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/AMS3226HAEROSPACEMATERIALSPECIFICATIONAMS3226 REV. HIssued 1942-12Reaffirmed 2003-11Revised 2014-03Supers
5、eding AMS3226GAcrylonitrile Butadiene (NBR) RubberHot Oil and Coolant Resistant, Low Swell45 - 55RATIONALEDocument was revised for the five year review.1. SCOPE1.1 FormThis specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.1.2 ApplicationP
6、rimarily for hose, packings, bushings, grommets, and seals in contact with hot, petroleum-base lubricating oils and glycol-type coolants typically from -40 to +212 F (-40 to +100 C).1.3 Safety - Hazardous MaterialsWhile the materials, methods, applications, and processes described or referenced in t
7、his 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 familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary
8、 measures to ensure the health and safety of all personnel involved.2. APPLICABLE DOCUMENTSThe 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
9、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 apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001
10、, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2279 Tolerances, Rubber ProductsAMS2810 Identification and Packaging, Elastomer ProductsSAE AMS3226H Page 2 of 62.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West
11、 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 TensionASTM D 471 Rubber Property - Effect of LiquidsASTM D 573 Rubber - Deterioration in an Air OvenASTM D 2137 Rub
12、ber Property - Brittleness Point of Flexible Polymers and Coated FabricsASTM D 2240 Rubber Property - Durometer Hardness3. TECHNICAL REQUIREMENTS3.1 MaterialShall be a black compound, based on an acrylonitrile-butadiene (NBR) elastomer, suitably cured to produce a product meeting the requirements of
13、 3.2.3.2 PropertiesThe product shall conform to the requirements in Table 1; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar as practicable:TABLE 13.2.1 As Received3.2.1.1 Hardness Durometer ASTM D 2240“A“ or equivalent 50 53.2.1.2 Tensile Stre
14、ngth, 1200 psi ASTM D 412, Die B or Cminimum (8.27 MPa)3.2.1.3 Elongation, minimum 350% ASTM D 412, Die B or C3.2.1.4 Specific Gravity Preproduction ASTM D 297Value 0.02SAE AMS3226H Page 3 of 6TABLE 1 (CONT.)3.2.2 Lubricating Oil Resistance ASTM D 471(Immediate Deteriorated Medium: IRM 901 OilProper
15、ties) Temperature: 302 F 5(150 C 3)3.2.2.1 Hardness Change, Time: 70 hours 0.5Durometer “A“ orequivalent -5 to + 153.2.2.2 Tensile StrengthChange, maximum -50%3.2.2.3 Elongation Change,maximum -50%3.2.2.4 Volume Change 0 to +10%3.2.2.5 Decomposition None3.2.2.6 Surface Tackiness None3.2.3 Processing
16、 Oil Resistance ASTM D 471(Immediate Deteriorated Medium: IRM 903 OilProperties) Temperature: 302 F 5(150 C 3)3.2.3.1 Hardness Change, Time: 70 hours 0.5Durometer “A“ orequivalent -20 to +53.2.3.2 Volume Change 0 to +50%3.2.3.3 Decomposition None3.2.3.4 Surface Tackiness None3.2.4 Coolant Resistance
17、 ASTM D 471(Immediate Deteriorated Medium: Ethylene Glycol 97%Properties) Water 3%Temperature: 302 F 53.2.4.1 Hardness Change, (150 C 3)Durometer “A“ or Time: 70 hours 0.5equivalent -15 to +153.2.4.2 Tensile StrengthChange, maximum -25%3.2.4.3 Elongation Change,maximum -60%3.2.4.4 Volume Change 0 to
18、 +25%3.2.4.5 Decomposition None3.2.4.6 Surface Tackiness NoneSAE AMS3226H Page 4 of 6TABLE 1 (CONT.)3.2.5 Dry Heat Resistance ASTM D 573Temperature: 212 F 23.2.5.1 Hardness Change, (100 C 1)Durometer “A“ or Time: 70 hours 0.5equivalent 0 to +103.2.5.2 Tensile StrengthChange, maximum -25%3.2.5.3 Elon
19、gation Change,maximum -50%3.2.6 Compression Set ASTM D 395, Method BTemperature: 257 F 43.2.6.1 Percent of Original (125 C 2)Deflection, maximum 50 Time: 70 hours 0.53.2.7 Low-Temperature Resistance ASTM D2137, Method ATemperature: -40 F 2(-40 C 1)3.2.7.1 Brittleness Pass Time: 5 minutes 0.23.2.8 We
20、atheringThe product shall have weather resistance acceptable to the purchaser, determined by a procedure agreed upon by purchaser and vendor.3.2.9 CorrosionThe product shall not have a corrosive effect on other materials when exposed to conditions normally encountered in service, determined by a pro
21、cedure agreed upon by purchaser and vendor. Discoloration of metal shall not be considered objectionable.3.3 QualityThe product, as received by purchaser, shall be uniform in quality and condition, smooth, as free from foreign material as commercially practicable, and free from imperfections detrime
22、ntal to usage of the product.3.4 TolerancesShall conform to all applicable requirements of AMS2279.4. 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. Purchase
23、r 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.SAE AMS3226H Page 5 of 64.2 Classification of Tests4.2.1 Acceptance TestsThe tests contained in Table 2 are acceptance tests and shall
24、 be performed on each lot:TABLE 2Property ParagraphHardness, as received 3.2.1.1Tensile Strength, as received 3.2.1.2Elongation, as received 3.2.1.3Volume Change in Processing Oil 3.2.3.2Compression Set 3.2.64.2.2 Preproduction TestsTests for all technical requirements are preproduction tests and sh
25、all 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 Sampling and TestingShall be as follows:4.3.1 For Acceptance TestsSuffi
26、cient 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.4.3.1.1 If test specimens cannot be prepared from the product
27、, 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 from the same production lot shall be supplied upon request. This strip sh
28、all be prepared from tubing 1.000 inch 0.063 (25 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 production product. When the product is a molded shape from which test specimens ca
29、nnot 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 processed in one continuous production run and presented for vendors inspection at
30、one time. An inspection lot shall not exceed 500 pounds (227 kg).4.3.1.3 A batch shall be the quantity of compound run through a mill or mixer at one time. Excluded from the definition is mixing of batches of previously compounded material.4.3.1.4 When a statistical sampling plan has been agreed upo
31、n by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.3.1 and the report of 4.5 shall state that such plan was used.4.3.2 For Preproduction Tests4.3.3 As agreed upon by purchaser and vendor.SAE AMS3226H Page 6 of 64.4 Approval4.4.1 Sample product shall
32、 be approved by purchaser before product for production use is supplied, unless 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 me
33、thods of inspection on production product which are essentially the same as 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 c
34、hanges in ingredients and/or processing and, when requested, sample product. Production product made by the revised procedure shall not be shipped prior to receipt of reapproval.4.5 ReportsThe vendor of the product shall furnish with each shipment a report showing the results of tests to determine c
35、onformance to the acceptance test requirements and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, lot number, AMS3226H, manufacturers identification, form and size or part number, and quantity.4.6 Resampling and RetestingIf
36、 any specimen 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
37、rejection of the product represented. Results of all tests shall be reported.5. PREPARATION FOR DELIVERY5.1 Identification and PackagingShall be in accordance with AMS2810.6. ACKNOWLEDGMENTA vendor shall mention this specification number and its revision letter in all quotations and when acknowledgi
38、ng purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editoria
39、l 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.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.PREPARED BY AMS COMMITTEE “CE“
