1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Aerospace series Fluorocarbon rubber (FKM) Low compressions set Hardness 50 IRHDBS EN 2795:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2795 March 2018 ICS 49.025.40 English Version Aerospace series - Fluoro
2、carbon rubber (FKM) - Low compressions set - Hardness 50 IRHD Srie arospatiale - lastomre fluor (FKM) - Faible dformation rmanente aprs compression - Duret 50 DIDC Luft- und Raumfahrt - Fluorcarbon-Elastomer (FKM) - Niedriger Druckverformungsrest - Hrte 50 IRHD This European Standard was approved by
3、 CEN on 13 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 stan
4、dards 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 language and n
5、otified 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, Hungary,
6、 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 NORMUNG CEN-
7、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 2795:2018 ENational forewordThis British Standard is the UK implementation of EN 2795:2018.The UK participation i
8、n 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 contract. User
9、s are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 51924 6ICS 49.025.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of
10、the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 2795:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2795 March 2018 ICS 49.025.40 English Version Aerospace series - Fluorocarbon rubber (FKM)
11、- Low compressions set - Hardness 50 IRHD Srie arospatiale - lastomre fluor (FKM) - Faible dformation rmanente aprs compression - Duret 50 DIDC Luft- und Raumfahrt - Fluorcarbon-Elastomer (FKM) - Niedriger Druckverformungsrest - Hrte 50 IRHD This European Standard was approved by CEN on 13 November
12、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 be obtaine
13、d 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 the CEN-C
14、ENELEC 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, Ireland, I
15、taly, 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 Management C
16、entre: 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 2795:2018 EBS EN 2795:2018EN 2795:2018 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Application of th
17、e material 4 4 Properties 4 5 Designation . 6 6 Technical specification . 6 BS EN 2795:2018EN 2795:2018 (E) 3 European foreword This document (EN 2795:2018) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried
18、 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 p
19、ublication of an identical text or by endorsement, at the latest by September 2018, and conflicting national standards shall be withdrawn at the latest by September 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or
20、CENELEC 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 Re
21、public, 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 the United Kin
22、gdom. BS EN 2795:2018EN 2795:2018 (E) 4 1 Scope This document specifies the properties of fluorocarbon rubber (FKM)1), low compression set, hardness 50 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
23、 content 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
24、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 for a specific application shall be determined by complementary tests carried out on the finished product as the properties specified in
25、this standard are obtained from standard test specimens. 3.2 Typical use Application requiring a resistance to air, hydrocarbon and synthetic oils, fuels at elevated temperature and low compression set properties. 3.3 Temperature range Continuous service: from 20 C to 225 C; Intermittent service: fr
26、om 20 C to 250 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) Symbol as per ISO 1629. BS EN 2795:2018EN 2795:2018 (E) 5 Table 1 Test methods Line Column 1 2 3 Properties Units Requirements 1 Ha
27、rdness IRHD 50 45+ 2 3 Density Mg/m3a 4 5 Tensile strength MPa 8 min. 6 7 Elongation at break % 200 min. 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 12 13 Resistance to low temperatures TR10 C 12 C 14 Crystallization Point 15 Compression set % 15.1 After 70 h to 200 C 25 max. 15.2 After h t
28、o 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 Time : 168 h Temperature : 200 C no corrosion no adhesion 20 Corrosion and adhesion on metals 20.1 Time : h Temperature : C Humid
29、ity : % 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 2795:2018EN 2795:2018 (E) 6 Table 2 Tests after exposure to test media Line Column 1 2 3 4 5 1 Test media
30、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 max. 6 Elongation at break % 20 max. 7 Hardne
31、ss IRHD 5 5 150See Clause 4. 5 Designation EXAMPLE Description block RUBBER Identity block EN2795 Number of this standard 6 Technical specification See EN 3207. BS EN 2795:2018This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British
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