Re: transit bus frames
Typically they are made of stainless steel welded together in 5 foot sections. I have heard both good and bad about this. On the side of good it is stainless steel. This doesn't mean it won't rust, but it sure does help in the fight against corrosion. On the bad side of things is that the metaleurgy of stainless is not the best for a frame application, nor is the idea of welded sections. I suppose a person could replace a section of their frame easily enough in that it was assembled in sections, but then you're welding stainless, something that exceeds the capabilities of most people, myself included.
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