Tom Ring wrote:
chuck wrote:



The copper alloys widely used in wires are quite resistant to
corrosion. Even when immersed in pure seawater, their corrosion rate
there is on the order of 0.025 mm/year. Unfortunately polluted waters
can increase that rate.


What then, would be polluted water? Salt water seems polluted enough.

tom
K0TAR




Copper piping and water jackets are often badly corroded when decaying
plant and animal mater and sediment are dormant in the pipe. This is
likely to be more troublesome in marinas and harbors than in the open
ocean (Sargasso Sea excepted, maybe).

"Particularly detrimental are sulfate-reducing bacteria in bottom mud
and sediment and on the natural sulfates in seawater." from "The
Boatowner's Guide to Corrosion" by Everett Collier.

73,
Chuck
NT3G

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