Originally Posted by imblind
An old post on this forum led me to a site
. It says that in harsh high humidity environments (I imagine a water loop would loosely fit this category) galvanic corrosion can occur with only a anodic index difference of .15V. Silver and copper/nickel are .15V away or farther from each other. Does this mean that a silver kill coil could result in galvanic corrosion? Thoughts anyone?
I like that site. But if you read it carefully, the .15V is for the harshest environment, like outdoor seawater. For a controlled environment of distilled, which starts non-conductive and never gets as electrolytic as seawater, consider it .50V. So I don't think the site or table are wrong.
Other posters have reminded us that seawater is different than fresh water (our loop is more like a lake than the ocean). And that reports of galvanic corrosion in the absence of Aluminum in water-cooling are rare.
So I think you were on the right track but just over-estimated the harshness of our loop coolant. That's a long way of saying everyone is correct and to avoid Aluminum.
Here is another source
if you want read more. Good luck.