Home > Electrodes > AWS Class ER320LR Mig & Tig Filler Welding Wire & Rod
The ER320LR filler metal falls under the American Welding Society (AWS) specification A5.9 / ASME SFA A5.9 for MIG (GMAW) and TIG (GTAW) stainless steel filler wires and rods. It’s specifically designed for welding stainless steels of the “Alloy 320 / 320LR” variety, which are high chromium and high nickel alloys known for their enhanced resistance to oxidation, high temperatures, and corrosive environments.
When it comes to the typical composition of the weld metal (in an undiluted deposit), you’ll find carbon at a maximum of about 0.025%, chromium ranging from 19.0% to 21.0%, nickel between 32.0% and 36.0%, molybdenum around 2.0% to 3.0%, copper from 3.0% to 4.0%, and manganese at about 1.5% to 2.0%. The levels of silicon and other residuals are kept very low (for example, Si ≤0.15%, P ≤0.015%, S ≤0.02%) to reduce the risk of hot-cracking and microfissuring. Mechanical properties typically show a tensile strength of around 86,000 psi (about 593 MPa) and a yield strength of approximately 57,500 psi (around 396 MPa), with an elongation of about 35% for the deposited weld metal. Thanks to its low residuals and high alloy content, this filler provides outstanding resistance to high-temperature oxidation and aggressive corrosive environments, making it a great choice for demanding service conditions.
| Classification | AWS A5.9, ER320LR |
| 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 ER320LR MIG & TIG Filler Metal Application & uses |
|
| C | Cr | Ni | Mo | Mn | Si | P | S | Nb | Cu 8XC min/0.40 max |
| 0.025 | 19.0-21.0 | 32.0-36.0 | 2.0-3.0 | 1.5-2.0 | 0.15 | 0.015 | 0.02 | 3.0-4.0 | 0.75 |
| Tensile Strength, ksi: | 86* |
| Yield Strength, ksi: | 58* |
| Elongation %: | 35* |
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This welding wire is available in sizes ranging from 0.8mm to 1.6mm in diameter. It is designed for high corrosion resistance, particularly in chloride-containing environments. The ER320LR alloy ensures stability in both high and low temperatures, making it ideal for demanding applications.
Available in sizes from 1.0mm to 2.4mm in diameter, this TIG filler wire offers excellent corrosion resistance, especially in aggressive chemical environments. The low carbon content of ER320LR minimizes carbide precipitation, ensuring enhanced durability and performance. It is suitable for welding similar alloys and dissimilar metals.
These rods come in diameters ranging from 1.6mm to 4.8mm, providing versatility for various welding needs. They offer superior corrosion resistance, particularly against intergranular and stress corrosion cracking. The ER320LR alloy composition makes them ideal for use in high-stress and high-temperature applications.
we conduct rigorous internal tests on our AWS Class ER320LR MIG and TIG Filler Welding Wire and Rod to ensure their superior performance and reliability. These tests include checks for weld strength, corrosion resistance and overall durability to meet stringent industry standards. We also offer third-party inspection services to provide additional assurance. Our focus on prompt delivery. Assure that our customers receive high-quality products on time, meeting their specific project requirements without delays.
As for its uses and applications, this filler is commonly employed for welding base metals with similar compositions (like Alloy 320, 20CB-3, and other high chromium-nickel-molybdenum stainless alloys) in various settings such as process equipment, tanks, piping, heat exchangers, and chemical plants. It’s particularly valuable in power generation, especially where high temperatures, oxidation, and corrosion resistance are crucial. Its properties make it perfect for fabricating or repairing components that encounter high temperatures, sulfuric environments,
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