Originally Posted by
hubcap
We are on the same page with that definition then. But I'm not sure why you think a steel frame could not have a structural failure. I have owned several aluminum and steel framed bikes. The only one of those that ever had a structural failure of the frame was chromoly steel.
Yes! Sometimes steel structures are not welded properly. However, when they are properly welded, its quite difficult to get the welds to break.