Designation:D6070−02(Reapproved2010)StandardTestMethodsforPhysicalPropertiesofSmooth-Wall,Coilable,Polyethylene(PE)Conduit(Duct)forPreassembledWireandCable1ThisstandardisissuedunderthefixeddesignationD6070;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresfordeterminingtheenvironmentalperformancepropertiesofsmooth-wall,coilable,medium-densityandhigh-densitypolyethylene(MDPEandHDPE)conduit(duct)forpreassembledwireandcable.1.2Whenevertwosetsofvaluesarepresented,indifferentunits,thevaluesinthefirstsetarethestandard,whilethoseinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2444TestMethodforDeterminationoftheImpactResis-tanceofThermoplasticPipeandFittingsbyMeansofaTup(FallingWeight)3.SignificanceandUse3.1Environmentalperformancetestvaluesforsmooth-wall,coilable,mediumdensityandhighdensitypolyethylene(MDPEandHDPE)conduit(duct)forpreassembledwireandcablemayprovidedataforresearchanddevelopment,engi-neeringdesign,qualitycontrol,andacceptanceorrejectionunderspecifications.4.Procedure4.1PerformanceTests—Removeelectricalwireorcables,orboth,fromtheductbeforeperformingthefollowingtests.4.2CompressionandRecovery—Flattenthreespecimensofduct6in.(150mm)long,thathavebeenconditionedat2362°C(7364°F)and5065%relativehumidityfornotlessthan48h,betweenparallelplatesatarateof0.5in./min(13mm/min)inasuitablepressuntilthedistancebetweentheparallelplateshasbeendecreasedby50%oftheoriginalinsidediameteroftheduct.Besurethespecimens,thetestapparatus,andthesurroundingairareinthermalequi...
