Conrad Welding Supplies, located in Houston, USA, is a trusted manufacturer and supplier of AWS Class ER308/308H MIG and TIG Filler Welding Wire. This wire is specifically crafted for welding austenitic stainless steels like 304 and 304H, particularly in high-temperature environments. With a well-balanced composition, it ensures excellent weldability, impressive corrosion resistance, and enhanced creep strength thanks to its higher carbon content. Conrad’s ER308/308H wire is celebrated for its smooth arc stability, minimal spatter, and high-quality weld deposits, making it perfect for critical industrial applications in sectors such as power generation, petrochemicals, and pressure vessels.
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| Classification | AWS A5.9, ER308/308H |
| 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 ER308/308H MIG & TIG Filler Metal Application & uses |
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The ER308/308H filler wire features around 19–21% chromium, 9–11% nickel, and up to 0.08% carbon—more than the standard ER308—to boost high-temperature strength and creep resistance. It typically offers tensile strength in the range of 80–90 ksi while maintaining ductility and toughness even under thermal stress. This wire also provides an excellent bead appearance and weld pool control in both MIG and TIG processes, along with strong resistance to intergranular corrosion and oxidation during high-temperature service.
| Class | UNS | Oxford Alloys |
| ER308/308H | S30880 | Alloy 308/308H |
| c | 0.05 |
| si | 0.46 |
| Mn | 1.65 |
| Cr | 20.45 |
| Ni | 9.85 |
| Other | – |
| Yield Strength | 61,000 psi |
| Tensile Strength | 90,000 psi |
| Elongation | 41% |
| Recommended Welding Parameters | ||||||
| GMAW “Mig Process” | Reversed Polarity | |||||
| Wire Diameter | Wire Feed | Amps | Volts | Shielding Gas | Gas CFH | |
| Short Arc Welding | .030 | 13-26 | 40-120 | 16-20 | Argon+2% O2 | 25 |
| .035 | 13-26 | 60-140 | 16-22 | Argon+2% O2 | 25 | |
| Spray Arc Welding | .035 | 20-39 | 140-220 | 24-29 | Argon+2% O2 | 38 |
| .045 | 16-30 | 160-260 | 25-30 | Argon+2% O2 | 38 | |
| 1/16 | 10-16 | 230-350 | 27-31 | Argon+2% O2 | 38 | |
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Conrad Welding Supplies is a Top manufacturer and supplier of high-quality AWS Class ER308/308H 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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You’ll often find this filler wire used in the fabrication and repair of boilers, heat exchangers, superheaters, and piping systems that operate under intense heat and pressure. It’s particularly well-suited for welding 304H stainless steel in power plants, refineries, and chemical processing facilities. The ER308/308H wire also excels in applications that involve thermal cycling, where extended service life and metallurgical reliability are crucial. Its capability to produce strong, corrosion-resistant welds makes it a reliable choice for demanding stainless steel welding 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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