Designation:F699–00e1AnAmericanNationalStandardStandardPracticeforAcceleratedConditioningofPolybutylenePipeandTubingforSubsequentQualityControlTesting1ThisstandardisissuedunderthefixeddesignationF699;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—KeywordswereaddededitoriallyinNovember2003.1.Scope1.1ThispracticedescribesaprocedureforacceleratingthecrystallinephasetransformationofpolybutylenefromthemetastableFormIItothestableFormIbyapplicationofhydrostaticpressureinaclosedpressurevessel.1.2Thetechniquecanbeusedasanalternativetothe10-dayconditioningprocedurecalledforinSpecificationD2581.Theproductobtainedafterpressureagingwillbeinacrystallinestate,approximatelythatobtainedbyagingunderStandardLaboratoryConditions.1.3Thispracticeisnottobeusedforqualificationofanextrudedproductforpressureratingofpipeortubing.1.4Thevaluesgiveninparenthesesareprovidedforinfor-mationpurposesonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregivenin5.2and6.2.2.ReferencedDocuments2.1ASTMStandards:D2581SpecificationforPolybutylene(PB)PlasticsMold-ingandExtrusionMaterials23.SummaryofPractice3.1Acceleratedtransformationisachievedbysubjectingextrudedormoldedpolybutylenesamplesto207MPa(30000psi)for10mininawater-filledpressurevessel.4.SignificanceandUse4.1Afteracceleratedconditioning,physicaltestingmaybeperformedinaccordancewithapplicableASTMtestmethods.4.2Forqualitycontrolpurposes,tensile,quick-burst,ordimensionaltestsmayberunontheproductimmediatelyafterpressureaging.NOTE1—Becauseshrinkageoccursduringtheconditioningprocess,cutandmeasurespecimensafteragin...
