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Old 07-21-2008
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Pushpit Materials

Hi all,

Was wondering if 304 Stainless tubing, welded, not seamless, would be sufficient for building my pushpit. I would prefer 316, but I have a few sticks of this laying around the shop here.

Thanks!
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Old 07-21-2008
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I wouldn't recommend using 304 stainless in a marine application, particularly if the tubing is welded, rather than seamless. The welds would be more subject to corrosion than the rest of the material, and the 304 stainless also has issues with chloride ion stress cracking in a marine environment. This could lead to a pushpit that could easily fail without much in the way of warning signs. Finding out that the pushpit has corroded and weakened will usually happen when you need its support and safety most.
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