Forney Mild Steel Mig Wire, 0.030 In. 2 Lb. is a high strength mild steel MIG (GMAW) welding wire designed for superior performance in 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. Please note, it is not for aluminum engines. For optimal results, use with Argon/CO2 shielding gas and DCEP reverse polarity. With a tensile strength of 70,000 psi and a distinctive yellow color code, this wire is available in various diameters and weights to suit your specific needs. Model Number: 42291