Home > Electrodes > 309LMo MIG & TIG Filler Welding Wire & Rod
Andre Stainless supplies stainless steel welding products in Pulau ujong, Pulau Ujong, featuring premium 309LMo MIG and TIG filler wires and rods. These fillers are alloyed with Molybdenum to improve pitting resistance and corrosion performance in harsh chemical environments. 309LMo is perfect for joining dissimilar metals and overlay applications where high strength and corrosion resistance are crucial. Our filler wires meet AWS A5.9 standards and come in various diameters for MIG and TIG welding. Andre Stainless offers consistent arc stability, low spatter, and high-quality welds for demanding service environments.
309LMo filler wires and rods include about 23% Chromium, 13% Nickel, and 2.5–3% Molybdenum, delivering excellent corrosion resistance against acids, chlorides, and marine environments. They have tensile strengths of about 580–620 MPa and yield strengths around 400 MPa, along with high elongation and ductility. The addition of Molybdenum enhances resistance to pitting and crevice corrosion. These wires ensure excellent arc stability, good slag removal (TIG), and high deposition rates (MIG). Meeting AWS A5.9 ER309LMo standards, they are optimized for welding dissimilar steels and cladding applications in corrosive or high-temperature conditions.
| 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.
We conduct extensive in-house testing to ensure that the highest quality standards are achieved by 309L Mo MIG and TIG Filler Welding Wires and Rods. Our customers know that we offer comprehensive third-party inspection services for these products to provide them with the assurance that these products are reliable and performing. We equally hold equal attention with regard to the timely supply of products for which you can place your orders in advance thus enabling you to also plan efficiently the other components of your project.
309LMo MIG and TIG filler wires are widely used for welding dissimilar metals, such as stainless steel to carbon steel, and for buffer layers in overlay welding. They are often employed in pulp and paper mills, chemical processing, and marine structures, where resistance to chloride corrosion is essential. These fillers are also used in pressure vessels, offshore installations, and flue gas desulfurization systems. The Molybdenum content makes them suitable for aggressive environments involving acids and chlorides. TIG rods are ideal for precise welds in thin sections, while MIG wires provide efficiency in automated or production welding.
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