ASTM D 2485-22 is a standard test method for evaluating the performance of coatings used in high temperature environments. This method is designed to accelerate the evaluation of the durability of coating systems in high temperature environments and is particularly applicable to coatings designed for internal or external service. The method consists of two types of testing: Method A for internal service Coatings and Method B for external service coatings. This standard provides standardized test conditions and procedures for the development and quality control of coatings to ensure that they provide effective protection against steel surfaces in high temperature environments during their service life. Persons using this standard should consult relevant safety and regulatory requirements prior to implementation to ensure compliance with applicable safety, health and environment practices.