Water Resistance and Humidity (ASTM D 870, ASTM D 2247)
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ACCELERATED LIFE TESTING
ACCELERATED LIFE TESTING
Touchstone performs corrosion testing and accelerated life testing of virtually any material or device. Among the tests offered are:
- Cathodic Disbondment (ASTM G 80, G 95)
- Cleveland Condensing Humidity (ASTM D 4585)
- Corrosion Potential (ASTM G 69)
- Fluorescent UV (ASTM G 53)
- Paint & Coatings Tests
- Pressurized, Accelerated Life Testing
- Pressurized Testing of Heat Exchangers (Radiators, Evaporators and Condensers)
- Test Panel Evaluation (ASTM D 1654)
- Water Resistance and Humidity (ASTM D 870, ASTM D 2247)
SALT FOG AND SALT SPRAY TESTING
- CASS – Copper Accelerated Acetic Acid Salt Spray (ASTM B 368)
- Salt Spray (Salt Fog) (ASTM B 117)
- ASTM G85 Tests
Customized Environment
Water Resistance Testing of Coatings in 100% Relative Humidity (ASTM D 2247)
Water resistance testing of painted or coated panels is accomplished by placing them in an enclosed chamber containing a heated, saturated mixture of air and water vapor. The temperature of the chamber is usually maintained at 100° F (38° C). At 100% relative humidity, a very small temperature difference between the specimen and the surrounding vapor causes condensation to develop on the specimen. Any effects such as color change, blistering, loss of adhesion, softening, or embrittlement are observed and reported. In a modification, TRL installed a cooling apparatus to the back side of test samples to insure significant condensation.
Water Resistance of Coatings Using Water Immersion – ASTM D 870
ASTM D 870 covers the procedure for testing the water resistance of coated specimens. Painted or coated panels are totally or partially immersed in distilled or deionized water in a corrosion-resistant container or tank. The water bath temperature is usually maintained at 100° F (38° C). The water is recirculated or aerated to prevent stagnation and oxygen depletion. Test panels are evaluated for blistering, softening, loss of adhesion, etc.
Reference: ASTM D 870 Standard Practice for Testing Water Resistance of Coatings Using Water Immersion