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 theref
2、rom, 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 2012 SAE InternationalAll rights reserved. No part of this publication may b
3、e 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: +1 724-776-4970 (outside USA)Fax
4、: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3229JAEROSPACEMATERIALSPECIFICATIONAMS3229 REV. JIssued 1942-12Noncurrent 1991-04Reaf Nonc 2003-11Stab
5、ilized 2011-11Revised 2013-03Superseding AMS3229HAcrylonitrile Butadiene (NBR) RubberHot Oil Resistant, Low Swell75 - 85RATIONALEThis specification was updated to fix errors found in the testing requirements.1. SCOPE1.1 FormThis specification covers a nitrile (NBR) rubber in the form of sheet, strip
6、, tubing, extrusions, and molded shapes.1.2 ApplicationPrimarily for packings, bushings, and grommets in contact with hot, petroleum-base oils from -40 to +100 C (-40 to +212 F).2. APPLICABLE DOCUMENTSThe issue of the following documents in effect on the date of the purchase order forms a part of th
7、is specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless 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
8、 apply.SAE AMS3229J Page 2 of 72.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2350 Standards and Test MethodsAMS2810 Identification and Packaging, Elastom
9、eric Products2.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM D 297 Rubber Products - Chemical AnalysisASTM D 395 Rubber Property - Compression SetASTM D 412 Rubber Properties in Tensi
10、onASTM D 471 Rubber Property - Effect of LiquidsASTM D 573 Rubber Deterioration in an Air OvenASTM D 2137 Rubber Property - Brittleness Point of Flexible Polymers and Coated FabrcsASTM D 2240 Rubber Property - Durometer Hardness3. TECHNICAL REQUIREMENTS3.1 MaterialShall be a compound based on an acr
11、ylonitrile-butadiene elastomer, suitably cured to produce a product meeting the requirements of 3.2.3.1.1 ColorShall be black.3.2 PropertiesThe product shall conform to the following requirements; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar
12、 as practicable:SAE AMS3229J Page 3 of 7TABLE 13.2.1 As Received3.2.1.1 Hardness, Durometer “A” 80 5 ASTM D 2240or equiv.3.2.1.2 Tensile Strength, min 1000 psi ASTM D 412, Die B or C(6.90 MPa)3.2.1.3 Elongation, min 150% ASTM D 412, Die B or C3.2.1.4 Specific Gravity Preproduction ASTM D 297Value 0.
13、023.2.2 Lubricating Oil Resistance ASTM D 471(Immediate Deteriorated Medium: IRM 901 OilProperties) Temperature: 150 C 3(302 F 5)3.2.2.1 Hardness Change, Durometer -5 to +10 Time: 70 hours 0.5“A” or equiv.3.2.2.2 Volume Change 0 to +10%3.2.2.3 Decomposition None3.2.2.4 Surface Tackiness None3.2.2.5
14、Bend 90 degrees No crackingover radius 5 times or checkingspecimen thickness3.2.3 Processing Oil Resistance ASTM D 471(Immediate Deteriorated Medium: IRM 903 OilProperties) Temperature: 150 C 3(302 F 5)3.2.3.1 Hardness Change, Durometer -20 to +5 Time: 70 hours 0.5“A“ or equiv.3.2.3.2 Volume Change
15、0 to +45%3.2.3.3 Decomposition None3.2.3.4 Surface Tackiness None3.2.4 Compression Set ASTM D 395,Method B3.2.4.1 Percent of Original 50 Temperature: 125 C 1Deflection, max (257 F 2)Time: 70 hours 0.53.3 Low-Temperature Resistance ASTM D 2137,Method A3.3.1 Brittleness Pass Temperature: -40 C 1(-40 F
16、 2)Time: 5 hours 0.2SAE AMS3229J Page 4 of 73.3.2 WeatheringThe product, unless otherwise specified, shall have weather resistance acceptable to the purchaser, determined by a procedure agreed upon by purchaser and vendor.3.3.3 CorrosionThe product, unless otherwise specified, shall not have a corro
17、sive effect on other materials when exposed to conditions normally encountered in service, determined by a procedure agreed upon by purchaser and vendor. Discoloration of metal shall not be considered objectionable.3.4 QualityThe product as received by purchaser, shall be uniform in quality and cond
18、ition, clean, smooth, as free from foreign material as commercially practicable and free from imperfections detrimental to usage of the product.3.5 TolerancesUnless otherwise specified, the following tolerances shall apply:3.5.1 Sheet and StripTABLE 2Nominal Thickness (T)InchesTolerance, InchPlus an
19、d MinusFixed Closure (See 3.4.1.1)Up to 0.400, inclOver 0.400 to 0.630, inclOver 0.630 to 1.000, inclOver 1.000 to 1.600, inclOver 1.600 to 2.500, inclOver 2.500 to 4.000, inclOver 4.000 to 6.300, excl6.300 and over0.0080.0100.0130.0160.0200.0250.0320.005T0.0130.0160.0200.0250.0320.0400.050-TABLE 2
20、(SI)Nominal Thickness (T)MillimetersTolerance, MillimetersPlus and MinusFixed Closure (See 3.4.1.1)Up to 10.00, inclOver 10.00 to 16.00, inclOver 16.00 to 25.00, inclOver 25.00 to 40.00, inclOver 40.00 to 63.00, inclOver 63.00 to 100.00, inclOver 100.00 to 160.00, excl160.00 and over0.200.250.320.40
21、0.500.630.800.05T0.320.400.500.630.801.001.25-3.5.1.1 Closure dimensions are across mold parting line.SAE AMS3229J Page 5 of 73.5.2 Tubing Diameter and Wall ThicknessTABLE 3Nominal OD or ID (D) (not both)and Wall ThicknessInchesTolerance, InchPlus and MinusOvality, %(See 3.4.2.2)Up to 0.100, incl (S
22、ee 3.4.2.1)Over 0.100 to 0.160, inclOver 0.160 to 0.250, inclOver 0.250 to 0.400, inclOver 0.400 to 0.630, inclOver 0.630 to 1.000, inclOver 1.0000.0130.0160.0200.0250.0320.0400.0350XD10151515151515TABLE 3 (SI)Nominal OD or ID (D) (not both)and Wall ThicknessMillimetersTolerance,MillimetersPlus and
23、MinusOvality, %(See 3.4.2.2)Up to 2.50, incl (See 3.4.2.1)Over 2.50 to 4.00, inclOver 4.00 to 6.30, inclOver 6.30 to 10.00, inclOver 10.00 to 16.00, inclOver 16.00 to 25.00, inclOver 25.000.320.400.500.630.801.000.350XD101515151515153.5.2.1 In general, cross-sectional dimensions less than 0.040 inch
24、 (1.00 mm) are impractical to extrude.3.5.2.2 Ovality applies to tubing ordered in straight-lengths with wall thickness of 0.063 inch (1.60 mm) and over, and shall be computed from the difference between the minor and major axis diameter measurements, taken at the same transverse plane on the tube,
25、expressed as a percentage of the nominal diameter.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the product shall supply all samples for vendors tests and shall be responsible for performing all required tests. Results of such tests shall be reported to the purchaser
26、as required by 4.5. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to the requirements of this specification.4.2 Classification of Tests4.2.1 Acceptance TestsTests to determine conformance to the following requireme
27、nts are classified as acceptance tests and shall be performed on each lot:SAE AMS3229J Page 6 of 7TABLE 4Property ParagraphHardness as receivedTensile Strength, as receivedElongation, as receivedVolume Change in Processing OilCompression Set3.2.1.13.2.1.23.2.1.33.2.3.23.2.4.14.2.2 Preproduction Test
28、sTests to determine conformance to all technical requirements of this specification are classified as preproduction tests and shall be performed prior to or on the initial shipment of the product to a purchaser, when a change in material or processing, or both, requires reapproval as in 4.4.2, and w
29、hen purchaser deems confirmatory testing to be required.4.2.2.1 For direct U.S. Military procurement, substantiating test data and, when requested preproduction test material shall be submitted to the cognizant agency as directed by the procuring activity, the contracting officer, or the request for
30、 procurement.4.3 Sampling4.3.1 For Acceptance TestsSufficient 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 than three. Ifte
31、st 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 is an extrusion of such shape that suitable test specimens cannot be cut from the product, a separate flat strip test sample shall be supplied upon req
32、uest. This strip shall be prepared from tubing 1.000 inch 0.063 (25 mm 1.60) in OD by 0.080 inch 0.008 (2.00 mm 0.20) in wall thickness, mechanically split and flattened into a strip while being extruded, and cured in the same manner as production material. When the product is a molded shape from wh
33、ich test specimens cannot be cut, a slab 6 x 6 x 0.075 inch (150 x 150 x 2 mm) molded from the same batch of compound shall be supplied upon request.4.3.1.1 A lot shall be all product from the same batch of compound processed in one continuous run and presented for vendors inspection at one time. An
34、 inspection lot shall not exceed 500 pounds (225 kg).4.3.1.2 A batch shall be the quantity of compound run through a mill or mixer at one time.4.3.1.3 When a statistical sampling plan and acceptance quality level (AQL) have been agreed upon by purchaser and vendor, sampling shall be in accordance wi
35、th such plan in lieu of sampling as in 4.3.1 and the report of 4.5.1 shall state that such plan was used.4.3.2 For Preproduction TestsAs agreed upon by purchaser and vendor.4.4 Approval4.4.1 Sample material shall be approved by purchaser before material for production use is supplied, unless such ap
36、proval be waived by purchaser. Results of tests on production material shall be essentially equivalent to those on the approved sample.SAE AMS3229J Page 7 of 74.4.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods of inspection on production material which are essential
37、ly the same as those used on the approved sample material. 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 material or processing, or both, and, when request
38、ed, sample material. Production material made by the revised procedure shall not be shipped prior to receipt of reapproval.4.5 Reports4.5.1 The vendor of the product shall furnish with each shipment three copies of a report showing the results of tests to determine conformance to the acceptance test
39、 requirements and stating that the product conforms to the other technical requirements of this specification, This report shall include the purchase order number, lot number, AMS3229J, vendors compound number, form or part number, and quantity.4.5.2 The vendor of finished or semi-finished parts sha
40、ll furnish with each shipment three copies of a report showing the purchase order number, AMS3229J, contractor or other direct supplier of material, suppliers compound number, part number, and quantity. When material for making parts is produced or purchased by the parts vendor, that vendor shall in
41、spect each lot of material to determine conformance to the requirements of this specification and shall include in the report either a statement that the material conforms or copies of laboratory reports showing the results of tests to determine conformance.4.6 Resampling and RetestingIf any specime
42、n used in the above tests fails to meet the specified requirements, 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
43、 the product represented and no additional testing shall be permitted. Results of all tests shall be reported.5. PREPARATION FOR DELIVERY5.1 Identification and PackagingThe product shall be identified and packaged in accordance with AMS2810.6. ACKNOWLEDGMENTA vendor shall mention this specification
44、number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSMaterial not conforming to this specification or to modifications authorized by purchaser will be subject to rejection.8. NOTES8.1 A change bar (l) located in the left margin is for the convenience o
45、f the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.PREPARED BY AMS COMMITTEE “CE“
