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 there
2、from, 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 2009 SAE International All rights reserved. No part of this publication m
3、ay 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)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3275C AEROSPACE MATERIAL SPECIFICATION AMS3275C Issued 1989-10 Revised 2009-05 Superseding AM
5、S3275B Sheet, Acrylonitrile Butadiene (NBR) Rubber and Non-Asbestos Fiber Fuel and Oil Resistant RATIONALE AMS3275C results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a compressed non-asbestos fiber and acrylonitrile butadiene (NBR) rubber i
6、n the form of sheet. 1.2 Application This sheet has been used typically for gaskets, sealing between metal surfaces, in contact with fuels or with lubricating oil up to 302 F (150 C), but usage is not limited to such applications. Each application should be considered individually. 1.3 Safety - Haza
7、rdous Materials While the materials, methods, applications, and processes described or referenced in this specification 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 f
8、amiliarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS 2.1 The purchase order date shall stipulate the published document that shall be in effect. The supplier
9、may work to a subsequent revision unless a particular revision is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published revision shall apply 2.2 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrenda
10、le, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2810 Identification and Packaging, Elastomeric Products SAE AMS3275C Page 2 of 6 2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocke
11、n, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 573 Rubber-Deterioration in an Air Oven ASTM F 36 Compressibility and Recovery of Gasket Materials ASTM F 146 Fluid Resistance of Gasket Materials ASTM F 152 Tension Testing of Nonmetallic Gasket Materials 3. TECHNICAL REQUIREMENTS 3.1 Materi
12、als and Fabrication Shall be composed of non-asbestos fibers, inorganic fillers, and acrylonitrile-butadiene (NBR) rubber bonded and felted together under pressure into a pliable, resilient product. 3.2 Properties The product shall conform to the requirements shown in Table 1, 3.2.6, 3.2.7, and 3.2.
13、8; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar as practicable. TABLE 1 - PROPERTIES Property Requirement Test Method 3.2.1 Tensile Strength, min 1800 psi (12.4 MPa) ASTM F 152, Method A 3.2.2 Compressibility 7 to 17% ASTM F 36, Procedure A
14、3.2.3 Aromatic Fuel Resistance (Immediate Deteriorated Properties) ASTM F 146 ASTM Ref. Fuel B Temperature: 68 to 86 F (20 to 30 C) Time: 5 hours 0.25 3.2.3.1 Tensile Strength Change, max -50% 3.2.3.2 Thickness Change 0 to +10% 3.2.3.3 Weight Change, max +15% 3.2.3.4 Compressibility, max 30% 3.2.4 P
15、etroleum Hydraulic Oil Resistance ASTM F 146 IRM 903 (See 8.3) Temperature: 302 F 4 (150 C 2) Time: 5 hours 0.25 3.2.4.1 Tensile Strength Change, max -30% 3.2.4.2 Thickness Change 0 to +10% 3.2.4.3 Compressibility, max 30% 3.2.4.4 Bend No cracks 4.5.1 3.2.5 Dry Heat Resistance ASTM D 573 Temperature
16、: 212 F 4 (100 C 2) Time: 16 hours 0.25 3.2.5.1 Compressibility 5 to 20% 3.2.5.2 Bend No cracks 4.5.1 SAE AMS3275C Page 3 of 6 3.2.6 Delamination Sheet shall not delaminate, due to sticking, when removed from an assembly. 3.2.7 Weather Resistance The product shall show no evidence of cracking when t
17、ested in accordance with ASTM D 1149, Method B, Procedure B2 for seven days at 105 F 2 (40 C 1). The ozone pressure shall be 50+5 MPa. 3.3 Dimensions and Tolerances Dimensions and tolerances shall be as specified in the parts standard, drawing or purchase document. If not specified, shall be as show
18、n in Table 2. TABLE 2A - THICKNESS TOLERANCES, INCH/POUND UNITS Nominal Thickness Inch ToleranceInch Plus Tolerance Inch Minus Up to 0.0156, incl 0.005 0.002 Over 0.0156 to 0.0625, excl 0.005 0.005 0.0625 and over 0.008 0.008 TABLE 2B - THICKNESS TOLERANCES, SI UNITS Nominal Thickness Millimeters To
19、leranceMillimeterPlus Tolerance Millimeter Minus Up to 0.396, incl 0.13 0.05 Over 0.396 to 1.588, excl 0.13 0.13 1.588 and over 0.20 0.20 3.4 Toxicological Formulations The material shall have no adverse effects on the health of personnel when used for its intended purpose in accordance with manufac
20、turers instructions and with appropriate handling procedures. 3.5 Quality Sheet, as received by purchaser, shall be uniform in quality and condition, smooth, as free from foreign material as commercially practicable, and free from imperfections detrimental to usage of the sheet. 4. QUALITY ASSURANCE
21、 PROVISIONS 4.1 Responsibility for Inspection The manufacturer of the product shall be responsible for performance of all required tests. Purchaser reserves the right to sample and perform any testing deemed necessary to ensure that the product conforms to the AMS requirements. SAE AMS3275C Page 4 o
22、f 6 4.2 Classification of Tests 4.2.1 Acceptance Tests Each lot of product shall conform to Table 3 TABLE 3 ACCEPTANCE TESTS Requirement Paragraph Reference Tensile Strength 3.2.1 Compressibility 3.2.2 Thickness change after fuel immersion 3.2.3.2 4.2.1.1 Lot: A quantity of one size of product proce
23、ssed as one production entity from a batch 4.2.1.2 Batch: The quantity of compound run through a mill or mixer at one time. 4.2.1.3 Random Sampling The method shall be as specified in the parts standard, drawing or purchase document. If not specified, product shall be taken at random from each lot t
24、o perform all the required acceptance tests. The number of test iterations for each requirement shall be specified in the applicable test procedure. 4.2.1.4 Sample shall be from a production batch/lot 4.2.2 Preproduction Tests All technical requirements are preproduction tests and shall be performed
25、 prior to or on the first-article shipment of sheet by the manufacturer, when a change in ingredients and/or processing requires reapproval as in 4.4.1, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing 4.3.1 For Acceptance Tests Sufficient sheet shall be taken a
26、t 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 than three. 4.4 APPROVAL 4.4.1 Sample product shall be approved by purchaser before product for produc
27、tion use is supplied, unless such approval is waived by the purchaser. Results of the tests on production product shall be essentially equivalent to those on the approved sample. Production product made by a revised procedure shall not be shipped prior to receipt of reapproval. If necessary to make
28、any change in parameters for the process control factors, manufacturer shall submit for reapproval a statement of the proposed changes in ingredients and/or processing and, when requested, sample product. 4.4.2 Manufacturer of the product shall make no significant change in material, processes, or c
29、ontrol factors from those on which the approval was based, unless the change is approved by the cognizant engineering organization. A significant change is one which, in the judgment of the cognizant engineering organization, could affect the properties or performance of the product. SAE AMS3275C Pa
30、ge 5 of 6 4.4.2.1 Control factors for producing products include, but are not limited to, the following: Compound ingredients and proportions thereof within established limits Sequence of mixing compound ingredients Type of mixing equipment Method and equipment for preparing preforms Basic molding p
31、rocedure (compression, transfer, injection) Curing time and pressure; variations of 10% are permissible Finishing methods Methods of inspection. 4.5 Test Methods 4.5.1 Bend Bend sample 180 degrees around a diameter equal to either 12T for nominal thicknesses under 0.0625 inch (1.588 mm) or 16T for n
32、ominal thicknesses 0.0625 inch (1.588 mm) and over. 4.6 Reports The supplier of sheet shall furnish with each shipment a report from the manufacturer showing the results of tests to determine conformance to the acceptance test requirements and stating that the sheet conforms to the other technical r
33、equirements. This report shall include the purchase order number, lot number, AMS3275C. 4.7 Resampling and Retesting If any specimen fails, a retesting of three additional specimens for each nonconforming specimen shall be necessary for product acceptance. The same batch/lot of product used for the
34、failed test shall be used for retesting. Failure of any retest specimen shall be cause for rejection. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Packaging and Identification Shall be as specified in the parts standard, drawing or purchase document. If not specified, shal
35、l be as follows: Packaging shall be in accordance with AMS2810. A lot may be packaged in small quantities and delivered under the basic lot approval provided lot information in maintained. 5.1.1 Each package, box, and shipping container shall be permanently and legibly marked with the following when
36、 pertinent: Specification number AMS number with revision, class, grade, and type Manufacturers identification Manufacturers product designation Batch/lot number Date of manufacturing/packaging Shelf life expiration date Storage conditions 6. ACKNOWLEDGMENT Supplier shall mention this specification
37、number and its revision letter in all quotations and when acknowledging purchase orders. SAE AMS3275C Page 6 of 6 7. REJECTIONS Sheet 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 mar
38、gin is for the convenience 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
39、(R) are not used in original publications, nor in documents that contain editorial changes only. 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 the primary units and are presented only for information. 8.3 IRM 903 is available from Calumet Lubricant Company, Indianapolis, IN, telephone (317) 328-5660. PREPARED BY AMS COMMITTEE “CE”
