1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3698:2013Aerospace series Acrylonitrile-butadiene rubber(NBR) Low temperatureresistant Hardness 70 IRHDBS EN 3698:2013 BRITISH STANDARDNational forewordThis British Standar
2、d is the UK implementation of EN 3698:2013. 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 be obtained on request to its secretary.This publication does not p
3、urport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 80159 4 ICS 49.025.40 Compliance with a British Standard cannot confer immunityfrom legal ob
4、ligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 3698:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3698 February 2013 ICS 49.025.40 Englis
5、h Version Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 70 IRHD Srie arospatiale - Srie arospatiale - lastomre acrylonitrile butadine (NBR) - Rsistant aux basses tempratures - Duret 70 IRHD Luft- und Raumfahrt - Acrylinitril-Butadien-Elastomer (NBR) -
6、 Bestndig gegen niedrige Temperaturen - Hrte 70 IRHDThis European Standard was approved by CEN on 27 October 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
7、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 three official versions (English, French, German). A version in any other language
8、 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 bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, E
9、stonia, Finland, 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 S
10、TANDARDIZATION COMIT 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 3698:2013: EBS EN 3698:2013EN 3698:2013 (E) 2 Co
11、ntents Page Foreword . 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 3698:2013EN 3698:2013 (E) 3 Foreword This document (EN 3698:2013) has been
12、prepared by the Aerospace and 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 co
13、untries of ASD, prior to its 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 August 2013, and conflicting national standards shall be withdrawn at the latest by August 2013. A
14、ttention is drawn to the possibility 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
15、 of the following countries are 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, N
16、etherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3698:2013EN 3698:2013 (E) 4 1 Scope This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) 1), low temperature resistant, hardness 70 I
17、RHD, for aerospace applications. 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 referen
18、ced document (including any amendments) applies. EN 3207, Aerospace series Rubber compounds Technical specification ISO 1629, Rubber and latices Nomenclature ISO 1817, Rubber, vulcanized Determination of the effect of liquids 3 Application of the material 3.1 General The suitability of the material
19、for a specific 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 toge
20、ther with resistance 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 w
21、ith footnote “a“ in Table 1 and Table 2 shall be performed. 1) Symbol as per ISO 1629.BS EN 3698:2013EN 3698:2013 (E) 5 Table 1 Test methods Line Column 1 2 3 Properties Units Requirements 1 Hardness IRHD 70 45+a2 3 Density Mg/m3a, b 4 5 Tensile strength MPa 12 min. a6 7 Elongation at break % 160 mi
22、n. a8 9 Modulus at 100 % strain MPa 3,5 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
23、: % Time : h Temperature : 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 accept
24、ed. bThe value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3. BS EN 3698:2013EN 3698:2013 (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
25、 70 h/125 C 70 h/125 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 + 12 15 8 aTest for batch acceptance. 5 Designation EXAMPLE Description block RUBBER Identity bl
26、ock EN3698 Number of this standard 6 Technical specification See EN 3207. This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Euro
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