ASTM D6279-20
Standard Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings

Standard No.

ASTM D6279-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6279-20

Scope

1.1 This test method covers procedures for evaluating the relative mar resistance of a high gloss coating applied to a flat, rigid surface. Wet rub and dry rub abrasion tests are described. To fully characterize a coating’s mar resistance, both tests should be run. NOTE 1—Dry abrasion mar resistance can also be evaluated by using Test Methods D6037. If a very highly mar resistant coating is being evaluated, Test Methods D6037 will generally provide the better performance discrimination than the dry rub test described here. However, if the equipment described in Test Methods D6037 is not available, the dry rub test described in this test method affords a reasonable alternative. The dry rub test is also useful for evaluating coatings that are not highly mar resistant. 1.2 Mar resistance is assessed by measuring the gloss of the abraded and unabraded areas. Mar resistance is directly related to the coating’s ability to retain gloss in abraded areas. NOTE 2—The mar resistance values obtained by this test method have no absolute significance. They should only be used to derive relative performance rankings for test panels that have been prepared from the series of coatings that are currently being evaluated. If mar resistance values are quoted between laboratories, it is essential that a common standard be measured and that the values be compared to that standard. Even then, the values should be used with caution. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 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 determine the applicability of regulatory limitations prior to use. 1.5 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 D6279-20 Referenced Document

• ASTM D1005 Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
• ASTM D16 Standard Terminology for Paint, Related Coatings, Materials, and Applications
• ASTM D3924 Standard Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
• ASTM D4449 Standard Test Method for Visual Evaluation of Gloss Differences Between Surfaces of Similar Appearance
• ASTM D523 Standard Test Method for Specular Gloss
• ASTM D6037 Standard Test Methods for Dry Abrasion Mar Resistance of High Gloss Coatings
• 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*， 2022-06-01 Update
• ASTM D823 Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels

ASTM D6279-20 history

• 2020 ASTM D6279-20 Standard Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings
• 2015 ASTM D6279-15 Standard Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings
• 2003 ASTM D6279-03(2013) Standard Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings
• 2003 ASTM D6279-03(2007) Standard Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings
• 2003 ASTM D6279-03 Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings
• 1999 ASTM D6279-99e1 Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings