Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Intro to passivation procedure please
Dear Sir,
I don't have much experience on stainless steel but I would like to asking you about : my tube was stainless steel 316L 0,4micron electropolishing and my tank 316L 0,4micron manual polishing
My boss asking me to passivation the line and the tank.
Could explain to me about this matter and make my line really passive...?
Thanks,
- Jakarta, Indonesia
2005
Electropolishing will passivate stainless steel. Manual polishing will not.
Jeffrey Holmes, CEF
Spartanburg, South Carolina
2005
Electropolishing on a tube will only passivate the outside, but normally you want to passivate the innerside! Passivation is done in either nitric acid or citric acid. Don't ask what is best, it seems to be a matter of religion.
Bo KønigFood industry - Odense, Denmark
2005
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