Can any welding method be used on unibody vehicles?
. No. The steel used in structural components on unibody cars are commonly referred to as high strength (HS) and ultra high strength (UHS). Without getting into the metallurgy of these steels, they are used because of their high strength to weight ratio. The welding method and procedure is well defined by the vehicle manufacturer, and hence, I-CAR. Also restricted is the amount of heat that can be used in the straightening, repairing or welding of these components.
