Designation:D714−02(Reapproved2009)StandardTestMethodforEvaluatingDegreeofBlisteringofPaints1ThisstandardisissuedunderthefixeddesignationD714;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodemploysphotographicreferencestan-dardstoevaluatethedegreeofblisteringthatmaydevelopwhenpaintsystemsaresubjectedtoconditionswhichwillcauseblistering.Whileprimarilyintendedforuseonmetalandothernonporoussurfaces,thistestmethodmaybeusedtoevaluateblistersonporoussurfaces,suchaswood,ifthesizeofblistersfallswithinthescopeofthesereferencestandards.Whenthereferencestandardsareusedasaspecificationofperformance,thepermissibledegreeofblisteringofthepaintsystemshallbeagreeduponbythepurchaserandtheseller.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMAdjuncts:ReferenceStandardsforBlisteringofPaintCoatings23.SignificanceandUse3.1Aphenomenonpeculiartopaintedsurfacesistheformationofblistersrelativetosomesystemweakness.Thistestmethodprovidesastandardprocedureofdescribingthesizeanddensityoftheblisterssothatcomparisonsofseveritycanbemade.4.ReferenceStandards4.1Thephotographicreferencestandardsareglossyprints.2Figs.1-4arereproductionsofthesestandardsandareincludedtoillustratetwocharacteristicsofblistering:sizeandfrequency.4.2Size—Referencestandardshavebeenselectedforfourstepsastosizeonanumericalscalefrom10to0,inwhichNo.10representsnoblistering.BlisteringstandardNo.8representsthesmallestsizeblistereasilyseenbytheunaidedeye.BlisteringstandardsNos.6,4,and2representprogressivelylargers...
