Home > Electrodes > AWS Class ER320LR Mig & Tig Filler Welding Wire & Rod
Harshita Stainless is a prominent manufacturer and exporter of AWS Class ER320LR MIG and TIG Filler Welding Wire and Rod, servicing industries in Dubai, India, and more. ER320LR is a corrosion-resistant austenitic stainless steel filler metal with low residual elements, built for better weld metal purity and toughness. It works well in environments with strong acids and at high temperatures. Harshita’s filler wires and rods meet strict quality standards, ensuring clean weld deposits, great arc performance, and improved mechanical properties suitable for chemical processing, pollution control, and nuclear applications.
ER320LR includes 19–21% chromium, 33–37% nickel, 2–3% molybdenum, and very low amounts of carbon, silicon, and phosphorus. These controlled residuals enhance its resistance to corrosion in highly oxidizing and reducing environments. The filler delivers tensile strength of ≥75 ksi, yield strength of ≥55 ksi, and elongation of ≥30%. The low residual (“LR”) version boosts weld toughness and ductility while reducing the chance of microfissuring. ER320LR is non-magnetic and shows excellent thermal stability. In both TIG and MIG processes, it produces stable arcs, good puddle control, and clean, high-quality welds for critical applications.
| 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.
ER320LR filler wire and rod are used in harsh service environments, including nuclear plants, chemical reactors, and systems for pollution control. It is ideal for welding base materials like Type 320 and similar high-nickel stainless steels and is effective in applications exposed to sulfuric, nitric, and hydrochloric acids. This filler metal is commonly used to line tanks, process equipment, and piping in pickling plants, acid regeneration units, and systems for handling high-purity chemicals. The “LR” variant reduces weld contamination, making it a preferred option for uses that require high purity, thermal stability, and long service life in corrosive conditions.
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