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--></style><title>Re: [Alberg30] Stainless
Corrosion</title></head><body>
<div>Crevice corrosion starts when you have water but no air if I
remember correctly. So, eliminate the water or provide air. If
you can see corrosion, the big danger is what is hidden at the
microscopic level, ready to break under stress.</div>
<div>Don't be cheap, replace the bolts, there is no safe way to stop
it. Make sure you rebed the bolts properly, overdrilling the holes and
refilling them with epoxy, then drilling to size and using a suitable
bedding compound. That eliminates the water. By the way, if there is
water in the deck causing corrosion, what sort of shape is your core
in? Have you checked?</div>
<div>Here is what Calder says: "...if stainless steel is used in
an area where stagnant water can collect, sooner or later its
passivity (me: resistance to corrosion) will break down and it will
become active (normally in isolated pinholes and crevices)", page
135, Boatowner's Mechanical and Electrical Manual.</div>
<div>Good luck...</div>
<div><br></div>
<div>Wally Moran</div>
<div><br></div>
<blockquote type="cite" cite><font face="Arial" size="-1">Does anyone
know a way to avoid crevise corrosion in stainless steel bolts going
through a deck?</font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1">Once the
corrosion starts, is there anyway to stop it, short of replacing the
bolts? (I'm being cheap here, but want to be safe. the bolts in
question hold my mast step to the deck. 1/2"D X ~6" long and
definately show corrosion)</font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1">Thanks for
any input,</font></blockquote>
<blockquote type="cite" cite><font face="Arial"
size="-1">Brian</font></blockquote>
<div><br></div>
<div><br></div>
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<div>The gods do not deduct from man's allotted span the hours spent
in sailing. Anon<br>
www.georgianbaysailing.ca for interesting reading for sailors</div>
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