Flash Rust

Posted on 03. Mar, 2009 by in Flash Rust

Dust is to paint as grease is to tires.

Every thing you wanted to know about flash rust and whether to paint over it.

6 Responses to “Flash Rust”

  1. Jack

    08. Nov, 2010

    I am looking for a way to test flash rust inhibitors in a humidity chamber. I have yet to find a standard that covers this topic. I’ve read many of the ASTM humidity tests and most are for painted surfaces. I am trying to determine what temperature and RH to run a test for 24 hours. Does anyone know of such a standard test?

  2. lydia frenzel

    25. Apr, 2011

    Hi Jack- You understand that “FLASH RUST” is the oxidation (rust) during surface preparation that occurs as the carbon steel is drying.

    The classic test for inhibitor is to place the steel surface into immersion of water with the recommended level of inhibitor. Iit is a comparison test. YOu can put it at the temperature that you expect to experience in your field conditions.

    SSPC has a standard method for producing uncontaminated rusted steel panels. This method , Test Panel Preparation, Method NO. 1, Uncontaminated Rusted Steel, can be used for your comparison, It was used to prepare Grade C rust on panels so that paints could be put on and the performance could be evaluated.
    In summary- they clean with solvent, dry blast to near white, and place in an ASTM G 85, Annex A.5 cyclic chamber, 1 hour wet and 1 hour dry.

    I would think that you would get comparison results in 24 hours.
    The total time is up to you. YOu should be comparing a known panel without any inhibitor to panels with the inhibitor.

  3. Peter Morgan

    04. Nov, 2014

    Hi Lydia, I find your article very interesting. Flash rusting to me is new territory, but one I hope to explore thoroughly over the next few years. I will keep my eyes on the Flash Rust website and appreciate all the good work that has gone on in the US. Do you have copy of the NSRP project report that you could forward to me please? Best wishes, Peter

  4. Lydia Frenzel

    06. Nov, 2014

    Pete- Steve Cogswell, BAE Systems SE SY, Jacksonville, was chair of the NSRP program. YOu can get project from nsrp.org site.

  5. Bill Duncan

    04. Nov, 2015

    Hello Lydia, I have been reading your many years of involvement in the waterjetting industry and rust control, and have been very impressed. I am very surprised that your name had not crossed my desk much earlier, as I have been involved in piping corrosion since 1981..

    I have always recommend waterjetting to my commercial building clients in need of pipe cleaning, and have had tremendous success with its results.

    Currently I am writing an article on the substantially greater vulnerability of newer carbon steel pipe to that produced decades ago, and was looking for permission to use a photo of the side wall of the Titanic as an illustration to this article. Furthermore, I just wanted to make contact and express my appreciation to all you efforts in this field. Yes there is excellence in some work but it becoming harder and harder to find.

    Thank you, Bill

  6. admin

    20. Nov, 2015

    Bill- I didn’t see your email earlier. Yep- I am active in NACE, SSPC, NSRP- Surface Prep and Coatings Panel, and WJTA-IMCA. Not so well known in pipeline. Yes- I have some photos of the Titanic “Big Piece” that was conserved with WJ some years back. Email me at lydiafrenzel@advisorycouncil.org and I can send you a couple of jpegs, and a few article written for the general public.
    The other sites to look at are waterjetting.org and advisorycouncil.org
    Lydia Frenzel

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