Cosmetic Corrosion Lab Test
The SAE J 2334 Method B procedure has been field correlated, so it is claimed that the results obtained should correlate well to those obtained due to natural exposure, under severe corrosive conditions. It can therefore be used as a validation and development tool for automotive paint systems. This test is cyclic in nature, i.e.; test specimens are exposed to changing climates over time.
SAE J 2334 has three methods of achieving the standard, this page is describes the procedure described in Method B.
The test specimens are placed in an enclosed cyclic corrosion chamber and exposed to a changing climate that comprises of the following 3 part repeating cycle:
•6.0 hours exposure to a water fog/condensing humidity climate of 100%RH at +50C.
•followed by 15 minutes or a direct spray of salt water at ambient temperature to thoroughly wet the test samples
•followed by 17 hours 45 minutes of air drying in a climate of 50%RH at +60C.
The number of cycle repeats and therefore the test duration is variable.