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Difference in the longevity of corrosion resistance between zinc plating and stainless steel

I have an indoor application for a product and was wondering about the difference in the longevity of corrosion resistance between zinc plating and stainless steel.

The product is a set of brackets that hold up a copper plate. Between the plate and the brackets is an insulator, so those two metals never come in contact. Stainless steel hardware connects the three items. I did not know if the hardware would damage the plating over time. They are not removed often, but I figured over time....

Gabe Gassner
- Tulsa, Oklahoma, USA
April 15, 2011

Hi, Gabe.

Zinc plating should last pretty much indefinitely in most indoor applications. Homes and offices are full of zinc plating in non-decorative applications. Still, solid stainless steel would be the premium answer.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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April 18, 2011

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