1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2008 SAE International All rights reserved. No part of this publication may
3、 be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) F
4、ax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.orgAMS3239F AEROSPACEMATERIALSPECIFICATIONIssued 1953-02 Reaffirmed 1999-09 Revised 2008-06 Superseding AMS3239E Butyl (IIR) Rubber Phosphate Ester Resistant 85 - 95 RATIONALEAMS3239F is a Five Year Review and update of this speci
5、fication. 1. SCOPE 1.1 Form This specification covers a butyl (IIR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. 1.2 Application These products have been used typically for parts such as V-rings, gaskets, grommets, and seals requiring resistance to phosphate esters or l
6、ow permeability to gases, but usage is not limited to such applications. These products are not suitable for use in contact with petroleum-base fluids due to excessive swell. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this sp
7、ecification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measu
8、res to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unle
9、ss a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE AMS3239F - 2 -2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendal
10、e, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2279 Tolerances, Rubber Products AMS2810 Identification and Packaging, Elastomeric Products 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West C
11、onshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 297 Rubber Products - Chemical Analysis ASTM D 395 Rubber Property - Compression Set ASTM D 412 Vulcanized Rubber and Thermoplastic Elastomers - Tension ASTM D 471 Rubber Property - Effect of Liquids ASTM D 573 Rubber - Deterioratio
12、n in an Air Oven ASTM D 624 Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersASTM D 1149 Rubber Deterioration - Cracking in an Ozone Controlled Environment ASTM D 2137 Rubber Property - Brittleness Point of Flexible Polymers and Coated Fabrics ASTM D 2240 Rubber Property -
13、 Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on a butyl (IIR) elastomer, suitably cured to produce a product meeting the requirements of 3.2.3.2 Properties The product shall conform to the requirements shown in Table 1, 3.2.6, and 3.2.7; tests shall be perfor
14、med on the product supplied and in accordance with specified test methods, insofar as practicable. TABLE 1 - PROPERTIESParagraph Property Requirement Test Method 3.2.1 As Received 3.2.1.1 Hardness, Durometer “A” or equivalent 90 5 ASTM D 2240 3.2.1.2 Tensile Strength, minimum1500 psi (10.3 MPa) ASTM
15、 D 412, Die B or C 3.2.1.3 Elongation, minimum 200%ASTM D 412, Die B or C 3.2.1.4 Tear Resistance pounds per inch (kg/m) minimum 80% of Preproduction Value ASTM D 624, Die B or C 3.2.1.5 Specific Gravity Preproduction Value 0.03 ASTM D 297 3.2.2 Phosphate Ester Resistance (Immediate Deteriorated Pro
16、perties)ASTM D 471 Tri-n-butylphosphateTemperature: 212 F 2 (100 C 1) Time: 70 hours 0.5 3.2.2.1 Hardness Change, Durometer “A” or equivalent 0 to -35 SAE AMS3239F - 3 -TABLE 1 - PROPERTIESParagraph Property Requirement Test Method 3.2.2.2 Tensile Strength Change, maximum -25%3.2.2.3 Elongation Chan
17、ge, maximum -20%3.2.2.4 Volume Change 0 to +30% 3.2.3 Dry Heat Resistance ASTM D 573 Temperature: 212 F 2 (100 C 1) Time: 70 hours 0.5 3.2.3.1 Hardness Change, Durometer “A” or equivalent 0 to +5 3.2.3.2 Tensile Strength Change, maximum -15%3.2.3.3 Elongation Change, maximum -35%3.2.4 Compression Se
18、t ASTM D 395, Method B Temperature: 212 F 2 (100 C 1) Time: 70 hours 0.5 3.2.4.1 Percent of Original Deflection, maximum 903.2.5 Low-Temperature Resistance 3.2.5.1 Brittleness Pass ASTM D 2137, Method A Temperature: -13 F 2 (-25 C 1) Time: 10 minutes 0.53.2.6 Weathering The product shall show no evi
19、dence of cracking when tested in accordance with ASTM D 1149 for seven days at 104 F 2 (40 C 1). Test specimens shall be prepared and mounted in accordance with ASTM D 518, Method B. 3.2.7 Corrosion The product shall not have a corrosive effect on other materials when exposed to conditions normally
20、encountered in service, determined by a procedure agreed upon by purchaser and vendor. Discoloration of metal shall not be considered objectionable.3.3 Quality The product, as received by purchaser, shall be uniform in quality and condition, smooth, as free from foreign materials as commercially pra
21、cticable, and free from imperfections detrimental to usage of the product. 3.4 Tolerances Shall conform to all applicable requirements of AMS2279. SAE AMS3239F - 4 -4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors tests
22、and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Tests for requirements
23、 shown in Table 2 are acceptance tests and shall be performed on each lot. TABLE 2 - ACCEPTANCE TESTS Requirements Paragraph Reference Hardness, as received 3.2.1.1 Tensile Strength, as received 3.2.1.2 Elongation, as received 3.2.1.3 Volume Change in oil 3.2.2.4 Compression Set 3.2.4 4.2.2 Preprodu
24、ction Tests All technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of the product to a purchaser, when a change in ingredients and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 S
25、ampling and Testing Shall be as follows: 4.3.1 For Acceptance Tests Sufficient product shall be taken at random from each lot to perform all required tests. The number of determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less
26、 than three. 4.3.1.1 If specimens cannot be prepared from the product, ASTM test specimens prepared from the same batch and state of cure shall be used. When the product supplied is an extrusion of such shape that suitable test specimens cannot be cut from the product, a separate flat strip test sam
27、ple from the same production lot shall be supplied upon request. This strip shall be prepared from tubing 1.000 inch 0.063 (25.40 mm 1.60) in OD by 0.075 inch 0.008 (1.90 mm 0.20) in wall thickness, mechanically slit and flattened into a strip while being extruded, and cured in the same manner as pr
28、oduction product. When the product is a molded shape from which test specimens cannot be cut, a slab 6 inches (152 mm) square by 0.075 inch 0.008 (1.90 mm 0.20) molded from the same batch of compound shall be supplied upon request. 4.3.1.2 A lot shall be all product from the same batch of compound p
29、rocessed in one continuous run and presented for vendors inspection at one time. 4.3.1.3 A batch shall be the quantity of compound run through a mill or mixer at one time. 4.3.1.4 When a statistical sampling plan has been agreed upon by purchaser and vendor, sampling shall be in accordance with such
30、 plan in lieu of sampling as in 4.3.1 and the report of 4.5 shall state that such plan was used.SAE AMS3239F - 5 -4.3.2 For Preproduction Tests As agreed upon by purchaser and vendor. 4.4 Approval 4.4.1 Sample product shall be approved by purchaser before product for production use is supplied, unle
31、ss such approval be waived by purchaser. Results of tests on production product shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as
32、those used on the approved sample product. If necessary to make any change in ingredients, in type of equipment for processing, or in manufacturing procedures, vendor shall submit for reapproval a statement of the proposed changes in ingredients and/or processing and, when requested, sample product.
33、 Production product made by the revised procedure shall not be shipped prior to receipt of reapproval.4.5 Reports The vendor of the product shall furnish with each shipment a report showing the results of tests to determine conformance to the acceptance test requirements and stating that the product
34、 conforms to the other technical requirements. This report shall include the purchase order number, lot number, AMS3239F, vendors compound number, form and size or part number, and quantity. 4.6 Resampling and Retesting If any specimen used in the above tests fails to meet the specified requirements
35、, disposition of the product may be based on the results of testing three additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the product represented. Results of all tests shall be reported.
36、5. PREPARATION FOR DELIVERY 5.1 Identification and Packaging Shall be in accordance with AMS2810. 5.1.1 A lot of product may be packaged in small quantities and delivered under the basic lot approval provided lot identification is maintained. 6. ACKNOWLEDGMENT A vendor shall mention this specificati
37、on number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) located in the left margin is for the conve
38、nience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of a document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revision. Change bars and (R) are not used in
39、original publications, nor in documents that contain editorial changes only. SAE AMS3239F - 6 -8.2 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of
40、 the primary units and are presented only for information. 8.3 Purchase documents should specify not less than the following: AMS3239FForm and size or part number of product desired Quantity of product desired Acceptance standards and test method for corrosion (See 3.2.7). PREPARED BY AMS COMMITTEE “CE“
