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Topic: Stainless steel corrosion (Read 1904 times)
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Michael Rogers
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Reading the December 2008 \\\\\\\\\\\\\\\"Gaffers Log\\\\\\\\\\\\\\\" (the Newsletter of the Old Gaffers Association), I was rather startled to read, in an article on corrosion by a marine surveyor, that stainless steel corrodes in situations where it is deprived of oxygen - a phenomenon referred to as \\\\\\\\\\\\\\\"crevice corrosion\\\\\\\\\\\\\\\". Examples given were stainless steel keel bolts where they pass through the hull, and even plastic covers over standing rigging.
This is presumably not a potential problem which should be of concern in our particular kinds of boat building/maintenance - is it ?! There are several bits of stainless steel \\\\\\\\\\\\\\\"buried\\\\\\\\\\\\\\\" in my boat, where I doubt that they get much oxygen. I would prefer them not to corrode! Should they be dug out and replaced with bronze, for example?
Expert advice, and if possible reassurance, would be much appreciated!
Michael
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Craic
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... Expert advice, and if possible reassurance, would be much appreciated! Certainly no expert advice, but reassurance: I never ever had stainless steel screws or bolts failing in any of my boats for 25 years, and that also regardless of the grade of the stainless steel. But I have seen a lot of brass screws and bolts grown brittle. I will stick with stainless steel screws and bolts, but maybe oftener pick the more expénsive \\\'V4A\\\' material stuff which is decidedly marine grade. |
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