Technical Data Sheet LOCTITE 620 - R.S.Hughes

1 TechnicalDataSheet LOCTITE 620 May-2004 PRODUCTDESCRIPTIONLOCTITE 620provides thefollowingproductcharacteristics:Techn ologyAcrylicChemicalTypeMethacrylateEste rAppearance(uncured)GreenliquidLMSC omponentsOne component- requiresnomixingViscosityHighCureAnaerob icSecondaryCureActivatorApplicationRetai ningStrengthMediumto HighLOCTITE 620is designedforthebondingof cylindricalfittingparts. Theproductcureswhenconfinedintheabsenceo fairbetweenclosefittingmetalsurfacesandp reventslooseningandleakagefromshockandvi bration. Typicalapplicationsincludelocatingpinsin radiatorassemblies,sleevesintopumphousin gsandbearingsinautotransmissions. Particularlysuitableforapplicationswhere temperatureresistanceupto200 Cis @ 25 SeeMSDSV iscosity,Brookfield - RVT, 25 C,mPa s(cP):Spindle5, speed20rpm5,000 to12,000 LMSV iscosity, EN12092 -MV, 25 C,after180s, mPa s(cP).

2 Shearrate129s-11,200 to2, Thegraphbelowshowsthe shearstrengthdevelopedwithtimeonsteelpin sandcollarscomparedtodifferentmaterialsa ndtestedaccordingto of Full Strength on SteelCure Time10075502501min5min10min30min1h3h6h24 h72hSteelAluminumZinc of Full Strength on SteelCure Thegraphbelowshowsthe shearstrengthdevelopedwithtimeatdifferen ttemperaturesonsteelpinsandcollarsandtes tedaccordingto of Full Strength on SteelCure Time10075502501min5min10min30min1h3h6h24 h72h40 C22 C5 ,orlargegapsarepresent,applyingactivator tothesurfacewillimprovecurespeed. Thegraphbelowshowsshearstrengthdeveloped withtimeusingActivator 7471and7649onZincDichromatesteelpinsandc ollarsandtestedaccordingto of Full Strength on SteelCure Time10075502501min5min10min30min1h3h6h24 h72hActivator 7471 Activator 7649No ActivatorTDSLOCTITE 620, May-2004 TYPICALPROPERTIESOFCUREDMATERIALP hysicalProperties:Coefficientof ThermalExpansion, ASTMD 696, K-180 10-6 Coefficientof ThermalConductivity,ASTMC 177,W/(m K) ,kJ/(kg K) , at break, ASTMD 412, %<1 TYPICALPERFORMANCEOFCUREDMATERIALA dhesivePropertiesAfter 24 hours @22 CCompressiveShearStrength, ISO10123.

3 Steelpinsandcollars N/mm (psi) (2,495)Curedfor 24 hours @22 C, followedby24 hours@ 177 C,tested@22 CCompressiveShearStrength, ISO10123:Steelpinsandcollars N/mm (psi) (3,495)TYPICALENVIRONMENTAL RESISTANCEC uredfor 1 week @22 CCompressiveShearStrength, ISO10123:SteelpinsandcollarsHotStrengthT estedat temperature% RT StrengthTemperature, C1251007550250050100150200250 HeatAgingAgedat temperatureindicatedandtested @22 C% Initial Strength at RTHours200150100500010050010003000500012 0 C150 C180 CChemical/SolventResistanceAgedundercond itionsindicatedandtested @22 C.

4 %ofinitialstrengthEnvironment C100hr500hr1000hrMotorOil125100100100 UnleadedPetrol22959595 Brakefluid22100100100 WaterGlycol50/5087958080 Ethanol2210010075 Acetone22959595 GENERALINFORMATIONT hisproductisnotrecommendedforuseinpureox ygenand/oroxygenrichsystemsandshouldnotb eselectedasa ,consulttheMaterialSafetyDataSheet(MSDS) .Whereaqueouswashingsystemsareusedtoclea nthesurfacesbeforebonding,itisimportantt ocheckforcompatibilityofthewashingsoluti onwiththeadhesive. Insomecasestheseaqueouswashescanaffectth ecureandperformanceof notnormallyrecommendedforuseonplastics(p articularlythermoplasticmaterialswherest resscrackingoftheplasticcouldresult).

5 Usersarerecommendedtoconfirmcompatibilit yof ,cleanall surfaces(externalandinternal)witha Loctitecleaningsolvent andallowto thematerialis aninactivemetalorthecurespeedis toslow,spraywith Activator7471or7649 and allow , applyadhesivearoundtheleadingedgeofthepi nandthe insideofthecollarandusea , , theassemblyto approximately250 C. + + + 620, May-2004 LoctiteMaterialSpecificationLMSLMS datedAugust-20, 1997. Testreportsforeachbatchareavailableforth eindicatedproperties. LMStestreportsincludeselectedQCtestparam etersconsideredappropriatetospecificatio nsforcustomeruse. Additionally,comprehensivecontrolsareinp lacetoassureproductqualityandconsistency .

6 Drylocation. : 8 Cto21 C. Storagebelow8 Corgreaterthan28 Donotreturnproducttotheoriginalcontainer . additionalinformationis required, ( Cx )+ 32= FkV/mmx V/milmm/ inchesN x lbN/mmx lb/inN/mm x 145= psiMPax 145= psiN m x mm s= cPNoteThedatacontainedhereinarefurnished forinformationonlyandarebelievedtobereli able. Wecannotassumeresponsibilityfortheresult sobtainedbyothersoverwhosemethodswehaven ocontrol. It istheuser'sresponsibilitytodeterminesuit abilityfortheuser' ,HenkelCorporationspecificallydisclaimsa llwarrantiesexpressedorimplied,including warrantiesofmerchantabilityorfitnessfora particularpurpose,arisingfromsaleoruseof HenkelCorporation sproducts.

7 HenkelCorporationspecificallydisclaimsan yliabilityforconsequentialorincidentalda magesofanykind,includinglostprofits. Thediscussionhereinofvariousprocessesorc ompositionsisnottobeinterpretedasreprese ntationthattheyarefreefromdominationofpa tentsownedbyothersorasa licenseunderanyHenkelCorporationpatentst hatmaycoversuchprocessesorcompositions. Werecommendthateachprospectiveusertesthi sproposedapplicationbeforerepetitiveuse, usingthisdataasa guide. a trademarkof + + +