passivation of 300 series stainless steel
passivation of 300 series stainless steel
(OP)
Does anyone have experience with "WEDAC", "Citrisurf", or other passivation chemicals, for use in field construction?
If so, what are the pros, cons, and watch-outs?
Thanks,
Don
If so, what are the pros, cons, and watch-outs?
Thanks,
Don





RE: passivation of 300 series stainless steel
“Citrisurf” is Citric Acid based product that allows you to passivate S/S without the use of Nitric. The pitch is that it replaces QQ-P-35(a passivation procedure using nitric acid) with ASTM A967
which allows either HNO3 or Citric Acid. For very corrosive atmospheres it still takes HNO3 passivation to be effective. Citric acid based cleaners can be quite effective in some cleaning application but I’ve heard of Painting problems that required a switch to a H3PO4 based material .
Can you post a little more information as to what you are trying to accomplish?
RE: passivation of 300 series stainless steel
We are evaluating these products for post-weld heat tint removal, and passive layer restoration; both with and without mechanical removal.
Don
RE: passivation of 300 series stainless steel
RE: passivation of 300 series stainless steel
http://www.competitionchemicals.com