Electrodeposited-coating (E-coating) is a well-established technique in the automotive industry to protect car parts against corrosion, but its application on welded components can be problematic due to poor adherence onto silicate islands left behind on welds by the GMAW process. Lacking solid E-coating protection, these spots may later act as initiators of rust development when vehicles are exposed to corrosive environments such as humidity, temperature changes, sea winds and de-icing salts. Removal of the silicates is an effective measure, but is costly in highly efficient fabrication lines and therefore undesired. To overcome this problem HYUNDAI WELDING developed the world’s first E-coating friendly welding wire, the SM-70MT. This unique product features ultra-low silicates formation and allows car parts to be E-coated without post-weld cleaning of the weld surface, as illustrated by the photos. It also delivers virtually spatter-free welding along with excellent gap bridging.