1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3697:2013Aerospace series Acrylonitrile-butadiene rubber(NBR) Low temperatureresistant Hardness 60 IRHDBS EN 3697:2013 BRITISH STANDARDNational forewordThis British Standar
2、d is the UK implementation of EN 3697:2013.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic materials for aerospace purposes.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purp
3、ort to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 80158 7ICS 49.025.40Compliance with a British Standard cannot confer immunity fromlegal obligations
4、.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2013.Amendments issued since publicationDate Text affectedBS EN 3697:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3697 January 2013 ICS 49.025.40 English Version Aerospac
5、e series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 60 IRHD Srie arospatiale - Srie arospatiale - lastomre acrylonitrile butadine (NBR) - Rsistant aux basses tempratures - Duret 60 DIDC Luft- und Raumfahrt - Acrylinitril-Butadien-Elastomer (NBR) - Bestndig gegen ni
6、edrige Temperaturen - Hrte 60 IRHDThis European Standard was approved by CEN on 21 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to
7、-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 three official versions (English, French, German). A version in any other language made by translat
8、ion 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 bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland,
9、Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION CO
10、MIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3697:2013: EBS EN 3697:2013EN 3697:2013 (E) 2 Contents Page Forew
11、ord 3 1 Scope 4 2 Normative references 4 3 Application of the material 4 3.1 General 4 3.2 Typical use .4 3.3 Temperature range 4 4 Properties .4 5 Designation 6 6 Technical specification .6 BS EN 3697:2013EN 3697:2013 (E) 3 Foreword This document (EN 3697:2013) has been prepared by the Aerospace an
12、d Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried 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
13、 presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. Attention is drawn to the possibi
14、lity that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are
15、bound to implement this European Standard: 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, Port
16、ugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3697:2013EN 3697:2013 (E) 4 1 Scope This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) 1), low temperature resistant, hardness 60 IRHD, for aerospace applications.
17、 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amen
18、dments) applies. EN 3207, Aerospace series Rubber compounds Technical specification ISO 1629, Rubber and lattices Nomenclature ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids 3 Application of the material 3.1 General The suitability of the material for a specific
19、 application shall be determined by complementary tests carried out on the finished product as the properties specified in this standard are obtained from standard test specimens. 3.2 Typical use For applications where resistance to petroleum based fuels and lubricants is required together with resi
20、stance to low temperatures. 3.3 Temperature range Continuous service : from 45 C to 110 C; Intermittent service : from 45 C to 130 C. 4 Properties See Table 1 and Table 2 according to EN 3207. For qualification, all tests shall be performed. For batch acceptance, the tests identified with footnote “
21、a“ in Table 1 and Table 2 shall be performed. 1)Symbol as per ISO 1629.BS EN 3697:2013EN 3697:2013 (E) 5 Table 1 Test methods Line Column 1 2 3 Properties Units Requirements 1 Hardness IRHD 60 45+a2 3 Density Mg/m3a, b 4 5 Tensile strength MPa 11 min.a6 7 Elongation at break % 200 min.a8 9 Modulus a
22、t 100 % strain MPa 2,5 min. 10 11 Tear strength N/mm 12 13 Resistance to low temperatures TR 10 C 45 max. 14 Crystallization Point 15 Compression set % 15.1 After 24 h to 125 C 45 max.a15.2 After h to C 16 17 Ozone resistance Ozone concentration : ( ) pphm Elongation of test piece : % Time : h Tempe
23、rature : C 18 19 Corrosion and adhesion on metals Time : 168 h Temperature : 100 C no corrosion no adhesion 20 Corrosion and adhesion on metals 20.1 Time : h Temperature : C Humidity : % 20.2 Time : h Temperature : C Humidity : % 21 22 23 24 25 26 27 28 29 30 aTest for batch accepted. bThe value det
24、ermined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3. BS EN 3697:2013EN 3697:2013 (E) 6 Table 2 Tests Line Column 1 2 3 4 5 1 Test media Air Oil No. 1, see ISO 1817 Oil No. 3, see ISO 1817 2 Conditions of exposure in test media Units 70 h/125 C 70 h/1
25、25 C 70 h/125 C 3 Permitted variation of the properties compared to the initial value Volume % 200a520+a4 Mass % 5 Tensile strength % 15 35 6 Elongation at break % 50 40 7 Hardness IRHD + 15 15 8 aTest for batch acceptance. 5 Designation EXAMPLE Description block RUBBER Identity block EN3697 Number
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