The test standard summaries are for general guidance only. Though believed to be accurate at the time of writing, this may change over time. So this information should not be used as a substitute for referring to a complete test standard, at an appropriate revision level.
Note: the terms salt spray, salt mist & salt fog are all in wide spread use within corrosion test standards. In this context they can be considered to be equivalent and interchangeable terms.
Testing Water Resistance in 100% RH
Can be used to test the water resistance of coatings by exposing coated specimens to a high relative humidity at an elevated constant temperature, so that condensation forms upon them.
Test specimens are placed in an enclosed chamber, in which a climate is created that comprises of a heated, saturated mixture of air and water vapour, at a temperature of +38C and a relative humidity of 100%RH. This climate is maintained under constant steady state conditions. The test duration is variable.
For further information on ASTM standards visit; www.astm.com