MPa, yield strength in excess of 400 MPa, and elongation of about 30%. The inclusion of molybdenum enhances pitting as well as crevice corrosion resistance, particularly in chloride-enriched environments. These wires deposit good welds with superior crack resistance and shiny bead finish, thus suitable for both overlay and structural applications.
| Classification | AWS A5.9, 309LMo |
| 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 309LMo MIG & TIG Filler Metal Application & uses |
|
| C | Mn | Si | Cr | Ni | S | P | Mo | Cu |
| 0.03 max | 1.0-2.5 | 0.30-0.65 | 23-25 | 12-14 | 0.03 max | 0.03 max | 2-3 | 0.75 max |
| Tensile Strength (psi) | 86,000 psi (593 MPa) |
|---|---|
| Yield Strength (psi) | 57,000 psi (393 MPa) |
| Elongation (%) | 42% |
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Alloy 309LMo MIG filler wire provides excellent corrosion resistance and high-temperature strength, suitable for welding in harsh environments like chemical processing and power generation.
Alloy 309LMo TIG filler wire offers superior resistance to pitting and crevice corrosion, ideal for high-temperature applications and joining dissimilar metals in challenging environments.
Alloy 309LMo TIG filler rod delivers robust corrosion resistance and strength, perfect for precision welding in harsh conditions, including chemical processing, petrochemical, and power generation industries.
309LMo MIG and TIG filler rods and wires are applied to weld dissimilar metals like stainless steel to carbon steel, buffer layers before overlay, and in applications where increased corrosion resistance is needed. Some common industries are chemical processing, offshore platforms, marine fabrication, pollution control equipment, and desalination facilities. They are especially beneficial in applications involving aggressive chemicals, saltwater, or high-temperature services. They are also used extensively in surfacing and cladding applications to enhance durability and anti-corrosion and heat-resistance. Their consistent arc, low spatter, and excellent metallurgical properties make them well suited for crucial fabrication and maintenance tasks.
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