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/AMS3201L AEROSPACE MATERIAL SPECIFICATION AMS3201L Issued 1942-12 Revised 2009-05 Superseding AM
5、S3201K Butadiene Acrylonitrile (NBR) Rubber Dry Heat Resistant 35 - 45 RATIONALE AMS3201L results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. 1.2 Appli
6、cation These products have been typically used for parts, such as packings, bushings, grommets, and applications requiring resistance to dry heat, but usage is not limited to such applications. Each application should be considered individually. 1.3 Safety - Hazardous Materials While the materials,
7、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 familiarity with the safe and proper u
8、se 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 may work to a subsequent revision unl
9、ess 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, Warrendale, PA 15096-0001, Tel: 877-606-7323
10、 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2279 Tolerances, Rubber Products AMS 2810 Identification and Packaging, Elastomeric Products SAE AMS3201L Page 2 of 6 2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohoc
11、ken, 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 518 Rubber Deterioration - Surfac
12、e Cracking ASTM D 792 Rubber Property - Specific Gravity ASTM D 865 Rubber Property - Deterioration by Heating in Air (Test Tube Enclosure) ASTM D 1149 Rubber Property Deterioration - Surface Ozone Cracking in a Chamber (Flat Specimens) ASTM D 2137 Rubber Property - Brittleness Point of Flexible Pol
13、ymers and Coated Fabrics ASTM D 2240 Rubber Property - Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on an acrylonitrile-butadiene (NBR) elastomer, suitably cured to produce a product meeting the requirements of 3.2. 3.2 Properties The product shall conform to
14、the following requirements shown in Table 1; 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 Hardness, Durometer “A” or equivalent 40 5 ASTM D 2240 3.2.2 Tensile Streng
15、th, min ASTM D 412, Die B or C 3.2.2.1 For parts other than extrusions 1000 psi (6.90 Mpa) 3.2.2.2 For extruded parts 800 psi (5.52 MPa) 3.2.3 Elongation, min 300% 3.2.4 Specific Gravity Preproduction Value 0.02 ASTM D 792 (Hydrostatic Method) 3.2.5 Oil Resistance ASTM D 471 Medium: IRM 903 oil Temp
16、erature: 212 F 2 (100 C 1) 3.2.5.1 Hardness Change, Durometer “A” or equivalent -15 to +10 Time: 70 hours 0.5 3.2.5.2 Tensile Strength Change, max -50% 3.2.5.3 Elongation Change, max -40% 3.2.5.4 Volume Change -10 to +50% 3.2.5.5 Decomposition None 3.2.5.6 Surface Tackiness None 3.2.6 Dry Heat Resis
17、tance ASTM D 865 Temperature: 302 F 5 (150 C 3) 3.2.6.1 Hardness Change, Durometer “A” or equivalent 0 to +20 Time: 70 hours 0.5 SAE AMS3201L Page 3 of 6 TABLE 1 PROPERTIES (CONTINUED) Property Requirement Test Method 3.2.6.2 Tensile Strength Change, max 3.2.6.2.1 For parts other than extrusions -60
18、% 3.2.6.2.2 For extruded parts -70% 3.2.6.3 Elongation Change, max 3.2.6.3.1 For parts other than extrusions 70% 3.2.6.3.2 For extruded parts -85% 3.2.6.3.3 Bend (flat) No cracking or checking 3.2.7 Compression Set Percent of Original Deflection, max 75 ASTM D 395, Method B Temperature: 212 F 2 (100
19、 C 1) Time: 70 hours 0.5 3.2.8 Low-Temperature Resistance 3.2.8.1 Brittleness Pass ASTM D 2137, Method A Temperature: -40 F 1 (-40 C 2) 3.3 Dimensions and Tolerances Dimensions and tolerances shall be as specified in the parts standard, drawing or purchase document. If not specified, shall conform t
20、o all applicable requirements of AMS2279 . 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 manufacturers instructions and with appropriate handling procedures. 4. QUALITY ASSURANCE PROVISIONS 4
21、.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. 4.2 Classification of Tests 4.2.1
22、Acceptance Tests Requirements shown in Table 2 are acceptance tests and shall be performed on each lot: TABLE 2 - ACCEPTANCE TEST REQUIREMENTS Requirement Paragraph Hardness, as received 3.2.1 Tensile Strength, as received 3.2.2 Elongation, as received 3.2.3 Specific Gravity 3.2.4 Volume Change in o
23、il 3.2.5.4 Compression Set 3.2.7 4.2.1.1 Lot: A quantity of one size of product processed 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. SAE AMS3201L Page 4 of 6 4.2.1.3 Random Sampling The method shall be as specified in the pa
24、rts standard, drawing or purchase document. If not specified, product shall be taken at random from each lot to perform all the required acceptance tests. The number of test iterations for each requirement shall be specified in the applicable test procedure. 4.2.2 Preproduction Tests All technical r
25、equirements are preproduction tests and shall be performed prior to the initial shipment of the product by the manufacturer, 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 Testing Shall be
26、 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 than three, except as speci
27、fied in 4.3.1.1. 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
28、 sample 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 a
29、s production 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) thick molded from the same batch of compound shall be supplied upon request. 4.3.1.2 A statistical sampling plan acceptable to the purc
30、haser may be used in lieu of sampling as in 4.3.1. Sample size for visual and dimensional requirements shall be as shown in Table 3; sample unit shall be one molded part and acceptable based on zero defects. 4.3.2 For Preproduction Tests Acceptable to purchaser or as stated in the contract. 4.4 Appr
31、oval 4.4.1 Sample product shall be approved by the purchaser before product for production 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 the revi
32、sed procedure shall not be shipped prior to receipt of reapproval. If necessary to make 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 Ma
33、nufacturer 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. SAE AMS3201L Page 5 of 6 4.4.2.1 Control factors for producing products include, but are not limited to, the fol
34、lowing: 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 procedure (compression, transfer, injection) Curing time and pressure; variations of 10% are permi
35、ssible Finishing methods Methods of inspection 4.4.2.2 Any of the above process control factors for which parameters are considered proprietary by the manufacturer may be assigned a code designation. Each variation in such parameters shall be assigned a modified code designation. 4.5 Reports The sup
36、plier of the product shall make readily available a report showing the results of tests to determine conformance to the acceptance requirements and stating that the product conforms to the other technical requirements. This report shall include AMS number and its revision letter, manufacturers ident
37、ification and product designation, batch/lot number and date of manufacture. For products requiring source inspection, reports shall be stamped by the third party source inspector. 4.6 Resampling and Retesting If any specimen fails, a retesting of three additional specimens for each nonconforming sp
38、ecimen shall be necessary for product acceptance. Whenever possible the same batch/lot of product as was used for the 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 Packagin
39、g and Identification Shall be as specified in the parts standard, drawing or purchase document. If not specified, shall 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 maint
40、ained. 5.1.1 Each package, box, and shipping container shall be permanently and legibly marked with the following when pertinent: Specification number AMS number and its revision letter, class, grade, and type Manufacturers identification Manufacturers product designation Batch/lot number Date of ma
41、nufacturing/packaging Shelf life expiration date Storage conditions 6. ACKNOWLEDGMENT A supplier shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications a
42、uthorized by purchaser, will be subject to rejection. SAE AMS3201L Page 6 of 6 8. NOTES 8.1 A change bar (|) located in the left margin 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) sy
43、mbol 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 original publications, nor in documents that contain editorial changes only. 8.2 Dimensions and properties in inch/pound units and the Fahrenheit te
44、mperatures 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 Purchase orders should specify not less than the following: AMS3201L Quantity of parts desired Method of test and acceptance standards for corrosion (See 3.2.7) Special packaging, if required 8.4 IRM 903, is available from Calumet Lubricant Company, Indianapolis, IN 317-328-5660. PREPARED BY AMS COMMITTEE “CE”
