Choosing the Best Environmental Test

Looking at environmental testing per GM9540P. Would like to simulate corrosion loss for 5 and 10 year exposure in sub-tropical environment. Can anyone help me choose what test method and duration would be most appropriate?

Choosing an appropriate environmental test properly requires knowledge of your products performance in outdoor exposure. Since you did not indicate the type of product you would be testing, I'd suggest that, in addition to GM9540P, you look at the work done by the SAE Automotive Corrosion and Prevention Committee in conjunction with the Auto Steel Partnership Corrosion Task Force. This effort resulted in a new cyclic corrosion test, SAE J2334. A number of papers have been presented on this test and will be updated at the SAE Congress next week. All of the work, however, has been on painted steel for automotive applications.