I've heard rumors of aluminum wheels failing (cracking) after being powder coated. I've heard cases of both cast and forged wheels failing. Unfortunately I do not have any alloy details. According to AMS-H-6088(SAE specification for the Heat Treatment of Aluminum Alloys) most alloys will not anneal until apprx. 650°F. Powder coatings typically cure at or below 400°F and cure for less than 1 hour. Is this heating significant enough to alter the properties of the wheel. Please include a reference if possible.
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