The ASTM D5894-21 standard describes a cyclic salt fog/UV exposure test method for painted metals. The test combines salt fog and alternating UV exposure to simulate the aging process of coatings under various environmental factors. This method provides a more realistic reflection of the performance of coatings in actual use and is suitable for testing the corrosion resistance and weathering resistance of painted metals.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
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