Conra Welding Supplies, based in Houston, USA, is a reliable name in the world of welding, known for crafting top-notch welding solutions like the AWS Class ER309/309L MIG and TIG Filler Welding Wire. This particular wire is expertly engineered for welding different types of metals, especially when it comes to fusing stainless steels with carbon or low-alloy steels. Conra takes pride in maintaining high production standards, ensuring that their wire delivers outstanding arc stability, a smooth bead finish, and minimal spatter during both MIG and TIG welding processes. The ER309/309L wire is perfect for structural fabrication, cladding, and repair tasks across various industries, including petrochemical, power generation, and shipbuilding, where strength, reliability, and resistance to corrosion are essential.
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| Classification | AWS A5.9, ER309/309L |
| 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 ER309/309L MIG & TIG Filler Metal Application & uses |
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The AWS Class ER309/309L MIG and TIG Filler Welding Wire is composed of 22–24% chromium and 12–14% nickel, with a low carbon content usually below 0.03% in the 309L grade. This low carbon level helps reduce the chances of intergranular corrosion, while the chromium and nickel work together to provide excellent resistance to oxidation and corrosion. In terms of mechanical properties, it boasts a tensile strength of 80,000–90,000 psi, a yield strength exceeding 60,000 psi, and an elongation of about 30%. This unique composition guarantees strong, ductile, and corrosion-resistant welds, making the wire a go-to choice for challenging welding tasks involving dissimilar or heat-resistant materials.
| Class | UNS | Oxford Alloys | SANDVIK | BOHLER |
| ER309/309L | S30983 | Alloy 309/309L | EXATON 22.15.3.L | BOHLER THERMAINT 25/14 E-309L |
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.03 | 23.0-25.0 | 12.0-14.0 | 0.75 | 1.0-2.5 | 0.30-0.65 | 0.03 | 0.03 | 0.75 |
| Tensile Strength, kpsi: | 86* |
| Yield Strength, kpsi: | 58* |
| Elongation %: | 40* |
| Diameter | Process | Volt | Amps | Shielding Gas | |
| in | (mm) | ||||
| .035 | (0.9) | GMAW | 22-23 | 180-210 | Spray transfer 98% Argon/2% Oxygen |
| .045 | (1.2) | GMAW | 23-25 | 195-260 | Spray transfer 98% Argon/2% Oxygen |
| 1/16 | (1.6) | GMAW | 25-28 | 260-390 | Spray transfer 98% Argon/2% Oxygen |
| .035 | (0.9) | GMAW | 19-23 | 55-170 | Short Circuiting Transfer 90% Helium/ 7 ½% Argon / 2 ½% CO2 |
| .045 | (1.14) | GMAW | 19-23 | 100-185 | Short Circuiting Transfer 90% Helium/ 7 ½% Argon / 2 ½% CO2 |
| .035 | (0.9) | GTAW | 12-15 | 60-100 | 100% Argon |
| .045 | (1.14) | GTAW | 13-16 | 70-120 | 100% Argon |
| 1/16 | (1.6) | GTAW | 14-16 | 90-130 | 100% Argon |
| 3/32 | (2.4) | GTAW | 15-20 | 120-175 | 100% Argon |
| 1/8 | (3.2) | GTAW | 16-20 | 150-220 | 100% Argon |
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Conrad Welding Supplies is a Top manufacturer and supplier of high-quality AWS Class ER309/309L MIG and TIG Filler Welding Wire in Houston , USA. Specializing in welding solutions, we provide a wide range of products, including coated electrodes, welding electrodes, flux core, MIG & TIG welding wires, SAW flux and filler wires. Known for our reliable delivery and superior customer service, We are committed to offering top-tier welding materials that ensure durability and performance across a wide range of industrial applications. We strive to meet the highest standards, making us a trusted partner for all your welding needs.
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The AWS Class ER309/309L MIG and TIG Filler Welding Wire is extensively utilized for welding different metals, such as stainless steel to carbon or low-alloy steels, and for overlaying surfaces that face high heat or corrosive conditions. It’s commonly found in pressure vessels, heat exchangers, furnace components, structural supports, and refinery equipment. Thanks to its low carbon content, it offers enhanced resistance to sensitization, making it an excellent fit for applications in chemical processing, shipbuilding, and thermal equipment manufacturing. Suitable for both MIG and TIG processes, this wire ensures exceptional weld quality and durability, even in high-stress or corrosive environments.
We provide high-quality electrodes, filler wire, MIG and TIG welding wires to a wide range of industries, including oil and gas, food, marine, petrochemical, power generation, and aerospace.
Conrad Welding Supplies is a leading manufacturer, supplier and exporter of high-quality Coated Electrodes, Flux Core, MIG & TIG wires, SAW & Flux, Welding Wires, and Filler Wires, catering to various industries in Houston , USA
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