Home > Electrodes > AWS Class ER312 MIG & TIG Filler Welding Wire & Rod
Lecong Stainless Manufacturer and Suppliers in Da Nang, Vietnam, offers AWS Class ER312 MIG and TIG filler wire and rod, made for welding dissimilar steels and stainless steels that require high crack resistance. With its high alloy content, this filler metal delivers superior strength and resists dilution effects, making it ideal for challenging steels. ER312 provides excellent arc stability, smooth bead formation, and dependable weld deposits for both MIG and TIG processes. Lecong Stainless supplies ER312 filler wire and rod across Vietnam and internationally, supporting industries that need durable welds for critical dissimilar metal applications.
ER312 contains about 28–32% chromium, 8–10% nickel, and ≤0.15% carbon. This high-alloy composition creates tough, crack-resistant weld deposits with notable strength. Mechanical properties include tensile strength near 110,000 psi, yield strength close to 80,000 psi, and elongation of 20–25%. The weld deposit is hard and resistant to hot cracking, ensuring reliability when welding dissimilar steels. With its unique alloy balance, ER312 remains tough while resisting cracking in highly restrained weld joints, making it suitable for both MIG and TIG processes.
| Classification | AWS A5.9, ER312 |
| 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 ER312 MIG & TIG Filler Metal Application & uses |
|
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.15 | 28.0-30.0 | 20.0-22.0 | 0.75 | 1.0-2.5 | 0.30-0.65 | 0.03 | 0.03 | 0.75 |
| Yield, kpsi: | 78 |
| Tensile Strength, kpsi: | 109 |
| Elongation%, min: | 45 |
Contact us to get a quick quote for your requirement.
ER312 MIG filler wire excels in welding dissimilar metals and high-strength steels, offering robust strength and corrosion resistance, ideal for heavy machinery, construction, and shipbuilding applications.
ER312 TIG filler wire provides high strength and wear resistance for welding dissimilar metals. It ensures strong, durable welds with excellent corrosion resistance, suitable for aerospace and industrial repairs.
ER312 TIG filler rod is designed for high-strength welds on dissimilar metals, offering superior durability and corrosion resistance. Ideal for demanding applications in heavy machinery and construction.
After manufacturing, our quality control team conducts comprehensive destructive and non-destructive testing using advanced tools to ensure the reliability of AWS Class ER312 MIG and TIG Filler Welding Wire and Rod. Then securely we package the products and guarantee timely delivery to customers, providing all necessary documentation along with the shipment for a seamless experience.
AWS Class ER312 MIG and TIG filler wire and rod have wide applications for welding dissimilar steels, tool steels, and stainless steels that are tough to weld. Common uses include joining stainless steel to carbon steel, repairing dies, shafts, and structural components, and creating overlays that need crack resistance. It is also valuable in maintaining and repairing high-strength or unknown steels where other fillers might fail. Lecong Stainless supplies ER312 filler wire and rod throughout Vietnam and globally, providing industries with reliable solutions for critical welding situations requiring strength, crack resistance, and long-lasting durability.
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