Coastal Marine Corrosion of Bolts

Q: I’m running a coastal power operation and am having some corrosion on my stainless steel bolts that are outside. Can salt air do that? And any suggestions on a material. I need high volume so I need to go with something economic.

A: Salt air can cause corrosion. If you parts are only exposed to salt air and not water you won’t need extreme protection but typical steels will not do the trick. We would recommend Super Duplex 2507 bolts which are ideal for your situation. It offers excellent resistance to chloride corrosion such as pitting and crevice attack which salty air could produce. In addition, they offer a very respectable 82 KSI in yield strength.
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