[PSUBS-MAILIST] Aluminum thru hulls

[Sean T. Stevenson via Personal_Submersibles]

Dissimilar metal corrosion. Aluminum will form a galvanic cell with carbon steel. The only way to prevent this is to protect them with sacrificial metal anodes made of zinc or magnesium.

Sean

-------- Original Message --------
On Dec. 31, 2020, 17:40, Brian Cox via Personal_Submersibles wrote:

> Hi All, Happy New Year ! Can anyone tell me why I can't make all of my different thru hulls out of aluminum ? Fittings that will be potted and so forth for electrical .
>
> Thanks,
>
> Brian
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