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Ted Mooney, P.E. RET
Pine Beach, NJ

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Need Passivation alternative

Any idea in how to passivate a inner surface round stainless steel 316 tank size ~36m�. Requirement specified as dipping with 35% Nitric acid for 16hours. This will be very costly of the 36m� Nitric acid. Any alternative way?

KK Woon
Engineering - Johor Bahru, Johor, Malaysia
2004

We can suggest passivation method with solution based on low concentration of phosphoric acid. The solution is reusable with minor correction. Contact us for more details.

Anna Berkovich
Russamer Lab

Pittsburgh, Pennsylvania

2004

You can get excellent results using citric acid based gelled products that are available on the market. These can be sprayed, brushed or rolled onto the surface to attain excellent results without great expense and with the hazards of mineral acids.

Lee Kremer
Stellar Solutions, Inc.

McHenry, Illinois

2004

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