Grainger carries a large stock of MIG welding wire and flux core welding wire to meet your welding needs, including aluminum, carbon steel, copper-coated mild steel, stainless steel and more. Choose from various diameters of wire for different welders and welding projects. You’ll also find flux-cored welding wire (FCAW) here. Shop Grainger today for the MIG and flux core welding wire that can help you get the job done right. Our industry experts can help you find the right welding equipment and are available 24/7 to answer your questions.