ASTM_D_4060_-_19.pdf

Designation:D406019Standard Test Method forAbrasion Resistance of Organic Coatings by the TaberAbraser1This standard is issued under the fixed designation D4060;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the resis-tance of organic coatings to abrasion produced by the TaberAbraser on coatings applied to a plane,rigid surface,such as ametal panel.1.2 The values stated in SI units are to be regarded as thestandard,with the exception of mils when determining coatingthickness.1.3 This standard is similar in content(but not technicallyequivalent)to ISO 77842.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D16 Terminology for Paint,Related Coatings,Materials,andApplicationsD823 Practices for Producing Films of Uniform Thicknessof Paint,Coatings and Related Products on Test PanelsD968 Test Methods for Abrasion Resistance of OrganicCoatings by Falling AbrasiveD1005 Test Method for Measurement of Dry-Film Thick-ness of Organic Coatings Using MicrometersD1475 Test Method for Density of Liquid Coatings,Inks,and Related ProductsD3924 Specification for Standard Environment for Condi-tioning and Testing Paint,Varnish,Lacquer,and RelatedMaterials(Withdrawn 2016)3D7091 Practice for Nondestructive Measurement of DryFilm Thickness of Nonmagnetic Coatings Applied toFerrous Metals and Nonmagnetic,Nonconductive Coat-ings Applied to Non-Ferrous MetalsG195 Guide for Conducting Wear Tests Using a RotaryPlatform Abraser2.2 Other Standards:ISO 77842 Paints and varnishesDetermination of resis-tance to abrasionPart 2:Rotating abrasive rubber wheelmethod43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Abrasion resistance can be expressed as one or moreof the following terms:3.1.2 wear index,nthe average loss in weight in milli-grams per thousand cycles of abrasion.3.1.3 weight loss,nthe loss in weight in milligrams,determined at a specified number of cycles.3.1.4 wear cycles per mil,nthe number of cycles ofabrasion required to wear a film through to the substrate per mil(0.001 in.)of film thickness.3.2 For definitions of other terms used in this standard,referto Terminology D16.4.Summary of Test Method4.1 The organic coating is applied at uniform thickness to aplane,rigid panel and,after curing,the surface is abraded using1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.23 on Physical Properties of Applied Paint Films.Current edition approved Oct.1,2019.Published October 2019.Originallyapproved in 1981.Last previous edition approved in 2014 as D4060 14.DOI:10.1520/D4060-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 rotary rubbing action under controlled conditions of pressureand abrasive action.The test specimen,mounted on a turntableplatform,turns on a vertical axis,against the sliding rotation oftwo abrading wheels.The wheels shall be mounted in such away that when they are in contact with the rotating testspecimen,they rotate in opposing directions.One abradingwheel rubs the specimen outward toward the periphery and theother,inward toward