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1、Designation:C303?10StardTestMethodfDimensionsDensityofPrefmedBlockBoard–TypeThermalInsulation1ThisstardisissuedunderthefixeddesignationC303thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthec
2、aseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.ThisstardhasbeenapprovedfusebyagenciesoftheU.S.DepartmentofDef
3、ense.1.Scope1.1ThistestmethodcoversdeterminationofthedimensionsdensityofblockboardinsulationasdefinedinTerminologyC168.1.2Thevaluesstatedininchpoundunitsaretoberegardedasstard.Thevaluesgiveninparenthesesaremathematicalco
4、nversionstoSIunitsthatareprovidedfinfmationonlyarenotconsideredstard.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyh
5、ealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2C167TestMethodsfThicknessDensityofBlanketBattThermalInsulationsC168TerminologyRelatingtoThermalInsulationC390Practi
6、cefSamplingAcceptanceofThermalInsulationLotsC870PracticefConditioningofThermalInsulatingMaterials3.Terminology3.1General—TerminologyC168shallbeconsideredasapplicabletothetermsusedinthistestmethod.4.SummaryofTestMethod4.1
7、Thematerialshallbetestedinthe“dry”conditioninthe“asmanufacturedreceived”condition(seeNote1)buttheproceduremustbeconsistentwiththatasgiveninthematerialspecification.Ifthematerialistobetestedinthe“dry”conditionitshallbedri
8、edtoconstantmass.Ifthematerialspecificationdoesnotgiveconditioninginstructionsaconditioningenvironmentof73F64F(23C62C)5065%relativehuityperPracticeC870shallbeused.Fromthemeasuredmassmeasureddimensionsthedensityoftheprodu
9、ctiscalculated.NOTE1—Somematerialsmaycontainvolatilessuchasmoisturewhenmanufacturedshippedboth.5.SignificanceUse5.1Dimensionalmeasurementsoftheproductthermalinsulationareessentialindeterminingcomplianceofaproductwithspec
10、ificationlimits.Dimensionalmeasurementsofvarioustestspecimensarealsorequiredbythespecifictestmethod.5.2Densitymeasurementsoftheproductinsulationareusefulindeterminingcomplianceofaproductwithspecificationlimitsinproviding
11、arelativegageofproductweights.Fanyonekindofinsulationsomeimptantphysicalmechanicalpropertiessuchasthermalconductivityheatcapacitystrengthetc.bearaspecificrelationshipwithitsdensity.Indertodesignfequipmentsupptscheckthema
12、terialfthe“asreceiveddensity”wherethemoisturecontentoftheproductasreceivedtheninstalledmayconsequential.6.Apparatus6.1Steelmeasure(rulertape)graduatedinmillimetresbettersuitablefmeasuringdimensionsto61.0%(seeNote2).6.2In
13、strumentsuchascaliperdialgagemicrometergraduatedinmillimetresbetterwithaminimumplatediameterof6mmamaximumplateof1.0by1.0in.(25by25mm).Thisinstrumentshallbesuitablefmeasuringthedimensionsto61.0%.Thisinstrumentshallnotcaus
14、edefmationoftheproductwhenmeasuringit.Thepressureexertedbythismeasuringplateshouldnotexceed0.040psi5psf(0.245kPa).1ThistestmethodisunderthejurisdictionofASTMCommitteeC16onThermalInsulationisthedirectresponsibilityofSubco
15、mmitteeC16.32onMechanicalProperties.CurrenteditionapprovedJune12010.PublishedJuly2010.iginallypublishedasapprovedin1952.Lastpreviouseditionapprovedin2007asC303–07.DOI:10.1520C030310.2FreferencedASTMstardsvisittheASTMwebs
16、itewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedS
17、tates1ASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrightstheris
18、kofinfringementofsuchrightsareentirelytheirownresponsibility.Thisstardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfiveyearsifnotrevisedeitherreapprovedwithdrawn.Yourcommentsareinvited
19、eitherfrevisionofthisstardfadditionalstardsshouldbeaddressedtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommitteewhichyoumayattend.Ifyoufeelthatyourcommen
20、tshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStardsattheaddressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959UnitedStates.Individua
21、lreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycontactingASTMattheaboveaddressat6108329585(phone)6108329555(fax)(email)throughtheASTMwebsite(www.astm.g).Permissionrightstophotocopythestardmayalsobesecuredfromth
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