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Galvanic corrosion. It happens with all dissimilar metals but some combos are worse than others. Copper against aluminum will chew thru the aluminum in pretty short order.
This process is why you see sacrificial zinc anodes in water heaters, boats, marine structures, etc. The zinc protects the steel
The more anodic of the metals will corrode first/fastest.
Last edited by cggorman; Oct 26, 2017 at 12:42 AM.
Galvanic corrosion. It happens with all dissimilar metals but some combos are worse than others. Copper against aluminum will chew thru the aluminum in pretty short order.
This process is why you see sacrificial zinc anodes in water heaters, boats, marine structures, etc. The zinc protects the steel
The more anodic of the metals will corrode first/fastest.
Thank You!!
Same thing happened to Statue of Liberty, if I remember right they put UHMW shims between the skin and supports to isolate.
If you plan on using anti-seize, use only the high temp "copper" anti-seize on those exhaust studs. The "silver" will turn into hard glob and won't do the job you intended.
Absolutely on this Post .. Also works for any Anti-Seize needed application so no worries about it just sitting around for High Temp Only applications ..
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