1、BRITISH STANDARD AEROSPACE SERIES BS EN 2104:1996 Acrylonitrile-butadiene rubber (NBR) Hardness 40 IRHD The European Standard EN2104:1996 has the status of a British Standard ICS 49.040.10BSEN2104:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was
2、 published underthe authority of the Standards Board and comes intoeffect on 15June1996 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/25 Draft for comment 90/72945 DC ISBN 0 580 25656 1 Committees responsible for this British Standard The prepa
3、ration of this British Standard was entrusted to Technical Committee ACE/25, Rubber and elastomeric materials for aerospace purposes, upon which the following bodies were represented: British Adhesives and Sealants Association British Hydromechanics Research Group British Narrow Fabrics Association
4、British Rubber Manufacturers Association Ltd. Ministry of Defence Society of British Aerospace Companies Limited Amendments issued since publication Amd. No. Date CommentsBSEN2104:1996 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 N
5、ormative references 3 3 Application of the material 3 4 Properties 3 5 Designation 3 6 Technical specification 3 Table 1 Test methods 4 Table 2 Tests after exposure to test media 5 List of references Inside back coverBSEN2104:1996 ii BSI 11-1999 National foreword This British Standard has been prepa
6、red by Technical Committee ACE/25 and is the English language version of EN2104:1996 Aerospace series Acrylonitrile-butadiene rubber (NBR) Hardness 40 IRHD, published by the European Committee for Standardization (CEN). EN 2104:1996 was produced as a result of international discussion in which the U
7、nited Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-
8、references Publication referred to Corresponding British Standard ISO 1817:1985 BS 903 Physical testing of rubber Part A16:1987 Determination of the effects of liquids ISO 1629:1987 BS 3502 Symbols for plastics and rubber materials Part 2:1991 Schedule for symbols for rubbers Summary of pages This d
9、ocument comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside fro
10、nt cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2104 January 1996 ICS 49.040.10 Descriptors: Aircraft industry, materials, rubber, butadiene-acrylonitrile rubber, hardness English version Aerospace series Acrylonitrile-butadiene rubber (NBR) Hardness 40 IRHD Srie arospatiale Elastomre
11、butadine-nitrile acrylique (NBR) Duret40DIDC Luft- und Raumfahrt Acrylnitril-Butadien-Elastomer (NBR) Hrte 40 IRHD This European Standard was approved by CEN on1995-08-31. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea
12、n Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, F
13、rench, 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland
14、, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Bruss
15、els 1996 Copyright reserved to CEN members Ref. No. EN 2104:1996 EEN2104:1996 BSI 11-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this S
16、tandard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, 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 endorsem
17、ent, at the latest by July1996, and conflicting national standards shall be withdrawn at the latest by July1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Icel
18、and, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.EN2104:1996 BSI 11-1999 3 1 Scope This standard specifies the properties of acrylonitrile-butadiene rubber (NBR) 1) , hardness40 IRHD, for aerospace applications. 2 Normative references This European St
19、andard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply t
20、o this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 1629, Rubber and latices Nomenclature. ISO 1817, Rubber, vulcanized Determination of the effect of liquids. EN 3207, Aerospace series
21、Rubber compounds Technical specification 2) . 3 Application of the material 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 this standard are obtained from standard test specimens
22、. 3.1 Typical use General purpose application where resistance to mineral-oil-based fluids is required NOTEThese materials have poor natural weathering and ozone resistance, a test is not required. 3.2 Temperature range 4 Properties SeeTable 1 andTable 2. For qualification, all tests shall be perfor
23、med. For batch acceptance, the tests identified inTable 1 andTable 2 shall be performed. 5 Designation 6 Technical specification EN 3207 1) Symbol as per ISO1629 2) In preparation at the date of publication of this standard Continuous service : from 40 C to + 100 C Intermittent service : from 40 C t
24、o + 120 CEN2104:1996 4 BSI 11-1999 Table 1 Test methods Line Column 1 2 3 Properties Units Requirements 1 Hardness IRHD *) 2 3 Density Mg/m 3 1) *) 4 5 Tensile strength MPa 7 min. *) 6 7 Elongation at break % 450 min. *) 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 12 13 Resistance to low te
25、mperatures TR 10 C 30 max. 14 Crystallization Point 15 Compression set % 40 max. *) 15.1 after 72hat100 C 15.2 after hat C 16 17 Ozone resistance Ozone concentration Elongation of test piece Time Temperature : : : : ( ) pphm % h C 18 19 Corrosion and adhesion on metals in a dry atmosphere Time Tempe
26、rature : : h C 20 Corrosion and adhesion on metals in a damp atmosphere 20.1 Time Temperature Humidity Test fluid : : : : h C % 20.2 Time Temperature Humidity Test fluid : : : : h C % 21 22 23 24 25 26 27 28 29 30 *) Test for batch acceptance 1) The value determined for each batch shall not differ f
27、rom that determined at qualification by more than0.02Mg/m 3 . 40 +5 4 EN2104:1996 BSI 11-1999 5 Table 2 Tests after exposure to test media Line Column 1 2 3 4 5 1 Test media Air Oil No. 1 seeISO1817 2 Conditions of exposure in test media Units 70 h/100 C 70 h/100 C 3 Permitted variation of the prope
28、rties compared to the initial value Volume % *) 4 Mass % 10 max. 5 Tensile strength % 20 max. 6 Elongation at break % 50 max. 7 Hardness IRHD 8 *) Test for batch acceptance +10 25 +20 0 +30 06 blankBSEN2104:1996 BSI 11-1999 List of references See national foreword.BS EN 2104:1996 BSI 389 Chiswick Hi
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