SAE J2527-2004 specifies operating procedures for accelerated exposure testing of automotive exterior materials using radiated Xenon-arc devices. The standard is based on SAE J1960 test parameters and covers specimen preparation, test duration and performance evaluation methods. The main purpose is to simulate the aging of automotive exterior materials under extreme environmental conditions, including sunlight, heat and moisture. Test equipment must meet specific radiation intensity, black pancl temperature and Humidity control requirements, and should provide detailed spectral power distribution data and standard reference materials. This standard also addresses detailed requirements for equipment calibrating and maintenance to ensure the accuracy and repeatability of test results.