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Nitric acid passivation procedure

August 5, 2008

hi I am working in sterile area I want to know the procedure of passivation of new stainless steel GRADE 316L holding vessels of capacity 100 liter with nitric acid also give the concentration and volume of final solution required for passivation.

THANKS

KHURRAM AHMED
ASSISTANT MANAGER - KARACHI, PAKISTAN

Nitric acid passivation procedures are easily found in the old mil spec QQ-P-35C [link is to spec at TechStreet] or either of its replacement specs ASTM A-967 [link is to spec at TechStreet] or AMS-2700 [link is to spec at TechStreet].

You may also use citric acid based passivation.

Ray Kremer Stellar Solutions, Inc. Algonquin, IL, USA