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 2010 SAE International All rights reserved. No part of this publication ma
3、y 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: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3331BAEROSPACEMATERIALSPECIFICATIONAMS3331 REV. B Issued 1984-07 Reaffirmed 2001-02 Revised
5、2010-05 Superseding AMS3331A Fluorosilicone (FVMQ) Rubber Fuel and Oil Resistant 65 - 75 RATIONALEAMS3331B is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded sh
6、apes.1.2 Application These products have been used typically for parts requiring resistance to jet fuel and lubricating oils, but usage is not limited to such applications. Generally, products are usable over a temperature range of -76 to +302 F (-60 to +150 C). Each application, however, has to be
7、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 specification does not address the hazards which may be involved in such use. It is the sol
8、e 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. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the
9、 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 document has been cancelled and no superseding document has been specified, the last publ
10、ished issue of that document shall apply. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3331B Page 2 of 72.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warren
11、dale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2279 Tolerances, Rubber Products AMS2810 Identification and Packaging, Elastomeric Products AMS3021 Fluid, Reference, for Testing Di-Ester (Polyol) Resistant Materials 2.2 ASTM Publications A
12、vailable 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 Standard Test Methods for Rubber Products Chemical Analysis ASTM D 395 Standard Test Methods for Rubber Property Compression Set ASTM D 412 Standard Te
13、st Methods for Vulcanized Rubber and Thermoplastic Elastomers - TensionASTM D 471 Standard Test Methods for Rubber Property Effect of Liquids ASTM D 573 Standard Test Methods for Rubber Deterioration in an Air Oven ASTM D 624 Rubber Property Tear Resistance ASTM D 1329 Rubber Property Retraction at
14、Low Temperatures (TR Test) ASTM D 1415 Standard Test Methods for Rubber Property - International Hardness ASTM D 2240 Standard Test Methods for Rubber Property Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on a fluorosilicone (FVMQ) elastomer, suitably cured to
15、 produce a product meeting the requirements of 3.2. 3.1.1 Color Shall be blue. 3.2 Properties The product shall conform to requirements shown in Table 1; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar as practicable. Copyright SAE Internationa
16、l Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3331B Page 3 of 7TABLE 1 - PROPERTIESParagraph Property Requirement Test Method 3.2.1 Hardness, Durometer “A” or equivalent 70 5 ASTM D 2240 or ASTM D 1415 3.2.2 Tensile
17、Strength, minimum 1150 psi (7.93 MPa) ASTM D 412, Die B or C 3.2.3 Elongation, minimum 150% ASTM D 412, Die B or C 3.2.4 Tear Resistance, minimum 75 pounds force per inch (13.1 kN/m) ASTM D 624, Die C 3.2.5 Specific Gravity Preproduction Value 0.03 ASTM D 297 3.2.6 Di-Ester Oil Resistance (Immediate
18、 Deteriorated Properties)ASTM D 471 AMS3021Temperature: 302 F 5 (150 C 3) Time: 70 hours 0.53.2.6.1 Hardness Change, Durometer “A” or equivalent -15 to +15 3.2.6.2 Tensile Strength Change, maximum -40%3.2.6.3 Elongation Change, maximum -25% 3.2.6.4 Volume Change +1 to +15% 3.2.7 Aromatic Fuel Resist
19、ance (Immediate Deteriorated Properties)ASTM D 471 ASTM Ref. Fuel B Temperature: 68 to 86 F (20 to 30 C)Time: 22 hours 0.53.2.7.1 Hardness Change, Durometer “A” or equivalent, maximum -203.2.7.2 Tensile Strength Change, maximum -45%3.2.7.3 Elongation Change, maximum -35% 3.2.7.4 Volume Change +1 to
20、+25% 3.2.8 Dry Heat Resistance ASTM D 573 Temperature: 392 F 5 (200 C 3) Time: 70 hours 0.53.2.8.1 Hardness Change, Durometer “A” or equivalent -5 to +10 3.2.8.2 Tensile Strength Change, maximum -20%3.2.8.3 Elongation Change, maximum -25% 3.2.9 Compression Set ASTM D 395, Method B Temperature: 347 F
21、 5 (175 C 3) Time: 22 hours 0.53.2.9.1 Percent of Original Deflection, maximum 253.2.10 Low-Temperature Resistance ASTM D 1329, Method A 3.2.10.1 Temperature Retraction, TR10point, maximum -71 F (-57 C) Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction o
22、r networking permitted without license from IHS-,-,-SAE AMS3331B Page 4 of 73.2.11 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
23、metal shall not be considered objectionable. 3.3 Quality The 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 detrimental to usage of the product. 3.4 Tolerances Shall conform
24、to all applicable requirements of AMS2279. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The manufacturer of the product shall supply all samples for required tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to p
25、erform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Tests for requirements shown in Table 2 are acceptance tests and shall be performed on each lot. TABLE 2 - ACCEPTANCE TESTS Requirement P
26、aragraph HardnessTensile Strength ElongationVolume Change in Fuel Compression Set Quality3.2.13.2.23.2.33.2.7.43.2.93.34.2.2 Preproduction Tests All technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of the product by the manufacturer, when a ch
27、ange in ingredients and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.2.2.1 Manufacturer shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as thos
28、e used on the approved sample. If necessary to make any change in ingredients, in type of equipment for processing, or in manufacturing procedures, manufacturer shall submit for reapproval a statement of the proposed changes in ingredients and/or processing, and, when requested, sample product. Prod
29、uction product made by the revised procedure shall not be shipped prior to receipt of reapproval. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3331B Page 5 of 74.3 Sampling and Testing Shal
30、l be 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. 4.3.1.1 If
31、specimens cannot be prepared from the product, ASTM test specimens prepared from the same batch and state of cure shall be used for required tests. 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,
32、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 as produ
33、ction 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 lot shall be all product from the same batch of compou
34、nd produced in one continuous run and presented for manufacturers inspection at one time. 4.3.1.3 A batch shall be the quantity of compound run through a mill or mixer at one time. 4.3.1.4 Final Inspection Sampling Plan A statistical sampling plan acceptable to the purchaser may be used in lieu of s
35、ampling 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 acceptance 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 28
36、1 to 500 21 501 to 1200 27 1201 to 3200 35 3201 to 10 000 38 10 001 to 35 000 46 35 001 to 150 000 56 150 001 and Over 65 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3331B Page 6 of 74.3.2
37、 For Preproduction Tests As agreed upon by purchaser and supplier. 4.4 Approval 4.4.1 Manufacturer shall establish for each size of part, parameters for the process control factors which will produce parts meeting the technical requirements of this specification. These shall constitute the approved
38、procedures and shall be used for manufacturing production of parts. If necessary to make any changes in the parameters for process control factors, manufacturer shall submit for reapproval a statement of the proposed changes in ingredients, and/or processing. Products manufactured using a revised pr
39、ocedure shall not be shipped prior to reapproval in writing. Manufacturer shall use ingredients, manufacturing procedures, processes, and methods of inspection, which are essentially the same as those used on the approved sample. 4.4.1.1 Control factors for producing products include but are not lim
40、ited 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 Basic molding procedure (compression, transfer, injection) Curing time and pressure; variations
41、of 10% are permissible Finishing methods Methods of inspection 4.4.1.2 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
42、Reports The supplier of the product shall furnish 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
43、number, AMS3331B, manufacturers compound number, form and size or part number, and quantity. 4.6 Resampling and Retesting If 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
44、 each original nonconforming specimen. Failure 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 DELIVERY 5.1 Identification and Packaging Shall be as stated on the purchase or
45、der or contract requirement, when no requirements are stipulated, packaging shall be in accordance with AMS2810. 5.1.1 A lot of product may be packaged in small quantities and delivered under the basic lot approval provided lot identification is maintained. Copyright SAE International Provided by IH
46、S under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3331B Page 7 of 76. ACKNOWLEDGMENT Supplier shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONS Product
47、 not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (l) 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 prev
48、ious 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
