Accelerated testing: Correlation between four accelerated tests and five years of offshore field testing

A two-phase investigation was carried out identify test methods that can be used to assess the corrosion protection performance of coatings in marine atmospheres. The overall correlation factor for average scribe creep between the NORSOK test and the field test was 0.62 in the first series and 0.76 in the second test series. The correlation factors for the salt spray test and the cyclic salt spray test were both 0.34. The NORSOK test and the Volvo test had better correlation to the results from the field test than the salt spray test and the Mebon Prohesion test.