GMW 17408-2017 Flexible Expanded Rubber And Rubber-Like Materials原版完整文件

GMWORLDWIDEENGINEERINGSTANDARDS GMWI7408

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MaterialSpecification

GMW17408

WORLDWIDEENGINEERINGSTANDARDS

FlexibleExpandedRubberandRubber-Iike

MaterialsforAir,Dust,Noise,andWaterSealing

Scope

Thisstandarddescribestherequirementsofflexibleexpandedrubberandrubber-likematerialstobeusedasairanddustsealsorwatersealsandgaskets.Thesematerialsmayalsobeusedasisolators,rattleprotection,coversforgapsandothersuitableapplications.Thesematerialsaretypicallydiecutorslittowidthfromsheetstock,andmayhavepressuresensitiveadhesiveappliedtoone(1)side.

MaterialDescription.Materialsmeetingtherequirementsofthisspecificationwillbecomprisedoffour(4)classesandseveraltypes.

ClassI:Expandedrubberandrubber-likematerialstobeusedforair,dustandrattleisolators.Materialsinthisclasscanbeopencell,semi-opencell,semi-closedcell,orclosedcellmaterials.

ClassII:Expandedrubberandrubber-likematerialstobeusedforwatersealingatlowcompression(30%),andmustmeetthewatersealabilityrequirementsofthisdocumentMaterialsinthisclassareclosedcellmaterials.

ClassIIIAthroughE:Expandedrubberandrubber-likematerialstobeusedforwatersealing,butatgreatercompressionthanClassIlmaterials,andmustmeetthewatersealabilityrequirementsofthisdocument.Materialsinthisclasscanbeopencell,semi-opencell,semi-closedcell1orclosedcellmaterials.

ClassIIIA:Meetswatersealabilityat40%compression.

ClassIIIB:Meetswatersealabilityat50%compression.

ClassIIIC:Meetswatersealabilityat60%compression.

Class川D:Meetswatersealabilityat70%compression.

ClassHIE:Meetswatersealabilityat80%compression.

ClassIV:Expandedrubberandrubber-likematerialstobeusedforlightingapplications,andmustmeetthelightingrequirementsofthisdocument.MaterialsapprovedtoClassIVmustbesulfur-free.Materialsinthisclassshallbeclosedcellmaterials.Thesematerialsshallmeetwatersealabilityat40%compression.

PerTable1below,Classspecificapprovedmaterialscanbeusedinapplicationswheretherearelesserwatersealabilityrequirements.Forexample,anapplicationrequireswatersealabilityat50%compression(ClassIIIB);materialsapprovedtoClassIlandClassIIIAarepermittedtobeusedinthisapplication.

Table1:RequiredandAllowableMaterials

ClassRequiredByApplication

WaterSealabilityRequirement

ClassesPermissibleforUse

ClassI

ClassI,ClassII,ClassIIIA-E

ClassIl

30%

ClassIlonly

Class川A

40%

ClassII1ClassIIIA

ClassIIIB

50%

ClassII,ClassIIIA-B

Class川C

60%

ClassII,ClassIIIA-C

ClassIIID

70%

ClassIl1ClassIIIA-D

Class川E

80%

ClassIlfClassIIIA-E

ClassIV

40%

ClassIVonly(exclusivetolightingapplications)

AllmaterialsapprovedtothisspecificationshallbelistedinintheGMMaterialsApprovedSourceList.Afteramaterialhasbeengrantedapproval,therequiredtestingforannualmaterialcertificationshallbeallpropertieslistedinTable3.

Materialsaredividedintoseveraltypes,dependingonthestiffness(compressiondeflection).

Materialscoveredinthisspecificationareresistantto+70℃continuousand+100℃excursion.Dependingonthebasematerialofthespongerubber,highertemperatureresistance(upto+100℃permanent)canbeobtained.Temperatureresistanceshallbeverifiedoneachfoammaterial,shallbepartofthedatasubmittedforapproval,andmustbespecifiedonthedrawingormathdatafile.

Note:Thisspecificationdoesnotcoversiliconefoams,polyurethanefoams,orpolyolefinfoams.ThesefamiliesoffoamshaveindividualGMWspecifications.ContactGMMaterialsEngineeringfortheappropriatefoamspecificationforthesematerials.

MaterialTypeshallbeidentifiedaccordingtotherangeofcompressiondeflection.SeeTable2.

Table2:MaterialTypesandRelatedCompressionDeflection

MaterialType

CompressionDeflection

TypeI

<5.00kPa

TypeIl

5,00kPato21.00kPa

TypeIII

21.01kPato48.00kPa

TypeIV

48.01kPato97.00kPa

TypeV

97.01kPato172.00kPa

TypeVl

172.01kPato276.00kPa

TypeVll

>276.00kPa

Note:Compressiondeflectionclassificationsshallbebasedontheaveragenominal∞mpressiondeflectionvalue±10%.

Certainapplicationsmayrequiretheuseofanadhesive.Ifanadhesive(ADH)isrequired,anADHsuffixshallbeaddedafterthebasicspecificationandtypenumber(e.g.1GMW17408ClassIlTypeIl-ADH).Ifanadhesiveisspecified,theadhesivebackedmaterialshallmeettherequirementsofGMW16443.SeeTable7.

Otherinteriorpartsmayrequirealowfrictioncoating(CO)toreducefrictionbetweenthesealandthesubstrate.Whenthiscoatingisrequired,aCOsuffixshallbeaddedafterthespecification,class,andtypenumbers(e.g.1GMW17408ClassIlTypeIl-CO).SeeTable8.

Symbols.Notapplicable.

Applicability.Typicalapplicationsinclude:airanddustseals,watersealsandgaskets,isolatorsandrattleprotection,coversforgaps,andothersuitableapplications.

Remarks.Toproperlyusethisspecification,theinformationin1.4.1through1.4.4mustbeaddedtotheengineeringdrawingormathdatafile.

Specifypolymerbasematerial,e.g.,AcrylonitrileButadieneCopolymer(NBR),EthylenePropyleneDieneTerpolymer(EPDM),PolyvinylChloride(PVC),PolychIoropreneZStyreneButadieneBlend(CR∕SBR),etc.

IndicatetheADHorCOsuffixifanadhesiveorlowfrictioncoatingshallbeused.

Identifyapplicationsuchasinterior,exterior,underhood,orexteriorlighting.Specifictestsarerequiredforeachuse(seeTable4,Table5,andTable6).

Specifysurfaceappearanceanddimensionsusingcurrentrequirementsasagreeduponbetweenengineeringandthesupplier.

References

Note:Onlythelatestapprovedstandardsareapplicableunlessotherwisespecified.

ExternalStandards/Specifications.

FMVSS302

ISO1431-1

ISO3386-1

ISO23529

ISO188

ISO1798

ISO3865

SAEJ1389

ISO845

ISO2781

ISO6916-1

2.2GMStandards/Specifications.

GMW3059

GMW3235

GMW14650

GMW16853

GMW3205

GMW3286

GMW14685

GMW17650

GMW3208

GMW14162

GMW14829

GMW3221

GMW14270

GMW15634

GMW3232

GMW14444

GMW16443

AdditionalReferences.

B0400029

Requirements

RequirementsonTestSpecimens.Unlessotherwisespecified,theshape,size,andnumberoftestpiecesshallbeinaccordancewiththerelevanttestprocedures.Specimenconditioningshallbeasspecifiedintherelevanttestmethods.Theminimumtimebetweenmanufacturingandtestingshallbe72h.

Unlessotherwisestated,ambienttemperaturetestconditionsshallbeheldto÷23℃±5℃;allothertemperaturesshallbeheldto±3℃.Unlessotherwisestated,mechanicalpropertiesindeliverystateandafterheatorfluidimmersion,aretobetestedat+23℃±5℃andwiththesametestprocedures.

EmissionsTestingofInteriorMaterialsandParts.ForallCodeEdesignatedpartsperGMW14444,referenceGMW16853foremissionstestingofinteriormaterialsandparts.

AllmaterialssuppliedtothisstandardmustcomplywithGMW3059,RestrictedandReportableSubstancesincludingtherequirementtosubmitafullmaterialcompositiondisclosuretoGMviatheInternationalMaterialDataSystem(IMDS)orviaacompletedGMW3059reportform.

ShelfLife.Thematerialshallbepackedtopreventpermanentdeformationwhenshippedorstored.Itmustmeetallrequirementsofthisspecificationaftersix(6)monthsstorageat+50℃.

MaterialandPerformanceRequirements.MaterialrequirementsaresummarizedinTable3throughTable6.Allmaterialsarerequiredtotestaminimumofsix(6)lotstoTable3requirements,withtheexceptionofWaterImpermeability(1lotonly).Table4throughTable6requireone(1)lotoftestdataonly.

TestResults.Withreferencetothisstandard,thetestresultsshallbepresentedinatestreport.

Table3:MaterialPropertiesforAllApplications(6lots)

Property

TestMethod

Unit

Value

Density

AllClassesandTypes

ISO2781or

ISO845

g∕cm3kg∕m3

ToBeReported

CompressionDeflection

AllClasses,TypeI

ISO3386-1

Valuesshallbedeterminedafterone(1)minuteofasingle50%compressiononunpliedmaterial(nopre∩ex)afterbeingcompressedatarateOf50mm/minute

Samplesshallbe50mmX50mmwithaminimumsamplethicknessof3.2mm.Alladhesivesurfacesshallbedustedwithtalctopreventadhesiontothe∞mpressionplates.

Additionally,∞mpressiondeflectionCUrVeSfrom0%to90%compressionshallbesubmittedforeachproductpriortoapproval.

kPa

<5.00

AllClasses.TypeIl

kPa

5.00to21.00

AllClasses,TypeIII

kPa

21.01to48.00

AllClasses,TypeIV

kPa

48.01to97.00

AllClasses,TypeV

kPa

97.01to172.00

AllClasses,TypeVl

IkPa

172.01to276.00

AllClasses,TypeVll

kPa

>276.00

Compressibility(valuetobemeasuredonfinishedpartonly)No,e1

AllTypesandClasses

GMW14685-1C3

N∕cm2

ReportValue

WaterAbsorption

AllClasses.TypeII,TypeIIIandTypeIV

ISO6916-1,AnnexE

Samplesshallbe50mmX50mm×12.5mm.orthethickestmaterialproduced

Reportthicknessdeviatingfrom12.5mm

%bymass

10Maximum

AllClasses,TypeV,TypeVlandTypeVll

%bymass

5Maximurn

TensileStrength

AllClasses,TypeI

ISO1798,Type1Die

kPa

50Minimum

AllClasses,TypeIland

TypeIII

kPa

172Minimum

AllClasses,TypeIV

kPa

275Minimum

AllClasses.TypeV,TypeVlandTypeVll

kPa

379Minimum

Elongation

AllClassesandTypes

ISO1798,Type1Die

%

100Minimum

AgeResistanceMDlP?

AllClassesandTypes

ISO188MethodB.168h+0h/2hat+70℃±3℃Changeofcompressiondeflection

%

+30Maximum

ColdResistance

AllClassesandTypes

ConditionperISO23529,-30℃±3℃;4h+0h∕-0.5h.thenbendincoldcondition180degreesaroundmandrelwithradiusoftwo(2)timesthesamplethicknessVisualExamination

Nocracks

GMWORLDWIDEENGINEERINGSTANDARDS GMW17408

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Property

TestMethod

Unit

Value

WaterImpermeability(1lotonly)

ClassIlMaterialsOnly

TestperGMW17650Compress30%As-received∞r>dition

Thematerialmustprovideacompletewatersealforaminimumof1h

ClassIlMaterialsOnly

TestperGMW17650

Compress30%

AgedCondition;seeTableA1,AppendixAforthermalcycle

Thematerialmustprovideacompletewatersealforaminimumof1h

ClassIIIandClassIVMaterialsOnly

TestperGMW17650

CompresstorequiredpercentasdefinedinSection1.1

As-received∞r>dition

Th©materialmustprovideacompletewatersealforaminimumof1h

ClassIIIMaterialsOnly

TestperGMW17650

Compresstorequired%asdefinedinSection1.1

AgedCondition;seeTableA1,AppendixAforthermalcycle

Thematerialmustprovideacompletewatersealforaminimumof1h

ClassIVMaterialsOnly

TestperGMW17650

Compresstorequired%asdefinedinSection1.1

Agedcondition,seeTableA2,AppendixAforthermalcycle

Th©materialmustprovideacompletewatersealforaminimumof1h

CompressionSet

OpenCellMaterials(ClassI)

TestperISO6916-1AnnexD

÷70°C±1℃,24h+0h∕-2h,50%compressedRe∞veryafter30minutes

%

50Maximum,actualvaluetobereported

Semi-closedandClosedCellMaterials

(ClassIl-III)

TestperISO691B-1AnnexD

♦23βC±2℃,24h+0h∕-2ht50%compressedRecoveryal1hand24h

%

Report1alh25Maximumat24h

Semi-closedandClosedCellMaterials

(ClassIl-Ill)

Testper∣SO6916∙1AnnexD

+70℃±1℃,24h+0h∕∙2h,50%compressed

Re∞vβryat1hand24h

%

ToBeReported

ClassIVMaterials

Testper∣SO6916-1AnnexD

+80°C±1℃,37days,50%compressed

Re∞vβry10minutes

Recovery48h

%%

ToBeReported87Maximum

Note1:Testtoberunonfinishedproductonly,testonfinishedpartisnotrequiredformaterialapproval.

Note2:Testtoberunonasmanufacturedmaterialandfinishedproduct,testonfinishedpartisnotrequiredformaterialapproval.

Table4:MaterialProperties-RequirementsforExteriorApplicationsandExteriorLightingApplications(1lot)

Property

TestMethod

Unit

Value

OzoneResistance

ExteriorApplications

ISO1431-1;100pphm±10pphmfor72h÷0R∙2hat+40P±2。C

Removesamplesfromchamberandwraparounda25mmdiametermandrel

Nocrackingorotherindicationofmaterialbreakdown

Property

TestMethod

Unit

Value

PaintStaining

ExteriorApplications

ISO3865.MethodA,24h+0h∕-2hat+βθ℃±3℃,usingproductionrepresentativepaintedpanels.Basecoatshallt>ewhite.Todeveloplatentstain,thepanelsshallbeexposedtoultraviolet(UV)followingtheheatexposure.Either:UVexposure4h±0.5hat13W∕m2±2W∕m2Of：GMW14162-,B∕4MJ∕m2minimum

Forpartswithpermanentcontacttothebody

Forpartswhencontactareaisvisible

Nomigrationstainpermissible:Contactstainpermissible

Nostainingpermissible

CompatibilitywithSolvents

ExteriorApplications

Materialsshouldbetestedwithoutanyadhesive,immersematerialfor10minutesinB0400029orVarnishMakersandPainters(VM&P)Napħtha

VisualExaminationattimeofremovalfromsolvent

VisualExaminationafter24hatroomtemperature

N。surfacedeterioration

N。degradationofmaterial

CycleTest

ExteriorApplications

Afterthree(3)cyclesoftheexteriorcycle,thefollowingrequirementsapply:

CycleConditions,seeAppendixA1TableA3

LinearShrinkage

SamplestestedperSAEJ1389

tomatingpanelrepresentingcurrentproductionfinishesintheintendedapplication;defaultpanelforfoamqualificationshallbee-coatεκisteel

Sampleswithpressuresensitiveadhesive(PSA):

RetentionofvaluestoappropriateGMadhesivespecification

%

%

Actualvaluetobereported,nottoexceed5maximumforapproval

noCorrosion

60Minimum

Weather-OmeterResistance

ExteriorApplicationsexposedtodirectsunlightonly

GMW14650Class4;

1240kJ∕m2exposureat340∩m

Pullspecimensat221kJ∕m2442kJ∕mz.663kJ∕mzand1240kJ/m?

VisualInspectionat10×magnification

Nosurfacecracks

Reporthighestlevelofexposurewithnocrackingat10xmagnification

Table5:MaterialProperties-RequirementsforInteriorApplications(1lot)No|e1Nol«

Property

TestMethod

Unit

Value

CycleTest

InteriorApplications

Afterthree(3)cyclesoftheinteriorcycle,thefollowingrequirementsapply:

CycleConditions,seeAppendixA,TableA4

LinearShrinkage

SamplestestedperSAEJ1389

tomatingpanelrepresentingcurrentproductionfinishesintheintendedapplication

Sampleswithpressuresensitiveadhesive(PSA)RetentionOfvaluestoappropriateGMadhesivespecification

%

Actualvaluetobereported,nottoexceed5maximumforapproval

NoCorrosion

60Minimum

Property

TestMethod

Unit

Value

Odor

InteriorApplications

GMW3205

InitialApproval:DryCondition-CodingB4FinishedPart:Calculatesamplesizeperformulain

GMW3205,DryCondition-CodingB

Rating6Minimum

VolatilityofOrganicConstituents(Fogging)

InteriorApplications

GMW3235,MethodB,T1∕Y1∕P1samplethickness3.0mm±0.5mm

mg

2.0Maximum

Flammability

InteriorApplications

MustcomplywithFMVSS302.TesttoGMW3232

BurnRate

StatisticalBumRate

mm/minutemm/minute

100MaX而Um

100Maximum

InteriorEmissions

InteriorApplications

GMW15634

VolatileOrganicCompound(VOC)SemiVolatileOrganicCompound(SVOC)

ToBeReportedToBeReported

Note1;Fordefin计ionOfinteriorparts,seeGMW14444CodeEparts.

Note2:Table5materialpropertiesarerequiredIorexteriorlightingapplicationsexposedtotheinteriorand/orthetrunkspace.

Table6:MaterialProperties-RequirementsforUnderhoodApplications(1lot)

Property

TestMethod

Unit

Value

CycleTest

U∩derħoodApplications

Afterone(1)cycleoftheUnderhoodcycle,thefollowingrequirementsapply:

CycleConditions,seeAppendixA,TableA5

LinearShrinkage

SamplestestedperSAEJ1389

tomatingpanelrepresentingcurrentproductionfinishesintheintendedapplication

SampleswithPSA

RetentiQnofvaluestoappropriateGMadhesivespecification

%

Actualvaluetobereported,nottoexceed5maximumforapproval

Nocorrosion

60Minimum

Flammability

UnderhOOdApplications

MustcomplywithFMVSS302.TesttoGMW3232

BurnRate

StatisticalBumRate

mm/minutemm/minute

100Maximum

100Maximum

OdorNote

UnderhoodApplications(HVAC)

GMW3205

InitialApproval:DryCondition-CodingB4

FinishedPart：Calculatesamplesizeperformulain

GMW3205,DryCondition-CodingB

Rating6Minimum

VolatilityofOrganicConstituents(Fogging)No,e

UnderhoodApplications(HVAC)

GMW3235,MethodB,T1∕Y1∕P1samplethickness3.0mm±0.5mm

mg

2.0Maximum

Note:Onlyrequired计airpassingthematerialwillenterthepassengercompartment.

Table7:AdhesionRequirement(ADHSuffix)

Property

TestMethod

Unit

Value

AdhesionRequirement

AllpartswithADHsuffix

TestperRequirementsofGMW16443perapplicationrequirements.

-

-

Table8:LowFrictionCoating(COSuffix)

Property

TestMethod

Unit

Value

CoatingAdhesion

AllpartswithCOsuflix

GMW14829tapeadhesionCoatingRetention

%

99Minimum

CoatingCureTest

AllpartswithCOsuflix

Sampleshallbedoubled180obackuponitself.ThecoatingsurfacesshallfaceeachotherandthesampleshallbecompressedinclampstoaminimumOf75%Oftħeoriginalcombinedthickness

Samplesareexposedfor24hat+93℃±2℃Samplesshallbeallowedtoreturntoroomtemperaturepriortothereleaseoftheclamps

Notearingofthecellularmaterial,noseparationofthecoatingfromthematerial,nolossof∞atinglusterorgloss

CoatingWearTest

AllpartswithCOSUHiX

GMW3208

1000cyclesusing0.5kgloadandCS-10wħeels

Noevidenceofcoatingbreakthrough

ManufacturingProcess

Notapplicable.

RulesandRegulations

LegalRegulations.Allmaterialsmustsatisfyapplicablelaws,rules,regulationsandrecommendationsvalidinthecountryofusage.

Language.IntheeventofconflictbetweentheEnglishanddomesticlanguage,theEnglishlanguageshalltakeprecedence.

InspectionandRejection.SamplesofcomponentsormaterialsreleasedtoaGMmaterialspecificationshallbetestedforconformitywiththerequirementsofthismaterialspecificationandapprovedbytheresponsibleEngineeringdepartmentpriortocommencementofdeliveryofbulksupplies.

Anewapprovalmustbereceivedforanychanges,e.g.,properties,manufacturingprocess,locationofmanufacture,etc.Ifnototherwiseagreed,alltestinganddocumentationnormallyrequiredforinitialreleasemustbecompleted.

Itistheresponsibilityofthesuppliertoinformthecustomerinatimelymanner,withoutsolicitation,andtoincludedocumentationofallmodificationsofmaterialsand/orprocessesandtoapplyforanewrelease.

MaterialSafetyDataSheetsZSafetyDataSheets(MSDS/SDS).Fornewproductsubmissions,orwhenachangeinchemicalcompositionofanexistingproducthasoccurred,acompletecopyoftheMaterialSafetyDataSheetZSafetyDataSheetmustbesubmittedincompliancewiththeGloballyHarmonizedSystemofClassificationandLabelingofChemicals(GHS)requirementsorothercountry-specificMSDS/SDSrequirements.

GMWORLDWIDEENGINEERINGSTANDARDS GMW17408

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ApprovedSources

MaterialssuppliedtothisspecificationmustbeapprovedbyGeneralMotors.

AlistofapprovedmaterialscanbefoundintheGMMaterialsApprovedSourceList.ThisGMMaterialFileisprovidedtothirdpartiestoreduceredundanttestingofmaterials.Ifapprovedmaterialalreadylistedisused,thepartsuppliercanuseGMMaterialFilereferenceforProductionPartApprovalProcess(PPAP)materialapproval.Ifthedecisionismadetouseanotyetapprovedmaterial,contacttheMaterials一FoamGlobalSubsystemLeadershipTeam(GSSLT)fordetailsontheapprovalprocess.ThematerialapprovalprocessmustbecompletedpriortoPPAPstartdateofthepartsuppliedtoGeneralMotors.

Engineeringqualificationsofanapprovedsourcearerequiredforthisstandard.OnlysourceslistedintheGMMaterialsFile(i.e.,GMSuppIyPower)underthisstandardnumberhavebeenqualifiedbyengineeringasmeetingtherequirementsofthisstandard.Toaccessthislist,referenceGMW14270forlatestlocation.

ForotherGMlocations,theresponsibleengineeringgroupshouldbecontactedtoobtaintheapprovedsourceinthatindividualcountry.

Notes

Glossary.Not叩PliCabIe.

Acronyms,Abbreviations,andSymbols.

ADH Adhesive

CO Coating

CR Polychloroprene

EPDM EthylenePropyleneDieneTerpolymer

GHS GloballyHarmonizedSystemofClassificationandLabelingofChemicals

GSSLT GlobalSubsystemLeadershipTeam

HVAC Heating,Ventilation,AirConditioning

IMDS InternationalMaterialDataSystem

ISO InternationalOrganizationforStandardization

MSDS MaterialSafetyDataSheet

NBR AcrylonitrileButadieneCopolymer

PPAP ProductionPartApprovalProcess