Quote:
Originally Posted by sperry
...stupid internet "powdercoating weakens aluminum" rumors. If the 400F temps seen while P/Cing really did ruin wheels, what keeps the wheels from coming apart when my brakes heat up to 1000F?
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I don't know enough about the powder coat process to know for sure one way or the other, and I'm no expert in metallurgy. That said, I would be at least be cautious and read up before potentially screwing up the heat treatment on the wheels with a 400F process. As far as I know the annealing temps for most Al alloys are in a range of like 300-700F, applied over a few hours.
And even if you have a 1200F brake rotor temp, that doesn't mean the wheel will be 1200F, the wheel temp will be much lower (Al melting points are like 900-1200F).