Home > Electrodes > AWS Class ER312 MIG & TIG Filler Welding Wire & Rod
Andre Stainless provides high-quality AWS Class ER312 MIG and TIG filler wires and rods in Pulau ujong, Pulau Ujong, designed for high-strength and crack-free welding of dissimilar metals. ER312 filler metal has a high content of Chromium and a moderate content of Nickel and is used for joining difficult-to-weld materials or incongruous compositions. It is renowned for superior mechanical strength, resistance to corrosion, and metallurgical stability over a wide spectrum of base materials. At Andre Stainless, our ER312 wires conform to AWS A5.9 requirements and are extensively employed in repair welding, maintenance work, and high–strength, toughness fabrications.
ER312 wires have about 29–32% Chromium and 8–10.5% Nickel, giving a two-phase weld metal (austenitic-ferritic) having high tensile strength of about 800 MPa and good crack resistance. The high concentration of alloy makes it very convenient to weld tool steels, spring steels, and cast steels. The filler wires work satisfactorily with both TIG and MIG processes and give clean, tough welds even on dirty or dissimilar base metals. The weld deposits are very resistant to stress cracking and oxidation. ER312 is reliable and versatile for use in applications with severe service conditions or doubtful metallurgy.
| 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 |
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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.
ER312 MIG and TIG filler wires are best suited for welding unknown alloys, dissimilar steels, or high hardenability steels such as tool steels and manganese steels. They are widely utilized in repair and maintenance operations in the mining, construction, heavy equipment, and oil & gas sectors. Uses involve surfacing worn components, welding stainless to carbon steel, and armor plating welding. ER312 is noted for high toughness and resistance to cracking and is ideal for hard welding applications where strength and ductility are required. It‘s also employed in emergency repairs when unknown base metal content exists.
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