How Much Heat can Carbon Fiber Withstand?

How much heat can carbon fiber stand?




I'm modifying the brake ducts on my car - originals were Lola carbon fiber two halves cemented together. I'm extending the front scoops - rectangular aluminum box section but curved in plan view. To make sure they fit properly over the carbon fiber I'm going to Cleco them in place and have my expert welder stitch weld - then fully weld off the carbon fiber later.




How near to the carbon fiber can he weld - that's aluminum, not steel - I assume TIG.




Thanks