Correlation of Two Accelerated Corrosion Test Methods to the Actual Exposure of Finished Panels

The standard accelerated corrosion test method is the salt spray test, but there is some question as to its correlation to actual exposure. Coated panels were tested using two accelerated corrosion test methods (salt spray and scab corrosion) and the results compared to panels exposed at Galveston, TX. The tests results showed that the scab corrosion test provided a better simulation of actual exposure than the standard salt spray test method and that the test results from the scab corrosion test could be correlated to actual exposure results.