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 therefr
2、om, 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 2008 SAE International All rights reserved. No part of this publication may
3、 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) F
4、ax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgAMS 3200K AEROSPACEMATERIALSPECIFICATIONIssued 1942-12 Revised 2008-06 Superseding AMS 3200J Butadiene Acrylonitrile (NBR) Rubber Petroleum-Base Hydraulic Fluid Resistant 55 - 65 RATIONALEAMS 3200K results from a Five Y
5、ear 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 Application These products have been typically used as seals and gaskets, in contact with petroleum-base hydraulic f
6、luids but usage is not limited to such applications. Each application should be considered individually. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specifica
7、tion 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 ensure the health and safety of all personnel involved. 2. APPL
8、ICABLE DOCUMENTS The 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 specific document issue is specified. When the referenced documen
9、t has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA
10、), www.sae.org. AMS 2279 Tolerances, Rubber Products AMS 2810 Identification and Packaging, Elastomeric Products SAE AMS 3200K - 2 -2.2 ASTM Publications Available 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
11、 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 Property - Deterioration - Surface Cracking ASTM D 573 Rubber Property - Deterioration in an Air Oven ASTM D 792 Rubber Property
12、 - Specific Gravity ASTM D 1149 Rubber Property - Deterioration - Surface Ozone Cracking in a Chamber (Flat Specimens) ASTM D 2137 Rubber Property - Brittleness Point of Flexible Polymers and Coated Fabrics ASTM D 2240 Rubber Property - Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall
13、 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 the following requirements in Table 1; tests shall be performed on the product supplied and in accordance with specifi
14、ed ASTM methods, insofar as practicable: TABLE 1 - PROPERTIES Property Requirement Test Method 3.2.1 Hardness, Durometer “A” or equivalent 60 5 ASTM D 2240 3.2.2 Tensile Strength, min 1400 psi (9.65 MPa) ASTM D 412, Die B or C 3.2.3 Elongation, min ASTM D 412, Die B or C 3.2.3.1 For parts other than
15、 extrusions 250% 3.2.3.2 For extruded parts 80% of Preproduction Value3.2.4 Specific Gravity Preprocessing Value 0.02 ASTM D 792 (Hydrostatic Method) 3.2.5 Oil Resistance ASTM D 471 IRM 903 oil (See 8.3) 212 F 2 (100 C 1) 3.2.5.1 Hardness Change, Durometer “A” or equivalent -15 to +5 70 hours 0.5 3.
16、2.5.2 Tensile Strength Change, max -30% 3.2.5.3 Elongation Change, max -30% 3.2.5.4 Volume Change 0 to +25% 3.2.5.5 Decomposition None 3.2.5.6 Surface Tackiness None 3.2.6 Dry Heat Resistance ASTM D 573 212 F 2 (100 C 1) 3.2.6.1 Hardness Change, Durometer “A” or equivalent 0 to +15 70 hours 0.5 SAE
17、AMS 3200K - 3 -TABLE 1 - PROPERTIES (CONT.) Property Requirement Test Method 3.2.6.2 Tensile Strength Change, max -10% 3.2.6.3 Elongation Change, max -45% 3.2.6.4 Bend (flat) No cracking or checking 3.2.7 Compression Set Percent of Original Deflection, max 70ASTM D 395 Method B 212 F 2 (100 C 1) 70
18、hours 0.5 3.2.8 Low-Temperature Resistance 3.2.8.1 Brittleness Pass ASTM D 2137 Method A -31 F 2 (-35 C 1) 3.2.9 Weathering The product shall show no evidence of cracking when tested in accordance with ASTM D 1149 for 168 hours 0.5 at 104 F 2 (40 C 1). Test specimens shall be prepared and mounted in
19、 accordance with ASTM D 518, Method B. 3.2.10 Corrosion The product shall not have a corrosive effect on other materials when exposed to conditions normally encountered in service, determined by a procedure agreed upon by purchaser and supplier. Discoloration of metal shall not be considered objecti
20、onable. 3.3 Quality The product, as received by purchaser, shall be uniform in quality and condition, smooth, and free from foreign material as commercially practicable, and free from imperfections detrimental to usage of the product. 3.4 Dimensions and Tolerances Dimensions and tolerances shall be
21、as specified in the parts standard, drawing or purchase document. If not specified, shall conform to all applicable requirements of AMS 2279 . 3.5 Toxicological Formulations The material shall have no adverse effects on the health of personnel when used for its intended purpose in accordance with ma
22、nufacturers instructions and with appropriate handling procedures. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The manufacturer shall supply all samples and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any
23、 confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. SAE AMS 3200K - 4 -4.2 ClassificatIon of Tests 4.2.1 Acceptance Tests Requirements, shown in Table 2, are acceptance tests and shall be performed on each lot: TABLE 2 - ACCEPTANCE TEST REQUIREMENTS
24、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 oil 3.2.5.4 Compression Set 3.2.7 4.2.1.1 Lot A quantity of one size of product processed and packaged as one production entity from a batch 4.2
25、.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 to perform all the required acceptance tests. Th
26、e 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 prior to or on the initial shipment of the pro
27、duct by the manufacturer, when any 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 as follows. 4.3.1 For Acceptance Tests Sufficient product shall be taken at random from each lot
28、 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 specified in 4.3.1.2. 4.3.1.1 If specimens cannot be prepared from the product, ASTM test specimens pr
29、epared 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 the same production lot shall be supplied upon request. This strip shall be prepared
30、 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 product. When the product is a molded shape from which test specimens cannot be cut,
31、 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. SAE AMS 3200K - 5 -4.3.1.2 A statistical sampling plan acceptable to the purchaser may be used in lieu of sampling as in 4.3.1. Sample size for visual and
32、dimensional requirements shall be as shown in Table 3; sample unit shall be one molded part and acceptable based on zero defects. TABLE 3 - VISUAL AND DIMENSIONAL INSPECTION Lot Size Sample Size 2 to 8 Entire Lot 9 to 90 8 91 to 150 12 151 to 280 19 281 to 500 21 501 to 1200 27 1201 to 3200 35 3201
33、to 10,000 38 10,001 to 35,000 46 35,001 to 150,000 56 150,001 and Over 65 4.3.2 For Preproduction Tests Acceptable to purchaser. 4.4 Approval 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. Result
34、s of the tests on production product shall be essentially equivalent to those on the approved sample. Production product made by the revised procedure shall not be shipped prior to receipt of reapproval. If necessary to make any change in parameters for the process control factors, manufacturer shal
35、l submit for reapproval a statement of the proposed changes in ingredients and/or processing and when requested, sample product. 4.4.2 Manufacturer shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as those used
36、 on the approved sample. 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
37、Basic molding procedure (compression, transfer, injection) Curing time and pressure; variations of 10% are permissible 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 d
38、esignation. Each variation in such parameters shall be assigned a modified code designation.4.5 Reports The supplier 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
39、other technical requirements. This report shall include AMS3200K, manufacturers identification and product designation, batch/lot number and date of manufacture.SAE AMS 3200K - 6 -4.6 Resampling and Retesting If any specimen fails, a retesting of three additional specimens for each nonconforming spe
40、cimen 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 Packaging
41、 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 AMS 2810. A lot may be packaged in small quantities and delivered under the basic lot approval provided lot information is maint
42、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 with revision, class, grade, and type Manufacturers identification Manufacturers product designation Batch/lot number Date of manufacturing
43、/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 authorized b
44、y purchaser, will be subject to rejection. 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 specification. An (R) symbol to the left of the documen
45、t title indicates a complete revision of the specification, including technical revision. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only. 8.2 Terms used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound
46、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. SAE AMS 3200K - 7 -8.4 Purchase orders should specify not less than the following: AMS 3200K Part number of product desired Quantity of product desired Special packaging, if required. 8.5 IRM 903, is available from Calumet Lubricant Company, Indianapolis, IN 317-328-5660.PREPARED BY AMS COMMITTEE “CE”
