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Old 08-01-2012, 18:46   #1
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Stainless rivets in Aluminum

I did a search and found some info on what i was looking for. now I am looking for some feedback. I am wanting to put ss rivets in place of aluminum rivets in my boom(rear boom sheeting and the gooseneck). I purchased some tef-gel and intend use liberally...What i am looking for is how they( rivets, aluminum and corrosion) stood the test of time. Many (not all)of the posts were from 2008. thanks for any and all info
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Old 08-01-2012, 18:55   #2
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Re: Stainless rivets in Aluminum

monel
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Old 08-01-2012, 18:58   #3
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Re: Stainless rivets in Aluminum

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Originally Posted by cat man do View Post
monel
Thank you. i read that in my research and was pretty confused, some say use it others say when put with aluminum it will cause corrosion faster than ss
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Old 08-01-2012, 19:05   #4
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Re: Stainless rivets in Aluminum

I have used S/S and Monel (prefered) rivets in my boom and mast sucessfully for over 20 years (in one cruising boat that spent a lot of time in warm waters). Tef Gel, Lanocote, Neverseze, and Locktite all worked well for me. I always use Mylar tape to insulate any fitting between the two surfaces. The "goop", regardless of which aforementioned variety was used, was liberally applied to the rivet before fastening.

I would make sure that dirt or dried salt did not accumulate for long periods at the interface edges of the fittings and mast or boom. As a result, there has been no visible sign of corrosion. Often I drill and tap for 1/4 x 20 (would prefer a finer thread yet fine thread 1/4 inch fasteners are not always readily available) or 10 X 32 (way better than the usual 10 X 24) fasteners which are, of course, easy to remove and examine for any corrosion to the aluminum. I have never had difficulty removing such fasteners by using good sealant (never silicone products) and ALWAYS have difficulty removing any fastener previously installed by others who did not use a good sealant, even after only several months.

Remember that all aluminum is just "waiting" to return to its natural state: a white powder. Keeping other metals and chemicals away from aluminum surfaces helps ensure a metallic state. With good insulators and sealants you should have no trouble.
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