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→13.2.3.3 Bondability
One of the most severe tests is an exposure at a humidity level of 85% RH and at 85°C. At higher porosity levels in the coating the high humidity can lead to corrosion effects on the substrate material from corrosive gases in the atmosphere. For the most severe requirements a simulation test at 85°C and 85% RH is performed over a 500 h exposure time period.
==References==
[[Testing Procedures#References|References]]