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/AMS3227HAEROSPACEMATERIALSPECIFICATIONAMS3227 REV. HIssued 1942-12Reaffirmed 2003-11Revised 2013-03Supers
5、edingAcrylonitrile Butadiene (NBR) RubberHot Oil and Coolant Resistant, Low Swell55 - 65RATIONALEDocument was revised for 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 ApplicationPrimarily for
6、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 this specifica
7、tion 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 measures to
8、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 unless a spec
9、ific 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, Tel: 877-60
10、6-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2279 Tolerances, Rubber ProductsAMS2810 Identification and Packaging, Elastomeric ProductsSAE AMS3227H Page 2 of 62.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohock
11、en, PA 19428-2959, Tel: 610-832-9585, www.astm.orgASTM 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 Rubber Property
12、 - Brittleness Point of Flexible Polymers and Coated FabricsASTM D 2240 Rubber Property - Durometer Hardness3. TECHNICAL REQUIREMENTS3.1 MaterialShall be a compound based on an acrylonitrile-butadiene (NBR) elastomer, suitably cured to produce a product meeting the requirements of 3.2.3.1.1 ColorSha
13、ll be black.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 60 53.2.1.2 Tens
14、ile Strength, minimum 1500 psi ASTM D 412, (10.3 MPa) Die B or C3.2.1.3 Elongation, minimum 300% ASTM D 412,Die B or C3.2.1.4 Specific Gravity Preproduction ASTM D297Value 0.02SAE AMS3227H Page 3 of 6TABLE 1 (CONT.)3.2.2 Lubricating Oil Resistance: ASTM D 471(Immediate Deteriorated Medium: IRM 901 O
15、ilProperties) Temperature: 302 g113F g114 5(150 C 3)3.2.2.1 Hardness Change, Time: 70 hours 0.5Durometer “A“ orequivalent -10 to +103.2.2.2 Tensile Strength Change,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 No
16、ne3.2.3 Processing 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 Elongation Change, maximum -75%3.2.3.3 Volume Change 0 to +45%3.2.3.4 Decomposition
17、None3.2.3.5 Surface Tackiness None3.2.4 Coolant Resistance: ASTM D 471(Immediate Deteriorated) Medium: Ethylene Properties) Glycol 97%,Water 3%3.2.4.1 Hardness Change, Temperature: 302 F 5Durometer “A“ or equivalent -15 to 15 (150 C 3)Time: 70 hours 0.53.2.4.2 Tensile Strength Change,maximum -25%3.2
18、.4.3 Elongation Change, maximum -60%3.2.4.4 Volume Change 0 to +25%3.2.4.5 Decomposition None3.2.4.6 Surface Tackiness NoneSAE AMS3227H 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 equivalent 0 to +10 Time: 70 h
19、ours 0.53.2.5.2 Tensile Strength Change,maximum -25%3.2.5.3 Elongation Change, maximum -40%3.2.6 Compression Set: ASTM D 395, Method B3.2.6.1 Percent of Original Temperature: 257 F 4Deflection, maximum 50 (125 C 2)Time: 70 hours 0.53.2.7 Low-Temperature Resistance: ASTM D 2137, Method A3.2.7.1 Britt
20、leness Pass Temperature: -40 F 2(-40 C 1)Time: 5 minutes 0.23.2.8 WeatheringThe product shall have weather resistance acceptable to purchaser, determined by a procedure agreed upon by purchaserand vendor.3.2.9 CorrosionThe product shall not have a corrosive effect on other materials when exposed to
21、conditions normally encountered in service, determined by a procedure 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 a
22、s commercially practicable, and free from imperfections detrimental 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 s
23、hall be responsible for performing all required tests. 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.SAE AMS3227H Page 5 of 64.2 Classification of Tests4.2.1 Acceptance Tes
24、tsThe tests contained inTable 2 are acceptance tests and shall 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 3.2.3.3Compression Set 3.2.64.2.2 Preproduction TestsTests
25、 for all technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of theproduct 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 a
26、nd TestingShall be as follows:4.3.1 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.
27、4.3.1.1 If test 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 sample from
28、 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 production
29、 material. 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) thick, 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
30、rocessed in one continuous production run and presented for vendors inspection at 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 previousl
31、y compounded material.4.3.1.4 When a statistical sampling plan has been agreed upon 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 TestsAs agreed upon by purchas
32、er and vendor.SAE AMS3227H Page 6 of 64.4 Approval4.4.1 Sample product shall 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
33、.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods 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
34、procedures, vendor shall submit for reapproval a statement of the proposed changes 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 fur
35、nish with each shipment a report showing the results of tests to determine conformance 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, AMS3227H, manufacturers identificatio
36、n number, form and size or part number, and quantity.4.6 Resampling and RetestingIf 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 noncon-forming specimen. F
37、ailure 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.5. PREPARATION FOR DELIVERY5.1 Identification and PackagingShall be in accordance with AMS2810.6. ACKNOWLEDGMENTA vendor shall mention this
38、 specification number and its revision letter in all quotations and when acknowledging 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 t
39、he convenience of 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
40、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“
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