OJ309L00000350F000 - ER309L Stainless MIG Wire .035 Dissimilar Metal Welding Wire

Premium Grade ER309L Stainless Steel MIG Wire

The Oxford Alloys ER309L is a high-quality austenitic stainless steel welding wire designed specifically for the Gas Metal Arc Welding (GMAW) process. This wire is classified under AWS A5.9 as ER309L and is engineered to provide exceptional performance when joining dissimilar metals. The 'L' designation indicates a low carbon content (maximum 0.03%), which is critical for minimizing carbide precipitation during the welding process. This feature significantly enhances the weld's resistance to intergranular corrosion, making it a reliable choice for applications involving elevated temperatures and corrosive environments.

With a diameter of 0.035 inches (0.9 mm), this wire offers a versatile balance between deposition rate and puddle control, suitable for welding on materials of varying thicknesses. It is most commonly utilized for joining Type 304 or similar base metals to carbon or low-alloy steels. Additionally, it serves as an excellent buffer layer when cladding carbon steel with stainless steel, providing a ductile transition zone that prevents cracking. The chemical composition typically includes approximately 24% chromium and 13% nickel, ensuring superior oxidation resistance up to 2000°F (1093°C).

Industrial applications for this wire are vast, ranging from petrochemical plant maintenance to power generation facility repairs. It is also frequently used in the fabrication of heat exchangers, furnace parts, and chemical processing equipment. The wire requires a shielding gas, typically a mixture of Argon and CO2 (98/2 or 97/3) or a helium-rich tri-mix, to achieve a stable spray transfer or pulsed arc. Users can expect a clean finish with minimal spatter and excellent bead aesthetics.

Key Technical Specifications:

• Classification: AWS A5.9 ER309L
• Diameter: 0.035" (0.9mm)
• Tensile Strength: Typically 85,000 - 90,000 PSI
• Yield Strength: Typically 58,000 - 60,000 PSI
• Elongation: Approx. 35%