ASTM D7091-2022 "Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals"

This specification specifies the nondestructive Measuring method of dry-film thickness for nonmagnetic coatings on ferrous metal surfaces and nonmagnetic and nonconductive coatings on non-ferrous metal surfaces. The content covers the calibration, verification and adjustment steps of magnetic thickness gauges and eddy current thickness gauges. The main points of measurement operations on planes, curved surfaces and different asperity substrates are clarified, and the Measuring location selection, reading recording and reporting requirements are given. Coating thickness can be effectively controlled through standardized operation to ensure that the anti-corrosion and decorative performance of the coating system meets the project regulations. It is suitable for coating mass detection in the field and laboratory.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.