ASTM D968-15 Standard Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive英文版

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1、Designation:D968−15StandardTestMethodsforAbrasionResistanceofOrganicCoatingsbyFalling1AbrasiveThisstandardisissuedunderthefixeddesignationD968;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anu

2、mberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.ScopeD7091PracticeforNondestructiveMeasurementofDryFilmThickne

3、ssofNonmagneticCoatingsAppliedto1.1ThesetestmethodscoverthedeterminationoftheFerrousMetalsandNonmagnetic,NonconductiveCoat-resistanceoforganiccoatingstoabrasionproducedbyabrasiveingsAppliedtoNon-FerrousMetalsfallingontocoatingsappliedtoaplanerigidsurface,suchasaE11Sp

4、ecificationforWovenWireTestSieveClothandTestmetalorglasspanel.Sieves1.2Twotestmethodsbasedondifferentabrasivesare2.2OtherStandards:coveredasfollows:ANSIB74.12SpecificationsfortheSizeofAbrasiveGrainSections—GrindingWheels,PolishingandGeneralIndustrialMethodA—FallingSand

5、AbrasionTest6–133MethodB—FallingSiliconCarbideAbrasionTest14–21UsesFEPAStandard42-2:2006GrainsofFusedAluminum1.3ThesemethodsshouldberestrictedtotestinginonlyOxide,SiliconCarbideandotherAbrasiveMaterialsforonelaboratorywhennumericalvaluesareusedbecauseoftheBondedAbras

6、ivesandforGeneralApplications—Mi-poorreproducibilityofthemethods(see13.1.2and21.1.2).4crogritsF230toF2000Interlaboratoryagreementisimprovedsignificantlywhenrank-ingisusedinplaceofnumericalvalues.3.Terminology1.4ThevaluesstatedinSIunitsaretoberegardedasthe3.1Definitions

7、ofTermsSpecifictoThisStandard:standard.Thevaluesgiveninparenthesesareforinformation3.1.1abrasionresistance,n—theamountofabrasivere-only.quiredtowearthroughaunitfilmthicknessofthecoating.1.5Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.

8、Itistheresponsibility4.SummaryofTestMethodoftheuserofthisstandardtoestablishappropriatesafetyand4.1Abrasiveisallowedtofallfromaspec