1、- CEN PRENx2427 74 3404587 00bbL42 351 Edition approved for publication 1994-07-25 AECMA STANDARD NORME AECMA AECMA NORM The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE p
2、rEN 2429 Edition 1 July 1994 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATCRIEL AcROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (I) 47.36.98.76 UDC : 678.074 : 620.1 : 629.7 Descriptors : Aircraft industry, rubber, ethylene-propylene ru
3、bber, hardness ENGLISH VERSION Aerospace se ri es Ethylene-propylene rubber (EPM/EPDM) Hardness 60 IRHD Srie arospatiale Luft- und Raumfahrt lastomre thylne-propylne (EPM/EPDMI Ethylen-Propylen-Elastomer tEPM/EPDM) Duret 60 DIDC Hrte 60 IRHD This “Aerospace series” Standard has been drawn up under t
4、he responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions (English, French, German). It will be submitted as a draft European Standard to CEN (European Committee for Standardization1 for formal vote. Copyr
5、ight Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENm2429 94 = 3404589 00bbL43 298 Page 3 prEN 2429 : 1994 i Scope This standard specifies the propertie
6、s of ethylene-propylene rubber (EPM/EPDM) 11, hardness 60 IRHD, for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the
7、publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 162
8、9 IS0 181 7 EN 3207 Rubber and latices - Nomenctature Rubber, vulcanized - Determination of the effect of liquids Aerospace series - Rubber compounds - Technical specification 2) 3 Application of the material The suitability of the material for a specific application shall be determined by complemen
9、tary tests carried out on the finished product as the properties specified in this standard are obtained from standard test specimens. 3.1 Typical use Application requiring a resistance to ozone, weather and phosphate ester based hydraulic fluids. NOTE : This material shall not be used for the manuf
10、acture of dynamic seals in flight hydraulic systems. 3.2 Temperature range - Continuous service : from - 55 OC to + 125 OC - Intermittent service : from - 55 OC to + 160 OC 4 Properties See tables 1 and 2. For qualification, all tests shall be performed. For batch acceptance, the tests identified in
11、 tables 1 and 2 shall be performed. - .- 5 Designation Description block RUBBER Identity block EN2429 I Number of this standard I 6 Technical specification EN 3207 1) Symbol as per IS0 1629 2) In preparation at the date of publication of this standard Previous page is blank Copyright Association Eur
12、opeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENr2429 94 3404589 0066144 124 1 Properties Hardness Densitv Page 4 prEN 2429 : 1994 2 3 Units Requirements + 5 “) IRHD 60
13、- 4 Mdm3 11 *I Table 1 - Test methods Tensile strength Elongation at break I 20-1 MPa 10 min. 1 % 250 min.“) Tear strength I 202 N/mm 20 min. 30 Resistance to low termeratures TRI O OC - 35 max. Crystallization Compression set after 70 h to 100 OC after - h to - OC I I Modulus at - % strain I MPa I
14、Point % 40 max. “1 Ozone resistance Ozone concentration : ( 200 I20 ) pphm Time 168 h Elongation of test piece : 20 % Temperature 30 OC Corrosion and adhesion on metals in a dry atmosphere Time :-h Temperature : - OC Corrosion and adhesion on metals in a damp atmosphere Time :-h Temperature : - OC H
15、umidity :-% Nil cracking Time : - Oh Temperature : - OC Humidity - - Oh I 1 I I “1 Test for batch acceptance. 1) The value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/rn3. Copyright Association Europeene des Constructeurs de Materiel Aerospat
16、ial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Column Line 70 h1125 OC 1 24 h/l00 OC 2 variation of the properties compared to the initial value 3 % % Tensile strength Elongation at break Hardness IRHD 4 5 CEN PREN*K2429
17、 94 34011589 0066345 Ob0 Page 5 prEN 2429 : 1994 Table 2 - Tests after expo I 1 l2 Test media I- Conditions of exposure in test media Units I Mass I % Permitted I ire to test media Test fluid No. 103, see IS0 1817 +20 1 O - 20 -15 - 20 *I Test for batch acceptance. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
