Home > Electrodes > AWS Class ER420 Mig & Tig Filler Welding Wire & Rod
Harshita Stainless, located in Delhi, India, is a leading manufacturer and supplier of high-quality AWS Class ER420 MIG and TIG filler welding wires and rods. Designed for high-strength carbon steels, ER420 provides excellent weldability, consistent feeding, and smooth arc performance. Manufactured under strict quality controls, this filler wire minimizes spatter, resulting in clean and efficient welds. It is suitable for various industrial applications. Harshita Stainless adheres to ISO standards and certifies that each batch meets rigorous mechanical and metallurgical requirements. With decades of experience, the company is your reliable source for high-performance welding consumables.
AWS Class ER420 filler wire primarily consists of carbon steel with ≤0.10% carbon, 0.30–0.60% manganese, and 0.30% silicon. It offers a tensile strength of around 420 MPa and a yield strength of about 340 MPa. The controlled chemistry of the alloy ensures excellent ductility, with a minimum elongation of 24%. It passes Charpy V-notch tests at –20 °C with impact energy of ≥27 J. This precise balance of elements results in consistent mechanical performance, stable weld bead shapes, and reliable fusion with most mild and low-alloy steels.
| Classification | AWS A5.9, ER420 |
| 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 ER420 MIG & TIG Filler Metal Application & uses |
|
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.03 | 19.5-22.0 | 9.0-11.0 | 0.75 | 1.0-2.5 | 0.65-1.00 | 0.03 | 0.03 | 0.75 |
| Tensile Strength (psi) | 86,000 psi (593 MPa) |
|---|---|
| Yield Strength (psi) | 57,000 psi (393 MPa) |
| Elongation (%) | 42% |
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ER420 MIG filler wire offers high hardness and wear resistance, ideal for welding martensitic stainless steels in applications requiring durable and abrasion-resistant joints under high stress.
ER420 TIG filler wire provides excellent hardness and wear resistance, suitable for welding martensitic stainless steels, ensuring strong, durable welds in high-stress and abrasive environments.
ER420 TIG filler rod delivers superior hardness and abrasion resistance, perfect for welding martensitic stainless steels in applications demanding high strength, durability, and performance under extreme conditions.
We guarantee the highest quality of our AWS Class ER420 MIG and TIG Filler Welding Wire and Rod through thorough in-house testing and inspection. Our team conducts rigorous evaluations to confirm the product’s performance, strength, and durability in various conditions. We are committed to on time and efficient delivery. Guaranteeing our clients receive their orders on time. This approach guarantees that every product meets the expectations of our customers without any delays.
AWS Class ER420 filler wire is common for welding structural and mild-steel components, including bridges, pressure vessels, pipelines, and general fabrication. Its high tensile strength and excellent weldability make it ideal for repairing carbon-steel parts in construction, automotive, and heavy engineering. It is also suitable for root and fill passes in multi-pass welding, where toughness and low-temperature performance are essential. Compatible with gas-shielded MIG setups or inert-gas TIG configurations, ER420 reduces post-weld cleanup and ensures optimal penetration in fabrication shops, maintenance welding, and on-site repair of industrial steel structures.
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