Quote:
Originally Posted by MechEngVT
In the inevitable presence of oil as one would have with a drain plug galvanic corrosion will not be a concern within double the design life of the vehicle. Future designers and engineers should be aware that it's not ideal and there are risks, but the value of the benefits vs. the costs needs to be considered.
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It's not so much the corrosion, it's steel against relatively soft aluminum. The 'gents at Lockheed throw around the term galling, but I'm not convinced that's the right term given that galling is usually referenced to cold/pressure welding when machining...