Home > Electrodes > AWS Class ER320LR Mig & Tig Filler Welding Wire & Rod
Weston Stainless, Midland, UK, is a top distributor of high-quality stainless steel welding consumables with long-lasting solutions for industrial use. Among its specialty products, AWS Class ER320LR MIG and TIG filler welding wire and rod are used for excellent corrosion and oxidation resistance in high-temperature and aggressive conditions. Produced from austenitic stainless steel with low residual elements, ER320LR reduces the risk of weld decay and cracking. Available in wire and rod forms, this filler metal has good mechanical properties and weldability and is well suited for high–strength applications and chemical attack resistance.
AWS Class ER320LR MIG and TIG filler wire and rod consists of about 19-22% chromium, 33-37% nickel, 2-3% molybdenum, and trace residual elements like silicon, phosphorus, and sulfur to provide corrosion resistance. These fillers have a tensile strength of about 620 MPa, yield strength of about 350 MPa, and elongation of 30-35%. Their physical characteristics are a density of 7.9 g/cm³ and melting range of 1350-1400°C, with the latter providing excellent high-temperature stability. The low residual element content enhances weld integrity and resistance to intergranular corrosion.
| 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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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.
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.
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.
AWS Class ER320LR MIG and TIG filler wire and rod are extensively applied in chemical processing, power generation, marine, and aerospace industries. They are well suited for welding stainless steel parts in highly corrosive environments, such as heat exchangers, pressure vessels, and piping systems exposed to aggressive acids and chlorides. Their excellent resistance to oxidation, stress corrosion cracking, and high-temperature degradation provides long-term weld performance. These fillers offer superior weldability, making them suitable for severe applications demanding strength and high mechanical strength.
AWS Class ER320LR MIG and TIG filler wire and rod are supplied with test certificates assuring conformity with AWS A5.9 and ISO 14343 standards to guarantee precise chemical composition and mechanical properties. They are supplied on spools for MIG and cut-length rods for TIG in moisture-resistant packs to ensure quality. Shipping options are in bulk or packaged according to requirement, ensuring safety during transit and prompt supply for industrial welding operations.







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