Cosmetic Corrosion Lab Test
SAE J 2334 Method A has been field correlated by comparisons between laboratory test results and corrosion in real world applications. 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.
Test specimens are placed in an enclosed 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. This is followed by 15 minutes immersion in (or a direct spray of) salt water at ambient temperature.
This is 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.
