1、BSI Standards PublicationBS EN 3826:2014Aerospace series Fluorosilicone rubber (FVMQ) Hardness 70 IRHDBS EN 3826:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 3826:2014.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, No
2、n-metallic materials for aerospace purposes.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards
3、 Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 86108 6ICS 49.025.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2015.Amendme
4、nts issued since publicationDate Text affectedBS EN 3826:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3826 December 2014 ICS 49.025.40 English Version Aerospace series - Fluorosilicone rubber (FVMQ) - Hardness 70 IRHD Srie arospatiale - Elastomre fluorosilicone (FVMQ) - Duret 70 DIDC Luf
5、t- und Raumfahrt - Fluorsilikon Elastomer (FVMQ) - Hrte 70 IRHD This European Standard was approved by CEN on 21 June 2014. 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 wit
6、hout 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 three official versions (English, French, German). A version in any other
7、 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 bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, D
8、enmark, Estonia, 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 COMMIT
9、TEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3826:2014 EBS EN 3826:2014E
10、N 3826:2014 (E) 2 Contents 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 3826:2014EN 3826:2014 (E) 3 Foreword This document (EN 3826:2014)
11、has been 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
12、member countries 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 June 2015, and conflicting national standards shall be withdrawn at the latest by June 20
13、15. Attention 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 organiza
14、tions 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, Mal
15、ta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3826:2014EN 3826:2014 (E) 4 1 Scope This European Standard specifies the properties of fluorosilicone rubber (FVMQ)1), hardness 70 IRHD, for aerospace applications
16、. 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 ame
17、ndments) applies. ISO 1629, Rubber and latices Nomenclature. ISO 1817, Rubber, vulcanized Determination of the effect of liquids. EN 3207, Aerospace series Rubber compounds Technical specification. 3 Application of the material 3.1 General The suitability of the material for a specific application s
18、hall 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 In contact with petroleum based fluids, aviation fuels, hydraulic fluids, lubricants, greases, silicone oil and some e
19、ster based fluids (not phosphate esters). 3.3 Temperature range Continuous service: from 55 C to 180 C; Intermittent service: from 55 C to 200 C. 4 Properties See Table 1 and Table 2. For qualification, all tests shall be performed. For batch acceptance, those identified “ shall be performed. 1)Symb
20、ol as per ISO 1629.BS EN 3826:2014EN 3826:2014 (E) 5 Table 1 Test methods Line Column 1 2 3 Properties Units Requirements 1 Hardness IRHD 70 45+ 2 3 Density Mg/m3a 4 5 Tensile strength MPa 5 min. 6 7 Elongation at break % 120 min. 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 12 13 Resistance
21、 to low temperatures TR10 C 55 max. 14 Crystallization Point 15 Compression set % 15.1 After 70 h to 150 C 25 max. 15.2 After h to C 16 17 Ozone resistance Ozone concentration : ( ) pphm Elongation of test piece : % Time : h Temperature : C 18 19 Corrosion and adhesion on metals Time : h Temperature
22、 : C 20 Corrosion and adhesion on metals 20.1 Time : h Temperature : C Humidity : % 20.2 Time : h Temperature : C Humidity : % 30 39 See clause 4. aThe value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3. BS EN 3826:2014EN 3826:2014 (E) 6 Ta
23、ble 2 Tests after exposure to test media Line Column 1 2 3 4 5 1 Test media Air Liquid B, see ISO 1817 Fluid 101, see ISO 1817 2 Conditions of exposure in test media Units 70 h/200 C 70 h/23 C 70 h/150 C 3 Permitted variation of the properties compared to the initial value Volume % + 25 + 12 4 Mass
24、% 5 Tensile strength % 30 40 6 Elongation at break % 35 30 7 Hardness IRHD 510+ 120See clause 4. 5 Designation EXAMPLE Description block RUBBER Identity block EN3826 Number of this standard 6 Technical specification EN 3207. This page deliberately left blankBSI is the national body responsible for p
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