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"Galvanic Corrosion - Stainless Steel Rod with Carbon Steel Nut"





March 2, 2010

Will a carbon steel nut on a stainless steel rod act as an anode to help prevent the rod from corroding if they are submerged in seawater?

I read another similar post here that used an example of steel wool on a stainless steel sink causing it to rust. However, it seems that the carbon steel nut would act as a sacrificial anode and protect the rod. Is that not correct?

Thanks,

Craig

Craig Stewart
student - Winston-Salem, North Carolina
^


March 3, 2010

Interesting question, Craig. It's nice to see students thinking. Yes, a plain steel nut should serve as a sacrificial anode on a stainless steel rod, but probably not a very practical one because it's life would be short.

I think steel wool causes rusting of stainless steel by imbedding small particles of steel into it.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
^

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