I going over the bonding system and getting ready to replace some corroded terminals where needed. I went to Weat marine and bought the normal Anchor Nylon Ring terminals. After crawling down the to the bronze steering mount starboard side aft, I noticed the old terminal ring looks bronze.. i have read a few post in here about not using any type of metal on bronze except bronze.. Question, does that apply to the terminal rings for the bonding system? Will the regular ring terminals work or will I have to purchase special terminal rings? Any help, input is appreciated..
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The bronze part and the zinc-plated connector is not a great combination.
According to the table there is about 0.7V potential difference between the two metals, so the zinc will be sacrificing itself when wet.
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wingless,
Thank you for the valuable info.. I will get the bronze terminals.. Cheers!
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Most are tin-plated brass connectors. I don't know where Wingless is getting that zinc part. If that were the case EVERY connector on your boat would fail (they're all plated... and therefore dissimilar metals).
I think they are simply tinned (or nickle alloy plated) connectors and will be fine for bonding.
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I just called WM and they said they are tinned and that is what is commonly used.. I remember reading some threads about the bronze sea strainers and only using bronze parts etc, so it got me thinking which is dangerous... thanks for the info..SomeSailor wrote:
Most are tin-plated brass connectors. I don't know where Wingless is getting that zinc part. If that were the case EVERY connector on your boat would fail (they're all plated... and therefore dissimilar metals).
I think they are simply tinned (or nickle alloy plated) connectors and will be fine for bonding.
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Tin is not zinc and will pose no hazard to your connection. In contrast, it will keep the REST of the connector from corroding away.
As far as the galvanic series is concerned; tin, copper, brass, bronze and silicon bronze are nearly identical. You'll be fine.
What gets some in trouble is they use stainless steel (thinking they're doing the right thing...) on bronze strainers and such...
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