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Stainless compatibility with trivalent CCC on aluminum casting
Q. I'm experiencing what I think is galvanic corrosion of a stainless part used in an assembly with a trivalent CCC aluminum die cast part while salt fog testing. Is it truly galvanic corrosion? If so, what is the mechanism?
Matt Byrneengineer - Cleveland, Ohio
July 1, 2008
A. Hi, Matt. I would doubt it since stainless is far more noble than aluminum.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
July 1, 2008
Thanks Ted. I am also going to investigate the possibility of crevis type pitting corrosion. The stainless part is press fit into the aluminum part with very tight tolerances.
- Cleveland, Ohio
July 3, 2008
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