ASTM C633-2013 (2021) specifies a test method for thermal spray coating adhesion or bond strength. This standard evaluates the durability and Reliability of coatings under different environment conditions by measuring the adhesion or bond strength between the coating and the substrate. Thermal spray coatings are widely used on the surface of metals, ceramics and other substrates to improve their wear resistance, corrosion resistance and other performance. This test method provides a standard for measuring coating mass and service life through tensile testing, helping manufacturers optimize the coating process and ensure the long-term Stability and functionality of the coating. The standard provides a scientific test basis for the industry, especially for high-demand industries such as aviation and automobiles.