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Old 05-13-2008, 09:43 PM
  #6  
zipper06
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RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default Re: identifying steel for tubing

Originally Posted by dgordner
Is there any way of telling the difference between seamless mild steel and (chrome molley)? Spelling? I think we have a karter in our organization who took the kart that was made of mild steel and had it duplicated with chrome molley. (spelling). I am the tech official and am getting hammered by the other competitors to check the kart but I do not know what to look for.
You have a tough problem, without cutting a piece of the tubing and having it annalized by a lab.
Both mild steel and dom (1010) will have evidence of a weld seem, the difference there is that DOM is draw over a mandrel after butt weld IE leaving no seem on the inside.
I've been a mechinest for 50 yrs. and the way we can tell is spark test it. By this i mean take a piece of mild steel and put it up to a grinding wheel. The mild steel will spark more red, while the crome molly will spark more to the white side. but you still need some of the material that the chassis is made from.

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