Home > Electrodes > AWS Class ER320LR Mig & Tig Filler Welding Wire & Rod
Lecong Stainless Manufacturer and Suppliers in Da Nang, Vietnam, provides AWS Class ER320LR MIG and TIG filler wire and rod, designed for welding highly alloyed stainless steels. The “LR” grade indicates low residual elements, which helps prevent microfissuring and ensures reliable welds in tough service conditions. This filler metal offers strong corrosion resistance, especially in sulfuric acid and chloride-rich environments. With stable arc performance, smooth feeding, and durable weld deposits, ER320LR guarantees high-quality welding outcomes. Lecong Stainless supplies this product to industries in Vietnam and abroad, meeting international standards for critical stainless steel welding tasks.
ER320LR typically contains 19–21% chromium, 33–37% nickel, 2–3% molybdenum, and ≤0.03% carbon, with controlled residual elements (Nb, Ti). This makeup provides excellent resistance to sulfuric acid, phosphoric acid, and chloride corrosion. Mechanical properties include a tensile strength of 80,000–85,000 psi, yield strength around 55,000–60,000 psi, and an elongation of about 30%. The weld deposit shows toughness, ductility, and resistance to fissuring. With low residuals, ER320LR offers reliable MIG and TIG welding performance, yielding durable welds in highly corrosive conditions where standard stainless steels might fail.
| 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 |
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| 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* |
Contact us to get a quick quote for your requirement.
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.
AWS Class ER320LR MIG and TIG filler wire and rod are widely used in industries dealing with aggressive chemical environments. Applications include sulfuric acid plants, chemical processing equipment, heat exchangers, offshore platforms, and marine uses. It is suitable for welding highly alloyed stainless steels that require strong resistance to intergranular corrosion, pitting, and stress corrosion cracking. Its low residual design helps prevent weld fissuring, making it reliable for fabricating tanks, pipes, and pressure vessels. Lecong Stainless supplies ER320LR filler wire and rod throughout Vietnam and internationally, ensuring strong, durable welds for industries needing excellent corrosion resistance in critical services.
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