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Prowler Junkie

From:Texas USA
Registered: Apr 2003
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posted 06-25-2012 09:23 AM                  

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Some of us have seen some corrosion on our control arms (that white powdery looking stuff) and speculated it seemed to be worse for owners near the beach/salt air, or maybe from being in more humid environments.
Here's what I found online today looking for something else...

Contact between austenitic stainless steels (used where corrosion resistance is required) and zinc or aluminium may result in some additional corrosion of the latter two metals. This is unlikely to be significant structurally, but the resulting white/grey powder may be deemed unsightly. Bimetallic corrosion may be prevented by excluding water from the detail (e.g. by painting or taping over the assembled joint) or isolating the metals from each other (e.g. by painting the contact surfaces of the dissimilar metals). Isolation around bolted connections can be achieved by non-conductive plastic or rubber gaskets and nylon or teflon washers and bushes.

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