SAE J2334

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.

Corrosion "coupons"

The use of corrosion "coupons" is included in the test procedure as a means for monitoring corrosive activity within a given chamber and helping maintain inter-test consistency across testing establishments. A minimum of 6 corrosion coupons, each sized 25.4 x 50.8 mm and made of AISI 1006-1010 steel, are used. The coupons are cleaned and weighed in accordance with the procedure described in J2334 and mounted in a non-metallic rack. One coupon from each end of the rack is removed, cleaned, and re-weighed after every 20 cycles. At the time of writing, no target mass loss numbers for each cycle or end-of-test mass loss have been published but the accumulation of this test data and its eventual analysis is expected to result in the availability of index values by which test chamber performance can be monitored.