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Electropolished vs. mass finished stainless steel

I want to change from electropolish of stainless steel 316L bars to Mass finishing (3 stage -ceramic, plastic, corn).I have already proved I can get the required bright polish finish.
Are there are metallurgical concerns I should take into account or anything else which should deter me from changing?

Alan Eire
Manufacturing - Ireland
February 7, 2011

Hi, Alan. Things to consider include the fact that electropolishing is a very competent passivation method, whereas your mass finished bars will not be passivated. Plus, electropolishing leaves a smooth surface like ocean swells because the asperities are dissolved away, whereas mechanical finishing of any variety leaves a plowed field effect.

This does not mean that you shouldn't make the switch, but it does mean that serious testing is required first. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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February 7, 2011

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