Steel rust protection with high surface cleanliness requirement 1

[Andon]

Dear Community,

It is a new project I am currently working on and I have faced a very interesting requirement, which I personally haven't thought of being technically feasible. But I have been proven wrong.

What is all about: I have two steel parts, which have to be made of ASTM A29 12L15/12L14. Both materials rust immediately after being cleaned, therefore rust protection is something I can't go around. In addition there is a requirement (because of a further process) that surface pressure should not be above 40mN/m, which itself excludes most common corrosion prevention strategies and oil-based rust protection can't be taken into consideration.
Nickel/Zink plating won't be an option due to various project-related reasons.

My current idea would be to use some kind of water-based rust inhibitors, but since I am new to this field I would like to see if anyone as a better suggestions and maybe has make experience with some specific products.

Thanks!

 

[EdStainless]

there are good water based corrosion inhibitors.
There are also vapor phase inhibitors, they leave a little residue but very little.
There is always the option of keeping the parts VERY dry. Usually done with warm dehumidified air.
But it could easily be done with warm pure nitrogen (I actually did this once).

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P.E. Metallurgy, Plymouth Tube