scope:

This test method describes a non-accelerated laboratory procedure for determining the corrosion rate of metals in contact with treating solutions and related liquids. The results obtained with this procedure are highly dependent on procedure variables and the care taken in performing the work, and may not accurately reflect real-world corrosion rates. Important factors include metal specimen preparation (cleaning), agitation velocity, degree of aeration, post-exposure specimen cleaning, and possibly others. It is critical that appropriate control solutions be included in a test. Comparisons should be made only against those control solutions, with all experimental parameters held constant. A detailed discussion of corrosion test procedure variables is given in NACE Standard TM0169-76 (Item No. 53003, National Association of Corrosion Engineers, P.O. Box 218340, Houston, TX 77218). It is recommended that the firsttime user consult the NACE standard prior to using this AWPA standard. Additional background material and a general discussion of corrosion testing can be found in Fontana.¹

¹Fontana, M.G. 1986. Corrosion Engineering, Third Edition. McGraw-Hill, New York.