Definition - What does Film Integrity mean?
Film integrity is the qualitative property of a coating to be free of defects, cracking or a lack of uniformity. It is used as an indicator of the protective characteristics of a metal or other corrosion-prone material.
Corrosionpedia explains Film Integrity
Film integrity can be examined to determine the likelihood of stress corrosion cracking. A material with less integrity has a greater probability of experiencing stress corrosion cracking and vice versa.