Designation:D1975−95(Reapproved2010)StandardTestMethodforEnvironmentalStressCrackResistanceofPlasticInjectionMoldedOpenHeadPails1ThisstandardisissuedunderthefixeddesignationD1975;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodprovidesproceduresforanindicationoftheenvironmentalstresscrackresistanceofplasticinjectionmoldedopenheadpails,covers,andcomponentsasasumma-tionoftheeffectsofcontainerdesign,resin,manufacturingconditions,fieldperformance,andotherfactors.1.2Thistestmethodmaybeusedtoevaluateacontainer’sresistancetomechanicalfailurebycrackingwheninthepresenceofchemicalandphysicalstresses.1.3Twoproceduresareprovidedasfollows:1.3.1ProcedureA,SpecifiedStress-CrackResistanceTestMethod—Thisprocedureisparticularlyusefulforqualitycontrolsincetheconditionsofthetestarespecified.1.3.2ProcedureB,UserSelectedStress-CrackResistanceTestMethod—Thisprocedureallowsindividualselectionoftestlevelsandisparticularlyusefulasadesignanddevelop-menttool.1.4Theseproceduresarenotdesignedtotesttheabilityofthecovergasketingmaterialorclosuretoretainthetestreagent.Lossorleakageofthereagentthroughtheseopeningsdoesnotconstitutecontainerfailure.However,thismayindicateaninternalpressurelossthatmightaffecttestresults.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificwarningstatementsaregivenin6.2,10.2.3,10.2.4,10.2.6,and10.2.8.2.ReferencedDocuments2.1ASTMStandards:2D996TerminologyofPacka...
