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Old 18 August 2014, 09:11   #1
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Outboard Anodes

Does anyone know what material outboard anodes are made of?

I'm thinking neither zinc nor even aluminium anodes will protect an aluminium outboard. So what are the anodes such as the power trim anode made of?
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Old 18 August 2014, 10:31   #2
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All of the ones I'm finding are zinc and aluminium.

Some aluminium alloys contain significant amounts of magnesium. I wonder if they use those for anodes...
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Old 18 August 2014, 10:43   #3
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Zinc for salt water and magnesium for fresh.

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