ASTM D903

ASTM D903 is a standardized test method used to evaluate the adhesion or bonding strength of a coating, such as paint or sealant, to a surface. It involves applying the coating to a prepared substrate, allowing it to cure, then pulling on a strip of the coating with a mechanical device until it separates. The test measures how well the coating sticks and resists peeling or detaching. This helps manufacturers assess if their coatings will perform reliably in real-world conditions, ensuring quality and durability of the finish on various materials.