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    EN 2796-2018 Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD.pdf

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    EN 2796-2018 Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD.pdf

    1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Aerospace series - Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHDBS EN 2796:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2796 August 2018 ICS 49.025.40 English Version Aerospace series -

    2、 Fluorocarbon rubber (FKM) - Low compressions set - Hardness 60 IRHD Srie arospatiale - lastomre fluor (FKM) - Faible dformation rmanente aprs compression - Duret 60 DIDC Luft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) -Niedriger Druckverformungsrest - Hrte 60 IRDH This European Standard was appr

    3、oved by CEN on 20 November 2017. 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-date lists and bibliographical references concerning such nation

    4、al 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 translation under the responsibility of a CEN member into its own languag

    5、e 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, H

    6、ungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMU

    7、NG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2796:2018 ENational forewordThis British Standard is the UK implementation of EN 2796:2018.The UK particip

    8、ation in its preparation was entrusted to Technical Committee 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 purport to include all the necessary provisions of a contrac

    9、t. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 52318 2ICS 49.025.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the author

    10、ity of the Standards Policy and Strategy Committee on 31 August 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 2796:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2796 August 2018 ICS 49.025.40 English Version Aerospace series - Fluorocarbon rubb

    11、er (FKM) - Low compressions set - Hardness 60 IRHD Srie arospatiale - lastomre fluor (FKM) - Faible dformation rmanente aprs compression - Duret 60 DIDC Luft- und Raumfahrt - Fluorocarbon-Elastomer (FKM) -Niedriger Druckverformungsrest - Hrte 60 IRDH This European Standard was approved by CEN on 20

    12、November 2017. 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-date lists and bibliographical references concerning such national standards may b

    13、e 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 translation under the responsibility of a CEN member into its own language and notified to

    14、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, I

    15、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Man

    16、agement Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2796:2018 EBS EN 2796:2018EN 2796:2018 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Applicat

    17、ion of the material 4 4 Properties 4 5 Designation . 6 6 Technical specification . 6 BS EN 2796:2018EN 2796:2018 (E) 3 European foreword This document (EN 2796:2018) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and vote

    18、s 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 presentation to CEN. This European Standard shall be given the status of a national standard, ei

    19、ther by publication of an identical text or by endorsement, at the latest by February 20219, and conflicting national standards shall be withdrawn at the latest by February 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN

    20、 shall not 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,

    21、 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, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. BS EN

    22、 2796:2018EN 2796:2018 (E) 4 1 Scope This European Standard specifies the properties of fluorocarbon rubber (FKM)1), low compression set, hardness 60 IRHD, for aerospace applications. 2 Normative references The following documents are referred to in the text in such a way that some or all of their c

    23、ontent constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3207, Aerospace series Rubber compounds Technical specification ISO 1629, Rubber and la

    24、tices Nomenclature ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia:

    25、 available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 4 Application of the material 4.1 General The suitability of the material for a specific application shall be determined by complementary tests carried out on the finished product as the proper

    26、ties specified in this European Standard are obtained from standard test specimens. 4.2 Typical use Application requiring a resistance to air, hydrocarbon and synthetic oils, fuels at elevated temperature and low compression set properties. 4.3 Temperature range Continuous service: from 20 C to 225

    27、C; Intermittent service: from 20 C to 250 C. 5 Properties See Table 1 and Table 2. For qualification, all tests shall be performed. For batch acceptance, those identified “*” shall be performed. 1)Symbol as per ISO 1629. BS EN 2796:2018EN 2796:2018 (E) 5 Table 1 Test methods Line Column 1 2 3 Proper

    28、ties Units Requirements 1 Hardness IRHD 60 45+* 2 3 Density Mg/m3a* 4 5 Tensile strength MPa 10 min. * 6 7 Elongation at break % 180 min. * 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 12 13 Resistance to low temperatures TR10 C 12 max. 14 Crystallization Point 15 Compression set % 15.1 Afte

    29、r 70 h to 200 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 in a dry atmosphere no corrosion no adhesion Time : 168 h Temperature : 200 C 20 Corrosion and adhesion on me

    30、tals 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 0,03 Mg/m3. BS EN 2796:2018EN 2796:2018 (E) 6 Table 2 Tests after exposure to test

    31、 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/250 C 70 h/23 C 70 h/200 C 3 Permitted variation of the properties compared to the initial value Volume % 010+015+4 Mass % 5 max. * 5 Tensile strength % 20 m

    32、ax. 6 Elongation at break % 20 max. 7 Hardness IRHD 5 * 5 150* See Clause 4. 6 Designation EXAMPLE 7 Technical specification See EN 3207. BS EN 2796:2018This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other st

    33、andards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, government, consumers, innovators

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    35、s to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and dow

    36、nload PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purchased.If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from

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    38、 licensed such information to BSI for commercial publication and use.Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribute, commercially exploit, or publicly display the standard or any portion thereof

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    42、ct (see Subscriptions).Reproducing extractsFor permission to reproduce content from BSI publications contact the BSI Copyright & Licensing team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on our subscription products go

    43、 to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date.You can keep in touch with standards developments and receive substantial

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