Conrad Welding Supplies, a trusted manufacturer and supplier located in Houston, USA, specializes in high-quality Stainless Steel ER-309LMo Filler Wires. These wires are specifically designed for tough welding tasks that involve dissimilar metals and stainless steels, especially where enhanced corrosion resistance is a must. They offer fantastic arc stability, minimal spatter, and outstanding weld integrity. Thanks to the inclusion of molybdenum, Conra’s ER-309LMo wires provide better resistance to pitting and crevice corrosion, particularly in environments rich in chlorides and acids. Catering to a wide range of industries across the USA, Conrad Welding Supplies delivers reliable filler metal solutions that are perfect for structural, pressure-related, and corrosion-sensitive fabrication and repair projects.
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Classification : AWS A5.9 ER-309LMo, A5.9M:2006
Soft Wire Diameter Range : 0.06mm – 2.30 mm
Hard Wire Diameter Range : 0.30mm – 3.00mm
Diameter : .035”, .045”, 1/16”, 3/32”, 1/8”, 5/32”
Length : 36″ (914mm) Customized
Materials : ER-309LMo Stainless Steel
Form : Wires, Filler Wires, Coil Wires, Welding Wires
The Stainless Steel ER-309LMo Filler Wires are made up of about 23% chromium, 13% nickel, and 2.5–3% molybdenum, with a low carbon content to minimize carbide precipitation. This unique blend results in austenitic weld metal that boasts excellent resistance to intergranular corrosion, pitting, and cracking. These wires also exhibit strong mechanical properties, featuring a tensile strength of around 570 MPa and good ductility. Suitable for both MIG and TIG welding processes, ER-309LMo wires ensure stable arcs and high-quality welds, with a consistent bead appearance and metallurgical compatibility across various base metals.
| Grade | C | Cr | Cu | Fe | Mn | Mo | Ni | P | Si | S |
| SS ER-309LMo | 0.012 | 21.3 | 0.09 | Balance | 1.40 | 2.60 | 14.8 | 0.02 | 0.34 | 0.002 |
| STANDARD | AWS | UNS | DIN | Class | EN | BS |
| SS ER-309LMo | A5.9 | S30986 | 1.4459 | ER309LMo | 23 12 2L | ~309S95 |
| Tensile Strength (psi) | Yield Strength (psi) | Percent Elongation in 2” |
| 88,000 psi (610 MPa) | – | 37% |
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Conrad Welding Supplies is a prominent manufacturer and supplier of top-tier Stainless Steel ER-309LMo Filler Wires in Houston , USA. We specialize in providing advanced welding solutions and offer a wide range of products, including coated electrodes, welding electrodes, flux core, MIG & TIG welding wires, SAW flux, and filler wires. Known for reliable delivery and outstanding customer service, we are committed to offering high-quality welding materials that ensure durability and optimal performance for various industrial applications. Our dedication to excellence has made us a trusted partner for all your welding needs.
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You’ll find Stainless Steel ER-309LMo Filler Wires being widely utilized in sectors like chemical processing, power generation, marine, pulp and paper, and petrochemical industries. They are perfect for welding stainless steel to carbon or low-alloy steels, creating buffer layers before overlay, and joining high-alloy stainless grades in corrosive settings. Common applications include pressure vessels, storage tanks, heat exchangers, and structural components that are exposed to chlorides, acids, or high temperatures. The addition of molybdenum significantly boosts corrosion resistance, making ER-309LMo the go-to filler wire for fabrication and repair in challenging industrial and coastal 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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