1、Aerospace series - Flange couplings - Gasket seal with nickel alloy C seal on heat resisting steel plate with 4 fastening holes - Inch seriesBS EN 4812:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation
2、 of EN 4812:2017.The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the neces
3、sary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 95343 9ICS 49.080Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was
4、published under the authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 4812:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4812May 2017ICS 49.080EUROPEAN COMMITTEE FOR STANDARDIZATIONCO
5、MIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN 4812:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersAerospace series - Flange couplings - Gasket
6、seal with nickel alloy C seal on heat resisting steel plate with 4 fastening holes - Inch seriesSrie arospatiale - Raccordement bride - Joint plaque avec joint C en alliage de nickel sur plaque en acier rsistant chaud avec 4 trous de fixation - Srie en inchesLuft- und Raumfahrt - Rohrverschraubung m
7、it Flanschen - Flachdichtung aus Nickellegierung, mit Stahlarmierung aus hochwarmfestem Stahl mit 4 Befestigungslchern - Inch-ReiheThis European Standard was approved by CEN on 14 November 2016.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
8、or giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.This European Standard exists in thre
9、e official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN members are the national standards bodi
10、es of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slov
11、enia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 4812:2017 (E)European foreword 31 Scope . 42 Normative references 43 Required characteristics 43.1 Configuration Dimensions Tolerances Masses 43.2 Material . 43.3 Surface treatment . 53.4 Assembly 54 Designation 65 Identif
12、ication marking . 66 Technical specification . 67 Quality Assurance 62Contents PageBS EN 4812:2017EN 4812:2017 (E)European forewordThis document (EN 4812:2017) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN).After enquiries and votes carri
13、ed out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN.This European Standard shall be given the status of a national standard, either by
14、publication of an identical text or by endorsement, at the latest by November 2017, and conflicting national standards shall be withdrawn at the latest by November 2017.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not
15、 be held responsible for identifying any or all such patent rights.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, E
16、stonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.3BS EN 4812:2
17、017EN 4812:2017 (E)1 ScopeThis standard specifies the characteristics of gasket seal with nickel alloy C seal on heat resisting steel, 4 holes, for pipe couplings for inch series aerospace applications.Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thicknes
18、s in the assembly (see EN 4814).Temperature range: 55 C to 600 C.NOTE Assembly in accordance with TR 4815.This part should not be reused after disassembling.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its a
19、pplication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 2407, Aerospace series Heat resisting alloy NI-PH2601(NiCr19Fe19Nb5Mo3) Solution treated and precipitation treated Sheet, stri
20、p and plate 0,2 mm a 10 mmEN 2424 , Aerospace series Marking of aerospace productsEN 2516 , Aerospace series Passivation of corrosion resisting steels and decontamination of nickel base alloysEN 3480 , Aerospace series Steel FE-PA3601 (X6CrNiTi18-10) Air melted Softened Plate 6 mm a 50 mm 500 MPa Rm
21、 700 MPaEN 3488 , Aerospace series Steel FE-PA3601 (X6CrNiTi18-10) Air melted Softened Sheet and strip a 6 mm 500 MPa Rm 700 MPaEN 4814, Aerospace series Flange couplings up to 21 000 kPa Technical specification Inch seriesEN 4816, Aerospace series Flange couplings Gasket seal with nickel alloy C se
22、al Technical specification Inch seriesEN 9100 , Quality Management Systems Requirements for Aviation, Space and Defense OrganizationsISO 1458 , Metallic coatings Electrodeposited coatings of nickelTR 4815, Aerospace series Flange couplings up to 21 000 kPa Design standard Inch series1)3 Required cha
23、racteristics3.1 Configuration Dimensions Tolerances MassesSee Figure 1 and Table 1. Dimensions and tolerances are in millimetres, except otherwise specified.3.2 MaterialPlate: EN 3480 or EN 3488 .Seal: EN 2407.1) Published as ASD-STAN Technical Report at the date of publication of this standard. ( h
24、ttp:/www.asd-stan.org/ )4 BS EN 4812:2017EN 4812:2017 (E)3.3 Surface treatmentPlate: Passivation EN 2516 .Seal: ISO 1458 .3.4 AssemblyC seal shall not be disassembled from the plate after a drop down from at least 200 mm height.Key1 3D view2 Surface geometric tolerance applies to F and R13 Marking4
25、Hole diameter for the fluid flow equal to S5 Form not stated are left to the manufacturers discretion with a theoretical diameter of 1,57 mm and a thickness of 0,15 mm minimum.Figure 15BS EN 4812:2017EN 4812:2017 (E)Table 1Dimension-al code aNominal diameterB C D E F G R1 R2 S Mass cinch mm Theo. Th
26、eo. 0,1 Theo. bTheo. 0,05 Theo. min max Theo. 10A .625 15,875 26,36 13,18 5,1 21,21 28,45 1,32 5,56 5,08 8,13 13,5 6,210B .625 15,875 28,30 14,15 6,6 21,21 31,20 1,32 6,76 5,08 8,13 13,5 8,512A .750 19,050 29,36 14,68 5,1 24,38 31,75 1,32 5,56 5,08 8,13 17,0 6,912B .750 19,050 30,48 15,24 6,6 24,38
27、40,23 1,32 6,76 5,08 8,13 17,0 11,016A 1.000 25,400 33,32 16,66 5,1 30,58 38,10 1,32 5,56 5,08 8,13 23,1 7, 516B 1.000 25,400 35,92 17,96 6,6 30,58 46,84 1,32 6,76 6,60 9,91 23,1 13,120B 1.250 31,750 42,06 21,03 6,6 37,90 46,84 1,32 6,76 6,60 9,91 28,9 11,524B 1.500 38,100 46,02 23,01 6,6 43,94 53,9
28、7 1,32 7,14 6,60 9,91 34,9 13,528B 1.750 44,450 52,37 26,06 6,6 51,61 60,32 1,32 7,14 6,60 9,91 41,2 14,132C 2.000 50,800 60,32 30,17 8,2 61,01 69,85 1,32 7,92 7, 87 11,68 46,8 16,8aThis code is composed with the following elements: Nominal diameter given in 16thof inches within 2 digit; Bolt nomina
29、l thread diameter A: .1900 in (4,826 mm); B: .2500 in (6,35 mm); C: .3125 in (7,938 mm). bThis dimension is a design reference not directly measured but calculated by subtracting average torus diameter value from average external diameter value of the C seal at free state. cMass quoted in kg/1 000 p
30、arts. 4 DesignationEXAMPLE NOTE If necessary, the code I9005 shall be placed between the description block and the identity block.5 Identification markingEN 2424 , category A, as indicated on Figure 1. Marking shall not be embossed.6 Technical specificationEN 4816 with minimum pressure values for pr
31、essurizing tests.7 Quality AssuranceApproval of the manufactures.See EN 9100 .6 BS EN 4812:2017This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter
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