Home > Electrodes > AWS Class ER420 Mig & Tig Filler Welding Wire & Rod
Weston Stainless in Midland, UK, specializes in supplying stainless steel welding consumables of top quality, such as AWS Class ER420 MIG and TIG Filler Welding Wire and Rod. Produced from Grade ER420 stainless steel, this martensitic filler material is intended for high-hardness and wear-resistant welds and overlay applications with moderate corrosion resistance. Supplied in wire and rod form, it is applied extensively in industries like power generation, oil & gas, and manufacturing, where high-strength welds and better durability are critical, especially in wear-and-impact exposed components.
AWS Class ER420 MIG and TIG Filler Welding Wire and Rod consists mainly of 12-14% chromium with low carbon content for greater weldability and heat treatment hardness. Mechanically, it has a tensile strength of approximately 750-900 MPa, yield strength of 550 MPa, and elongation of about 12-18%. Physically, it is of a density of 7.7 g/cm³ and possesses good oxidation resistance until 600°C. This filler metal is famous for its very good toughness, wear resistance, and ability to attain high hardness by means of post-weld heat treatment.
| 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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High hardness and wear resistance, ideal for welding martensitic stainless steels in applications requiring durable and abrasion-resistant joints under high stress.
Excellent hardness and wear resistance, suitable for welding martensitic stainless steels, ensuring strong, durable welds in high-stress and abrasive environments.
Superior hardness and abrasion resistance, perfect for welding martensitic stainless steels in applications demanding high strength, durability, and performance under extreme conditions.
AWS Class ER420 MIG and TIG Filler Welding Rod and Wire is applied where top hardness and wear resistance are needed. It finds frequent use in welding turbine parts, pump shafts, and tool steel parts. In the oil and gas sector, it is best suited for hardfacing operations, valve seating, and pipeline repair. It is further applied in the aerospace, automotive, and defense industries for producing parts that experience severe mechanical stress and high temperatures. It is also ideal for overlaying and restoring worn parts in industrial equipment.
AWS Class ER420 MIG and TIG Filler Welding Wire and Rod is provided with necessary test certificates such as Mill Test Certificates (MTC) to EN 10204 3.1, third-party inspection reports, and chemical and mechanical analysis reports for adherence to industrial standards. Wires and rods are packed tightly in moisture-resistant spools and sealed containers for preservation of quality and to avoid contamination. With a stable supply chain and international distribution, Weston Stainless provides effective packaging and timely delivery, satisfying the needs of diverse industrial uses.
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