SINT粉末冶金材料

MATERIALSFORSINTEREDSTRUCTURALCOMPONENTSANDSELF-LUBRICATINGBEARINGS2TheGKNSinterMetalsListofMaterialsprovidesanoverviewofPMalloysthatarecommonlyusedforpowdermetalstructuralcomponentsandself-lubricatingbearingsincludingselectedmaterialproperties.OthercompositonscanbesuppliedbyGKNSinterMetalswhenagreedwithsalesandtechnology.Modificationsandsupplementstothelistmaterialswillbeintroducedwithoutreferenceornotification.Thisdoesnotrefertothedutyofinformationonthecurrentsupplyofparts.AdditionalinformationandrefencesaregiveninthebrochuresrelatedtospecialprocessesorproductsandintheGKNSinterMetalsGeneralBrochure.RemarksReferringtotheTablesThetablesaredividedintothemainsections“AdmissibleRange“and“InformativeValues“.Admissiblerangesofdensityandporosityaswellastherangeofchemicalcompositionaregivenintheleftsection.Alsoincludedareminimumhardnessvaluesthatareattainedevenatthelowestpossibledensityandwithunfavourablechemicalcomposi-tionswithintheadmissiblerange.Thesehardnessvaluescanbeverifiedonthefinishedcomponents.Thesectionontherightcontainsinformativevaluesofselectedmaterialpropertiesrepresentingagivenspecifieddensityvalueandacertainchemicalcompositionwithintherangespecifiedinthesectionontheleft.Thesepropertiesshouldnotberegardedasguaranteedpropertiesinalegalsense.Informativepropertyvalueshavebeendeterminedontestbars(ISO2740)intheas-sinteredstate;thereforetheycannotbeverifiedonthefinishedcomponent.Theuseofmicrotensiletestbarscutoutofasuppliedcomponentisnotallowednorcanthetensilestrenghtbedeductedfromahardnessmeasurement.Manymaterialpropertiesarepositivelyaffectedbysubsequentsizingorheattreatment.Itisstronglyrecommendedtoinquiretheconsequencesoftheseprocessesonmechanicalandphysicalpropertiesaswellasonpartdimensionsfromthesupplyingplant.DeterminationofPropertiesMechanicalandphysicalpropertiesstatedinthetableshavenbeendeterminedonthebasisofSintTestStandards(DIN30910Part1,Part3andPart4).FurtherdetailsaregiveninDIN30910Part1Section6.Thechemicalcompositionisdeterminedaccordingtotherespectivestandards.Wherethesearenotapplicable,suitabletestmethodsshouldbeagreed.316001400120010008006004002000GG35GG10NodularcastironGS70GGG50GTW35ÖgitheattreatedSistaRhölitheattreatedWerhoditSt70St3330CrMoV941Cr4Ck22GreycastironSteelcastingsNodularcastironMalleablecastironGKNSinterMetalssinteredsteelsCommonstructuralsteelsHeat-treatablesteelsUltimatetensilestrenght.MPaFigure1Bendingfatiguestrenght.MPa7006005004003002001000Figure2GreycastironÖgitSistaRhölitWerhoditCommonstructuralsteelsHeat-treatablesteelsComparisonofsinteredsteelsandconventionalsteelswithrespecttoultimatetensilestrenght(Figure1)andbendingfatiguestrenght(Figure2)ρCCuNiMoPFeHBρCCuNiAllvaluesgivenapplytotheas-sintered.notre-pressedcondition1)Inadditiontotheelementsmentioned.furtheralloyingelementsupto2%areadmitted.2)Sizingwillreducetheelongation.3)Bendingload.2.106cycles,notchfactorαK=1.0(ref.30912Part6).Ögit15C006.4–6.80.31–––bal.356.6–––Ögit20C106.4–6.80.31–5–––bal.406.6–1.5–Ögit25C016.4–6.80.3–0.61–––bal.706.60.5––Ögit26C306.4–6.80.31–51–50.8–bal.556.60.31.54.0Ögit29C356.4–6.80.31––0.3–0.6bal.706.6–––Ögit36C366.4–6.80.31–5––0.3–0.6bal.806.6–2.0–Ögit40C116.4–6.80.4–1.51–5–––bal.806.60.81.5–Ögit50C396.4–6.80.3–0.61–31–50.8–bal.906.60.51.54.0Sista25D006.8–7.20.31–––bal.456.9–––Sista30D106.8–7.20.31–5–––bal.506.9–1.5–Sista33D016.8–7.20.3–0.61–––bal.906.90.5––Sista34D356.8–7.20.31––0.3–0.6bal.806.9–––Sista40D366.8–7.20.31–5––0.3–0.6bal.906.9–2.0–Sista45–6.8–7.20.31–51–30.8–bal.606.90.31.51.8Sista50D116.8–7.20.4–1.51–5–––bal.956.90.61.5–Sista55D306.8–7.20.31–51–50.8–bal.606.90.31.54.0Sista60D396.8–7.20.3–0.61–31–50.8–bal.1206.90.51.54.0Sista80–6.9–7.20.2–0.851–73–bal.1807.10.61.54.0Sista100–6.8–7.30.3–0.851–73–bal.1807.20.61.54.0Rhölit25E007.20.31–––bal.607.4–––Rhölit30–7.20.31–––bal.707.40.3––Rhölit35E107.20.31–5–––bal.807.3–1.5–Rhölit60E307.20.31–51–50.8–bal.907.30.31.54.04PMMaterialsforStructuralComponentsSint-g/cm3%%%%%%g/cm3%%%SinteredsteelsEquiv.to30910DensityChemicalcomposition1)(masspercentage)Hard-nessDensityChemica(massStandardmaterials(shouldbepreferred)AdmissiblerangesMoPFeandereHBRMRp0.1A2)E.103σD.3)––bal.0.54013060410065––bal.0.555230160310090––bal.0.5802601803100750.5–bal.0.51053903102100100–0.45bal.0.5100310290510085–0.45bal.0.5100360290510090––bal.0.512546032021001000.5–bal.0.51505203702100115––bal.0.550130901013080––bal.0.5853002106130120––bal.0.51003203103130100–0.45bal.0.59033023012130110–0.45bal.0.510538032061301150.5–bal.0.51104502808130140––bal.0.515057040021301300.5–bal.0.513051037031301500.5–bal.0.518060041021301500.5–bal.0.524080043021401600.5–bal.0.530010004302150180––bal.0.56025014020160110––bal.0.58030018012160150––bal.0.5100350240101601600.5–bal.0.512060042051601705%%%%MPaMPa%MPaMPaHard-nessUTSYieldstrenghtElonga-tionYoung’smodulusBendingfatiguestrenghtalcomposition1)spercentage)Ögitisagroupofmaterialsusedfornormallyloadedparts.Theporositycanbeimpregnatedwithoilforreducedf