Boron steel ???

[John Buchtenkirch]

Kind of a question for guys still working in our sister trade, the auto body business. I ran into a body shop owner I used to do frame and heavy uni-body work for. He was telling me the boron steel they are using in the newer uni-body cars cannot be mig welded, if you do the area around the plug welds will crack. I have another friend in the collision trade that took the classes and is a ICAR certified welder. He claims when he took the ICAR classes there was no mention of this ban on mig welding boron steel. Can anyone shed some light on this subject ? ~ John Buchtenkirch