1、 AECMA PREN*i25b7 95 1012311 0009397 75T m AECMA STANDARD prEN 2567 NORME AECMA Edition P 1 AECMA NORM April 1995 DIT PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue JeamJacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98 76 ICs : Descri
2、ptors : ENGLISH VERSION Aerospace series Fluorocarbon rubber (FPM) Hardness 80 IRHD Srie arospatiale lastomre fluor IFPM) Duret 80 DIDC Luft- und Raumfahrt Fluorocarbon-Elastomer (FPM) Hrte 80 IRHD This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association E
3、uropenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the tec
4、hnical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-iden rification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countr
5、ies it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be SuPalied by B.N.A E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 921 38 ISSY-LES-MOULINEAUX CEDEX 1 Comments should be sent within six months after
6、the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Edition approved for publication 1995-04-28 C7 Chairman Mr Bottrell 1 1 I I I aecma 1995 Page 3 prEN 2567 : 1995 1 Scope This standard specifies the properties of fluorocarbon rubb
7、er (FPM) l), hardness 80 IRHD, for aerospace applications. 1, 2 Normative references IS0 1629 Rubber and latices - Nomenclature IS0 181 7 EN 3207 Rubber, vulcanized - Determination of the effect of liquids Aerospace series - Rubber compounds - Technical specification 2) 3 Application of the material
8、 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. 3.1 Typical use Application requiring resistance to air, hydrocarbon and
9、synthetic oil, and fuels at elevated temperature. 3.2 Temperature range - Continuous service : - Intermittent service : from - 20 OC to + 225 OC from - 20 OC to + 250 OC 4 Properties See tables 1 and 2. For qualification, ail ests shall be performed. For batch acceptance, the tests identified in tab
10、les 1 and 2 shall be performed. 5 Designation Description block RUBBER Identity block EN2567 1 Number of this standard 6 Technical specification EN 3207 1) Symbol as per IS0 1629 2) In preparation at the date of publication of this standard AECMA PRENx25b7 95 9 1iOL231iL 0009399 522 9 1 Prooerties a
11、m 2 3 Units Reauiremenc C 2 3 4 5 6 7 R Page 4 prEN 2567 : 1995 Density Mg/m3 1) “1 Tensile strength M Pa 11 min. *) Elongation at break % 150 min. *) Table 1 - Test methods Modulus at - % strain Tear strength Resistance to low temperatures TR1 O Crystallization Compression set, after 24 h to 200 OC
12、 after 70 h to 200 OC Ozone resistance Ozone concentration : ( - - + - 1 pphm Elongation of test piece : % Time h Temperature OC M Pa N/mm OC - 12 max. Point % 35 max. *) 65 max. 1 20 Hardness I Temperature : 200 OC Corrosion and adhesion on metais in a damp 9 10 11 12 13 14 15 15.1 15.2 16 17 19 I
13、Corrosion and adhesion on metals in a dry1 atmosphere Time : 168 h atmosphere Time -h Temperature : - oc Humidity :-% Temperature : - oc Time -h Humiditv - Yo no corrosion no adhesion 24 25 28 39 30 1) The value determined for each batch shall not differ from that determined at qualification by more
14、 *) Test for batch acceptance. than 0,03 Mg/m3. Line 2 Units % % % % IRHD l2 3 Air 70 h/250 OC - 20 max. - 45 rnax. O l3 +3 -7 . +5 -10 c“ 8 Page 5 prEN 2567 : 1995 Table 2 - Tests after exposure to test media I, 1 Test media Conditions of exposure in test media Permitted variation of the properties compared to the initial value Volume Mass Tensile strength Elongation at break Hardness I “1 Test for batch acceptance. Liquid B, see IS0 1817 Liquid No. 101, see IS0 1817 70 h/40 OC 70 hl150 OC +12 *I +7 O I o +IO “I +7 O I o I
