Quote:
Originally Posted by R68GTO
Aluminized exhaust is basically standard cold rolled steel with some aluminum mixed in for corrosion resistance.
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Metallugically impossible. Aluminum and steel do not bond and are not alloyable. An aluminized exhaust is fabricated from standard mild steel tubing that is hot dipped in aluminum after fabrication. Scratch or weld through the coating and it will rust like any mild steel. The aluminum does not stick to the steel, it sticks to a thin silicon coating applied to the steel which in turn sticks to the steel.