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AWS Class ER420 MIG and TIG filler wire and rod is a stainless steel welding consumable crafted for welding alloys that are similar to type 420 stainless steel. It boasts improved hardness and wear resistance, along with decent corrosion resistance.
The typical composition of the weld metal features carbon at 0.25–0.40%, chromium between 12–14%, nickel up to 0.6%, manganese around 0.47%, and silicon roughly 0.36%. In terms of mechanical properties, it offers a tensile strength of about 1,000 MPa, a yield strength of around 830 MPa, and an elongation of approximately 45%. This makes for robust, wear-resistant welds that are perfect for tough applications.
| 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.
This filler is ideal for welding or overlaying steels that need both abrasion and corrosion resistance, making it suitable for surfacing, cladding, and the fabrication of machinery parts that face wear and moderate corrosive environments. To achieve the best weld quality, it’s crucial to pay attention to proper preheating, interpass control, and the selection of shielding gas.







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