ASTM D6991-17(2022) PDF

Scope: 1.1 This test method covers the procedure for measurements of internal stresses in organic coatings by using the cantilever (beam) method. 1.2 This method is appropriate for the coatings for which the modulus of elasticity of substrate (Es) is significantly greater than the modulus of elasticity of coating (Ec) and for which the thickness of substrate is significantly greater than thickness of coating (see Note 7 and Note 8). 1.3 The stress values are limited by the adhesion values of coating to the substrate and by the tensile strength of the coating, or both. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and to determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D6991-17(2022) Referenced Document

ASTM D7091 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
ASTM D823 Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels

2022 ASTM D6991-17(2022) Standard Test Method for Measurements of Internal Stresses in Organic Coatings by Cantilever (Beam) Method
2017 ASTM D6991-17e1 Standard Test Method for Measurements of Internal Stresses in Organic Coatings by Cantilever (Beam) Method
2017 ASTM D6991-17 Standard Test Method for Measurements of Internal Stresses in Organic Coatings by Cantilever (Beam) Method
2005 ASTM D6991-05(2010) Standard Test Method for Measurements of Internal Stresses in Organic Coatings by Cantilever (Beam) Method
2005 ASTM D6991-05 Standard Test Method for Measurements of Internal Stresses in Organic Coatings by Cantilever (Beam) Method