GB/T 43316.6-2023 Specifies the slow strain rate method for the determination of environmental stress cracking (ESC) resistance of plastics. This standard applies to a variety of plastics, explains the principle of the slow strain rate method in detail, and strictly stipulates the test equipment, sample prepative, loading method, environmental conditions control and data processing. Operating according to this standard, the ESC resistance of plastics can be accurately determined, providing a key basis for the selection of plastics in outdoor, chemical and other fields vulnerable to environmental stress, and helping to improve the service life and Reliability of plastic products.