The GB/T 30789.1-2015 standard outlines the overall marking system for the aging evaluation of Paints and varnish coatings, covering the evaluation method for the number, size and uniform change in Appearance of defects. The system uses a numerical scale of 0 to 5 to indicate the degree of defect, with 0 indicating no defect and 5 indicating serious defect. The standard provides common evaluation rules and classification methods for evaluating aging defects in artificially accelerated or natural environments, such as Color changes and yellowing. The specific evaluation process and grading ensure accurate description and comparison of coating aging conditions.
| Status | Active |
|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 2015-06-02 00:00:00 | Implementation Date | 2016-01-01 00:00:00 |