Forney Mild Steel Mig Wire, 0.024 In. 2 Lb. is a high strength mild steel MIG (GMAW) welding wire designed for auto body repair and fabrication on most ferrous metals. This wire contains a high level of manganese and silicon, ensuring a superior weld even on rusty or dirty steel surfaces. It produces a smooth bead that requires less grinding, making your welding projects more efficient and clean. Please note, it is not for use on aluminum engines. The wire requires Argon/CO2 shielding gas and is used with DCEP reverse polarity. With a tensile strength of 70,000 psi, this welding wire is reliable and robust for various applications. The product comes in a convenient 2-pound box with a yellow color code for easy identification. Model Number: 42290