Letter 24068

Electropolish recipe for 420 grade stainless steel

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We have lost our recipes for our electropolisher. Can someone help me with some recipes for 316 grade stainless 420 grade stainless.

Many thanks,

BOB LYE
SURGICAL INSTRUMENT MANUFACTURER - SYDNEY, NSW, AUSTRALIA

Hi, Bob. There are many many different recipes, most based on sulphuric acid or a mix of phosphoric and sulphuric acid. The Electroplating Engineering Handbook has an excellent chapter on electropolishing, and includes some recipes you can try.

If you need qualified technical assistance you might contact Metal Coating Process Corporation, which specializes in electropolishing and conducts training schools. Good luck.

Regards,

Ted Mooney, P.E.  finishing.com Brick, New Jersey