1、BRITISH STANDARD BS EN 10085:2001 Nitriding steel Technical delivery conditions The European Standard EN 10085:2001 has the status of a British Standard ICS 77.140.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 10085:2001 This British Standard, having been prepared un
2、der the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 34305 7 National foreword This British Standard is the official English language version of EN 10085:2001. It supersedes tab
3、le 6 of BS 970-1:1996. BS 970-1:1996 is currently under revision. The UK participation in its preparation was entrusted to Technical Committee ISE/31, Wrought steels, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. C
4、ross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electr
5、onic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understa
6、nd the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover,
7、an inside front cover, the EN title page, pages 2 to 27 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10085 March2001 ICS77.14
8、0.10 Englishversion NitridingsteelsTechnicaldeliveryconditions AcierspournitrurationConditionstechniquesdelivraison NitriersthleTechnischeLieferbedingungen ThisEuropeanStandardwasapprovedbyCENon19January2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsf
9、orgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioni
10、nanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembo
11、urg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMe
12、mbers. Ref.No.EN10085:2001EPage2 EN10085:2001 Contents Foreword 3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions 5 4 Classificationanddesignation 6 4.1 Classification 6 4.2 Designation 6 5 Informationtobesuppliedbythepurchaser 6 5.1 Mandatoryinformation 6 5.2 Options 7 6 Manufacturingproces
13、s 8 6.1 General 8 6.2 Heattreatmentandsurfaceconditionatdelivery 8 6.3 Castseparation 8 7 Requirements 8 7.1 Chemicalcomposition,hardnessandmechanicalproperties 8 7.2 Shearability 8 7.3 Structure 8 7.4 Internalsoundness 9 7.5 Surfacequalityanddecarburization 9 7.6 Dimensions,tolerancesondimensionsan
14、dshape 9 8 Inspectionandtesting 9 8.1 Typesandcontentsofinspectiondocuments 9 8.2 Specificinspectionandtesting 10 9 Marking 11 AnnexA(normative):Rulingsectionsforthemechanicalproperties 22 AnnexB(normative):Supplementaryorspecialrequirements 24 AnnexC(informative):Heattreatment 25 AnnexD(informative
15、):Dimensionalstandardsapplicabletoproductscomplying 26 withthisEuropeanStandard Bibliography 27Page3 EN10085:2001 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeECISS/TC23“Steelsforheat treatment,alloysteelsandfreecuttingsteelsQualitiesanddimensions”,thesecretariatofwhichis heldbyDI
16、N. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbySeptember2001,andconflictingnationalstandards shallbewithdrawnatthelatestbySeptember2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof
17、the followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.Page4 EN10085:2001 1Scope 1.1ThisEuropeanStandardspecifiesthete
18、chnicaldeliveryrequirementsfor semifinishedproducts,e.g.blooms,billets,slabs(seeNOTE3); bars(seeNOTE3); rod; wideflats; hotorcoldrolledstripandsheet/plate; forgings(seeNOTE3) manufacturedfromthenitridingsteelslistedinTable3andsuppliedinoneoftheheattreatment conditionsgivenforthedifferenttypesofprodu
19、ctsinTable1,line2to4andinoneofthesurface conditionsgiveninTable2. Thesteelsare,ingeneral,intendedforthefabricationofquenchedandtemperedandgenerally machinedandsubsequentlynitridedparts. NOTE1SomegradesfromEN100831arealsousedfornitridingtreatment. NOTE2RelatedEuropeanStandardsaregiveninBibliography.
20、NOTE3Hammerforgedsemifinishedproducts(blooms,billets,slabsetc.)andhammerforgedbarsarein thefollowingcoveredundersemifinishedproductsorbarsandnotundertheterm“forgings”. 1.2Inspecialcases,variationsinthesetechnicaldeliveryrequirementsoradditionstothemmay formthesubjectofanagreementatthetimeofenquiryan
21、dorder(seeannexB). 1.3InadditiontothespecificationsofthisEuropeanStandard,thegeneraltechnicaldelivery requirementsofEN10021areapplicable. 2Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriatepl
22、acesinthetextandthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofany ofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitbyamendmentor revision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(including amendments). EN100
23、021, MetallicmaterialsTensiletestingPart1:Testmethod(atambienttemperature) “includingAddendumAC1:1990“ EN10020, DefinitionandclassificationofgradesofsteelPage5 EN10085:2001 Itmaybeagreedatthetimeofordering,untiltheseEURONORMShavebeen 1) adoptedasEuropeanStandards,thattheseEURONORMSorthecorresponding
24、 nationalstandardsshouldbeapplied. EN10021, Generaltechnicaldeliveryrequirementsforsteelandironproducts EN100271, DesignationsystemsforsteelPart1:Steelnames,principalsymbols EN100272, DesignationsystemsforsteelPart2:Numericalsystem EN100451, MetallicmaterialsCharpyimpacttestPart1:Testmethod EN10052,
25、 Vocabularyofheattreatmenttermsforferrousproducts EN10079, Definitionofsteelproducts EN101632, Deliveryrequirementsforsurfaceconditionofhotrolledsteelplates,wideflatsand sectionsPart2:Platesandwideflats EN10204, MetallicproductsTypesofinspectiondocuments(includesamendmentA1:1995) EN10221, Surfacequa
26、lityclassesforhotrolledbarsandrodsTechnicaldeliveryconditions CR10260, DesignationsystemsforsteelsAdditionalsymbols CR10261, ECISSIC11IronandsteelReviewofavailablemethodsofchemicalanalysis ENISO377, SteelandsteelproductsLocationandpreparationofsamplesandtestpiecesfor mechanicaltesting ENISO65061, Me
27、tallicmaterialsBrinellhardnesstestPart1:Testmethod(ISO65061:1999) EURONORM103 , Microscopicdeterminationoftheferriticorausteniticgrainsizeofsteels 1) EURONORM104 , Determinationofthedepthofdecarburizationofnonalloyandlowalloy 1) structuralsteels ISO14284, SteelandironSamplingandpreparationofsamplesf
28、orthedeterminationofchemical composition 3Termsanddefinitions ForthepurposeofthisEuropeanStandard,thefollowingtermsanddefinitionsapplyinadditionto thetermsanddefinitionsgiveninEN10020,EN10052,EN10079,ENISO377andISO14284.Page6 EN10085:2001 3.1 rulingsection thatsectionforwhichthespecifiedmechanicalpr
29、opertiesapply Independentoftheactualshapeanddimensionsofthecrosssectionoftheproductthesizeofits rulingsectionisalwaysgivenbyadiameter.Thiscorrespondstothediameterofan“equivalent roundbar”.Thatis,aroundbarwhich,atthepositionofitscrosssectionspecifiedfortakingthe testpiecesforthemechanicaltests,will,w
30、henbeingcooledfromaustenitizingtemperature,show thesamecoolingrateastheactualrulingsectionoftheproductconcernedatitspositionfortaking thetestpieces. 3.2 nitridingsteels heattreatablesteelscontainingcontrolledamountsoftwoormoreofthenitrideformingelements aluminium,chromium,molybdenum,vanadium,makingt
31、hemparticularlysuitablefornitriding 4Classificationanddesignation 4.1Classification AllsteelscoveredbythisEuropeanStandardareclassifiedasalloyspecialsteelsaccordingto EN10020. 4.2Designation 4.2.1Steelnames ForthesteelgradescoveredbythisEuropeanStandard,thesteelnamesasgivenintherelevant tablesareall
32、ocatedinaccordancewithEN100271andCR10260. 4.2.2Steelnumbers ForthesteelgradescoveredbythisEuropeanStandard,thesteelnumbersasgivenintherelevant tablesareallocatedinaccordancewithEN100272. 5Informationtobesuppliedbythepurchaser 5.1Mandatoryinformation Thefollowinginformationshallbesuppliedbythepurchas
33、eratthetimeofenquiryandorder: a) thequantitytobedelivered; b) thedesignationoftheproductform(e.g.roundorsquare); c) thenumberofthedimensionalstandard; d) thedimensionsandtolerancesondimensionsandshapeand,ifapplicable,lettersdenoting relevantspecialtolerances;Page7 EN10085:2001 e) thenumberofthisEuro
34、peanStandard(EN10085); f) steelnameorsteelnumber(see4.2); g) ifappropriate,thesymbolfortheheattreatmentconditionatdelivery(see6.2.1,6.2.2andTable 1); h) ifappropriate,thesymbolforthesurfaceconditionatdelivery(see6.2.3andTable2); i) ifrequired,thetypeofinspectiondocumentinaccordancewithEN10204(see8.1
35、). EXAMPLE 20roundsEURONORM6020x8000 EN1008534CrAlNi710+A EN102043.1.B or 20roundsEURONORM6020x8000 EN100851.8550+A EN102043.1.B 5.2Options AnumberofoptionsarespecifiedinthisEuropeanStandardandlistedbelow.Ifthepurchaserdoes notindicatehiswishtoimplementoneoftheseoptions,thesuppliershallsupplyinaccor
36、dancewith thebasisspecificationofthisEuropeanStandard(see5.1). a) anyspecialrequirementongrainsize(see7.3.1and8.2.2); b) anyrequirementconcerningtheadmissibleferritecontentinthecore(see7.3.2); c) anyrequirementforinternalsoundness(see7.4andB.3); d) anyrequirementrelatingtosurfacequality(see7.5.3); e
37、) anyrequirementregardingthepermissibledepthofdecarburization(see7.5.4); f) anyrequirementrelatingtoremovalofsurfacedefects(see7.5.5); g) anyverificationofthemechanicalpropertiesofreferencetestpiecesinthequenchedand temperedcondition(see8.2.1.1andB.1); h) anyrequirementconcerningspecialmarkingofthep
38、roduct(seeclause9andB.5); i) anyverificationoftheproductanalysis(seeTable8andB.4); j) anyrequirementconcerningnonmetallicinclusioncontent(seeB.2).Page8 EN10085:2001 6Manufacturingprocess 6.1General Themanufacturingprocessofthesteelandoftheproductsislefttothediscretionofthe manufacturerwiththerestric
39、tionsgivenbytherequirementsin6.2and6.3. 6.2Heattreatmentandsurfaceconditionatdelivery 6.2.1Normalconditionatdelivery Unlessotherwiseagreedatthetimeofenquiryandorder,theproductsshallbedeliveredinthe untreated,i.e.asrolledcondition(seeTable2,NOTEa). 6.2.2Particularheattreatmentcondition Ifsoagreedatth
40、etimeofenquiryandorder,theproductsshallbedeliveredinoneoftheheat treatmentconditionsgiveninTable1,lines2to4. 6.2.3Particularsurfacecondition Ifsoagreedatthetimeofenquiryandorder,theproductsshallbedeliveredinoneoftheparticular surfaceconditionsgiveninTable2,lines3to6. 6.3Castseparation Thesteelsshall
41、bedeliveredseparatedbycasts. 7Requirements 7.1Chemicalcomposition,hardnessandmechanicalproperties Therequirementsforchemicalcomposition,hardnessandmechanicalpropertiescitedinTable1, column9,applyasappropriatefortheparticularheattreatmentcondition. TherequirementsformechanicalpropertiesgiveninthisEur
42、opeanStandardarerestrictedtothe sizesgiveninTable6. 7.2Shearability Undersuitableshearingconditions(avoidinglocalstresspeaks,preheating,applicationofblades withaprofileadaptedtothatoftheproductetc.)allsteelsareshearableinthecondition“soft annealed”. 7.3Structure 7.3.1Unlessotherwiseagreed,thesteelwh
43、entestedinaccordancewithoneofthemethods describedinEURONORM103shallshowanausteniticgrainsizeof5orfiner. 7.3.2 Requirementsfortheferritecontentinthecoremaybeagreedatthetimeofenquiryandorder.Page9 EN10085:2001 7.4Internalsoundness Thesteelshallbefreefrominternaldefectslikelytohaveanadverseeffect(seeB.3). 7.5Surfacequalityanddecarburization 7.5.1Allproductsshallhaveaworkmanlikefinish. 7.5.2Minorsurfaceimperfections,whichmayoccurundernormalmanufacturingconditions,such asscoresoriginatingfromrolledinscaleinthecaseofhotrolledproducts,shallnotberegardedas
