1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 31 December 2004 prEN 61 11 Edition P 1 December 2004 Comments should be sent within six months after the date of publication to AECMA-STAN PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION d%k?&?!ff
2、! Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 81 10 - Fax. + 32 2 775 81 11 - www.aecma-stan.org ICs: Descriptors: ENGLISH VERSION Aerospace series Ethylene-propylene elastomer (EPM/EPDM) Hardness 80 IRHD for static seal elements in hydraulic systems for long-term application Material standard
3、 Srie arospatiale Luft- und Raumfahrt lastomre thylne propylne (EPM/EPDM) Duret 80 IRDH pour joints statiques en systmes hydrauliques pour application long terme Ethylen- Propylen- Elastomer (EPM/EPDM) Hrte 80 IRHD fr statische Dichtungen in Hydraulik- Systemen fr Langzeitanwendung Norme de matriau
4、Werkstoffnorm This “Aerospace Series“ frestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the co
5、ncerned Domain following member comments. Subsequent to the publication of this frestandard, the technical content shall not be changed to an extent that interchangeabilify is affected, physically or functionally, without re-identification of the standard. After examination and review by users and f
6、ormal agreement of AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the sta
7、tus of a national standard and by withdrawing any national standards conflicting with the EN. Mechanical Domain Copytight 2004 O by AECMA-STA1 Page 2 prEN 61 11 :2004 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Mechanical Material Domain. After inquiries an
8、d votes carried out in accordance with the rules of AECMA-STAN defined in AECMA- STANS General Contents Page 1 Scope 3 2 Normative references . 3 3 Requirements 3.1 General 3.2 Specific . 3.2.1 Physical and mechanical requirements 3.2.2 Test specimens . 3.2.3 Hazardous constituents 4 Designation 5 T
9、echnical specification Page 3 prEN 61 11 :2004 1 Scope This material standard defines the requirements of ethylene-propylene (EPM/EPDM) elastomer for seal elements for use in hydraulic systems using phosphate ester fluids, hardness 80 IRHD for long-term application for aerospace application. Unless
10、otherwise specified by the drawing, the order or the inspection schedule, the present specification shall be used in conjunction with the referenced documents. Applicable temperature range: - Continuous service: - 55 “C to 107 “C - Intermittent service: - 55 “C to 120 “C 2 Normative references This
11、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 publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publicati
12、ons 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 (including amendments). IS0 48, Rubber, vulcanized or thermoplastic - Determination of hardness (Hardness between 70 IRHD and 70
13、0 IRHD) IS0 188, Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests IS0 181 7, Rubber, vulcanized - Determination of the effect of liquids IS0 2781, Rubber, vulcanized - Determination of density EN 6075, EN 6076, Aerospace series - Static seal elements O-Ring ethylene
14、-propylene, moulded, phosphate ester resistant (- 55 “C to 707 OC) - Inch series Aerospace series - Static seal elements O-Ring straight thread tube fitfing boss, ethylene- propylene, moulded, phosphate ester resistant (- 55 “C to 707 OC) - Inch series ) EN 6109, Aerospace series - Static seal eleme
15、nts elastomer, moulded, phosphate ester resistant - Technical specification ASTM D 1414, Standard test methods for rubber O-rings 2, ASTM D 3677, Standard test methods for rubber - Identification by infrared spectrophotometry 2, ASTM E 1 131, Standard test method for compositional analysis by thermo
16、gravimetry 2, 1) Published as AECMA Prestandard at the date of publication of this standard 2) Published by: American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA Page 4 prEN 61 11 :2004 3 Requirements 3.1 Genera I Specification values relate
17、 to the arithmetic mean from the corresponding test and are minimum except where stated. 3.2 Specific 3.2.1 Physical and mechanical requirements In accordance with Table 1. For qualification, all tests shall be performed. 3.2.2 Test specimens For the minimum number of test specimens, see EN 6109 Tab
18、les 1 and 2. Test specimens for qualification shall be O-Rings according to EN 6075 or EN 6076. If not specified otherwise in EN 6109 Table 1, the cross section of the test specimen shall be between 2,62 mm and 333 mm (0.103 inch to 0.139 inch) with an optional diameter. For acceptance testing of O-
19、Rings and other seal elements the original parts shall be tested. 3.2.3 Hazardous constituents The relevant local health and safety/environmental protection laws shall be fulfilled. 4 Designation EXAMPLE Description block I Identity block ELASTOMER I EN6111 -r Number of this standard NOTE If necessa
20、ry, the code I9005 shall be placed between the description block and the identity block. 5 Technical specification The general technical requirements and responsibilities corresponding to this material standard are described in the technical specification EN 61 09. Page 5 prEN 61 1 1 :2004 Line No.
21、1 Properties Test methods Units Requirements Properties in as-delivered condition 2 3 Density Hardness IRHD IS0 2781 IS0 48 M 4 I Tensile strength MPa I 997 5 I Elongation at break % I 125 6 I Stress value (oloo) MPa I 595 4 ASTM D 14 OC I Resistance to low TR 10 TR 70 I temperature 9 I Compression
22、set after 22 h at 120 “C % I 30max. 1 O I Infra-red spectroscopic analysis (IR) ASTM D 3677 I bc Compositional analysis by thermogravimetries I(TGA) ASTM E 1131 Properties after immersion according to IS0 1817 in phosphate ester test fluids as required in EN 6109 107 “U334 h - 20 max. 107 “U670 h b
23、- 20 max. 107 “C/1 O00 h - 20 max. e Hardness IRHD i IS0 48 M - 20 max. - 20 max. 107 “C/1 440 h 107 “C/1 880 h 120 “CP2 h - 20 max. 107 “U334 h +2: max. k 107 “U670 h +2: max. k + max. gk 107 “C/1 O00 h 107 “C/1 440 h 107 “C/1 880 h IS0 1817 % Volume 24 hk +2: max. hk +2: max. 120 “CP2 h +2: max. k
24、 I continued Page 6 prEN 61 1 1 :2004 Units Table 1 - Requirements (concluded) Requirements Line No. Elongation at break Stress value (aloo) Properties 107 “U334 h 1 20C/22 h 1 20CD2 h 107“C/334 h 1 20C/22 h 1 20CD2 h Test methods % N/mm2 125 125 125 394 394 I 25 107 “U334 h Tensile strength 1 20C/2
25、2 h 26 N/mm2 I 993 27 I 9 28 29 30 ASTM D 1414 31 32 I 33 I 394 34 70CD2h Resistance to low temperature OC 35 I 36 Properties after wetting according to EN 6109 5.1.2.2 with phosphate ester test fluids 37 70 “CD2 h Compression set 20 max. 20 max. ASTM D 1414 38 39 Properties after accelerated temper
26、ature according to IS0 188 40 Hardness IRHD i I - I +IO I 41 Tensile strength i I 150 “U72 h %-+ ASTM D 1414 42 Elongation at break i I Value has to be determined for qualification. The value determined for the batch shall not differ from that determined at qualification by more than f 0,02 g/cm3. V
27、alue/graph has to be determined for qualification. For acceptance: FTIR peaks should be within f 10 cm- of the peaks of the qualification spectrum. Weight loss should be within 13 % of that observed in the qualification curve for the same temperature range and derivative slopes should be identical.
28、The hardness results between 1 O00 h and 1 440 h shall not decrease more than 2 IRHD. Only if “ is not respected but the decrease between 1 O00 h and 1 440 h is within 2 IRHD to 4 IRHD the hardness results between 1 440 h and 1 880 h shall not decrease more than 2 IRHD. I The volume swell results to
29、lerance between 1 O00 h and 1 440 h shall not be more than f 0,5 %. Only if “ is not respected but if the decrease between 1 O00 h and 1 440 h is within - 0,5 % to - 1 % or if the increase between 1 O00 h and 1 440 h is within 0,5 % to 1 % the volume swell results between 1 440 h and 1 880 h shall not decrease more than 0,5 % and shall not increase more than 0,5 %. Permitted variation compared to the initial value. No single value shall be below O. I
