1、BRITISH STANDARD AEROSPACE SERIES BS EN 4031:2001 Pipe coupling 8 30 in titanium alloy Nut for welded ferrule The European Standard EN 4031:2001 has the status of a British Standard ICS 49.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 4031:2001 This British Standard
2、, having been prepared under the direction of the Engineering Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 19 October 2001 BSI 19 October 2001 ISBN 0 580 37127 1 National foreword This British Standard is the official English lang
3、uage version of EN 4031:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/69, Aerospace Hydraulic Systems, Fluids and Components, 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 6, an inside back cover 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 EN403
8、1 September2001 ICS49.080 Englishversion AerospaceseriesPipecoupling830intitaniumalloyNutfor weldedferrule SriearospatialeSystmederaccordement830en alliagedetitaneEcroupourolivesoude LuftundRaumfahrtRohrverschraubung830aus TitanlegierungMutterfrAnschweistutzen ThisEuropeanStandardwasapprovedbyCENon2
9、9December2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagement
10、CentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandards
11、bodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassa
12、rt,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN4031:2001EEN4031:2001(E) Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers(AECMA). Afterinquiriesandvotescarriedoutinaccordancewithther
13、ulesofthisAssociation,thisStandardhasreceivedthe approvaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesofAECMA,priortoitspresentation toCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorby endorsement,atthelatestbyMarch2002,a
14、ndconflictingnationalstandardsshallbewithdrawnatthelatestbyMarch 2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesare boundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany, Greece,Iceland,Ireland,I
15、taly,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnited Kingdom. 2 Page2 EN4031:2001 19October2001EN4031:2001(E) 1Scope Thisstandardspecifiesthecharacteristicsofnutsforweldedferrules,forpipecouplings830,intitaniumalloy,for aerospaceapplications. Nominalpressure:upto28000kPa
16、Temperaturerange: 55Cto135C 2Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications.Thesenormative referencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.Fordatedreferences, subsequentamendmentstoorrevisionsofanyoft
17、hesepublicationsapplytothisEuropeanStandardonlywhen incorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies (includingamendments). ISO58553, AerospaceMJthreadsPart3:Limitdimensionsforfittingsforfluidsystems. ISO8788, AerospaceNuts,metric Tolerances
18、offormandposition EN2424, AerospaceseriesMarkingofaerospaceproducts. EN2497, AerospaceseriesDryabrasiveblastingoftitaniumandtitaniumalloys. EN3275, AerospaceseriesPipecoupling830upto28000kPaDynamicbeamsealMetricseriesTechnical specification. EN3311, AerospaceseriesTitaniumalloyTIP64001AnnealedBarfor
19、machining D 150mm. 1) EN3312, AerospaceseriesTitaniumalloyTIP64001Grade2AnnealedForgings D e 150mm. 1) EN3314, AerospaceseriesTitaniumalloyTIP64001SolutiontreatedandagedBarformachining D 75mm. 1) 1 )PublishedasAECMAPrestandardatthedateofpublicationofthisstandard 3 Page3 EN4031:2001 19October2001EN40
20、31:2001(E) 3Requiredcharacteristics 3.1ConfigurationDimensionsMass Accordingtofigure1andtable1.Thevaluesapplybeforelubricating. 3.2Surfaceroughness Accordingtofigure1. 3.3Material AccordingtoEN3311orEN3314. 3.4Surfacetreatment Lubrication:PTFE(e.g.Tegliss31 2) )coating,seeannexAonthe110contactarea.O
21、nlypriortoapplicationofthelubricantthe surfaceshallbeabrasiveblastedusingnonmetallicgritaccordingtoEN2497. Dimensionsinmillimetres a Areaformarking b Thread c Threadminordiameter d 0,3to0,6applicabletobothfaces Figure1 2 )Tegliss31isanexampleofasuitablecommercialproduct.Thisinformationisonlygivenfor
22、the convenienceofusersofthisstandardanddoesnotconstituteanendorsementbyCENofthis product 4 Page4 EN4031:2001 19October2001EN4031:2001(E) Table1 Dimensionsinmillimetres Code a Thread b d 1 d 2 e l 1 l 2 c l 3 m r 1 r 2 s T d Mass g/piece 4H5H B11 0 0 ,2 min. 0,4 + 0 0 ,2 0,2 0,1 0,1 h13 max. 05 MJ101
23、 6,2 15,51 7,1 8,8 12,0 0,4 0,6 14 0,36 5,59 06 MJ121,25 7,2 17,77 8,3 10,1 13,0 0,5 0,7 16 0,43 7,65 08 MJ141,5 9,2 17 20,03 8,5 9,7 11,5 14,5 18 7,89 10 MJ161,5 11,5 19 23,36 7,5 11,6 21 10,09 12 MJ181,5 13,5 21 24,49 8,0 11,7 15,0 22 10,26 14 MJ201,5 15,4 23 26,75 9,8 11,8 24 0,52 11,30 16 MJ221,
24、5 17,6 26 30,14 9,9 12,0 27 14,40 18 MJ241,5 19,7 28 33,53 10,0 12,1 16,0 0,6 0,8 30 21,61 20 MJ271,5 21,8 31 35,72 32 24,18 22 MJ301,5 23,8 35 39,98 36 28,92 25 MJ331,5 26,9 38 45,63 7,0 41 0,62 37,31 28 MJ361,5 29,9 41 51,28 7,0 46 41,35 32 MJ391,5 34,0 45 55,80 8,0 10,1 12,3 17,0 50 51,82 a Corre
25、spondstothepipenominaloutsidediameter. b AccordingtoISO58553. c Minimumuseablethreadlength. d AccordingtoISO8788. 4Designation EXAMPLE NOTEIfnecessary,thecode I 9005shallbeplacedbetweenthedescriptionblockandtheidentityblock. 5Marking AccordingtoEN2424,styleAandfigure1. 6Technicalspecification Accord
26、ingtoEN3275,type II. 5 Page5 EN4031:2001 19October2001EN4031:2001(E) AnnexA (normative) PTFEcoating A.1Formulation PTFEresinbindersarepermitted. A.2Application/processing Coatingshallbeappliedbybrushorspray. Chloridicsolventsshallnotbeusedforsurfacepreparation. Thetemperatureshallnotexceed400C. A.3F
27、inalcoatingthickness 5mto13m A.4Coefficientoffriction 0,12 A.5Adhesion/wearresistance 25repeatedassemblies(minimum)withoutincreaseofthecoefficientoffrictiontoA.4. A.6Hydraulicfluidresistance ShallmeetrequirementsofA.5after30dimmersioninhydraulicfluidsatambienttemperature. A.7Solventresistance Shallm
28、eetrequirementsofA.5after30dimmersionatambienttemperatureinindustrialmethylatedspirit(IMS), methylethylketone(MEK),WhiteSpirit. 6 Page6 EN4031:2001 19October2001blankBS EN 4031:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body respon
29、sible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendm
30、ents or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be fou
31、nd on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publicat
32、ions should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as Britis
33、h Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give deta
34、ils on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits conta
35、ct Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardizati
36、on bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude th
37、e free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.
