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 2010 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/AMS3320H AEROSPACE MATERIAL SPECIFICATION AMS3320H Issued 1949-11 Reaffirmed 2001-04 Revised 201
5、0-05 Superseding AMS3320G Silicone (VMQ) Rubber Sheet, Glass Cloth Reinforced Heat and Weather Resistant 60 - 80 RATIONALE AMS3320H results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a silicone (VMQ) rubber, reinforced with glass cloth, in t
6、he form of sheet. 1.2 Application This sheet has been used typically for gaskets or seals requiring a resilient, nonporous sheet material suitable for operation from -67 to +401 F (-55 to +205 C), but usage is not limited to such applications. The material is resistant to deterioration by weathering
7、 and aircraft piston engine oil and remains flexible over the temperature range noted. This material is not normally suitable for use in contact with gasoline or aromatic fuels and low-aniline-point, petroleum-base fluids due to excessive swelling of the elastomer. 1.3 Safety Hazardous Materials Whi
8、le 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 sole responsibility of the user to ensure familiarity with the
9、 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 2.1 The purchase order date shall stipulate the published document that shall be in effect. The supplier may work to a subse
10、quent revision unless 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,
11、Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2817 Packaging and Identification, Preformed Packings AMS3824 Cloth, Glass, Finished for Resin Laminates SAE AMS3320H Page 2 of 5 2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P
12、.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 395 Rubber Property Compression Set ASTM D 471 Rubber Property Effect of Liquids ASTM D 573 Rubber Deterioration in An Air Oven ASTM D 751 Testing Coated Fabrics ASTM D 2137 Rubber Property Brittleness Point of F
13、lexible Polymers and Coated Fabrics ASTM D 2240 Rubber Property Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material and Fabrication Sheet shall be fabricated from a single ply of woven glass cloth conforming to AMS3824, Style 162, 182, 184, 1523, or 1564, impregnated with, and bonded between t
14、wo essentially equal thickness layers of a compound, based on a silicone (VMQ) rubber, molded to an overall thickness, after curing, of 0.062 to 0.125 inch (1.57 to 3.18 mm), and suitably cured to produce a product meeting the requirements of 3.2. 3.2 Properties Sheet shall conform to the requiremen
15、ts shown in Table 1; tests shall be performed on the sheet supplied and in accordance with specified ASTM methods, insofar as practicable: TABLE 1 INITIAL TEST REQUIRMENTS Paragraph Test Requirement Test Method 3.2.1 Original Properties 3.2.1.1 Hardness, Durometer “A“ or equivalent 70 10 4.5.1 3.2.1
16、.2 Breaking Strength, minimum 300 pounds force/inch (52.5 kN/m) ASTM D 751, Cut Strip Method 3.2.2 Petroleum Lubricating Oil Resistance: (Immediate Deteriorated Properties) ASTM D 471 ASTM Oil No. 1 Temperature: 347 F 5 (175 C 3) 3.2.2.1 Hardness Change, Durometer “A“ or equivalent -15 to +5 Time: 7
17、0 hours 0.5 3.2.2.2 Volume Change 0 to +10% 3.2.3 Dry Heat Resistance ASTM D 573 Temperature: 437 F 5 (225 C 3) Time: 22 hours 0.5 3.2.3.1 Hardness Change, Durometer “A“ or equivalent -5 to +10 3.2.3.2 Bend No Cracking Bend 180 degrees around a diameter equal to nominal thickness of sheet 3.2.4 Comp
18、ression Set 4.5.2 3.2.4.1 Percent of Original Deflection, maximum 35 3.2.5 Low-Temperature Brittleness ASTM D 2137, Procedure B Temperature: -67 F 2 3.2.5.1 Flex Pass (-55 C 1) Time: 5 hours 0.5 3.2.5.2 Delamination None SAE AMS3320H Page 3 of 5 3.2.6 Weather Resistance The product shall show no evi
19、dence of cracking when tested in accordance with ASTM D 1149, Method B, Procedure B2 for seven days at 105 F 2 (40 C 1). The ozone pressure shall be 50+5 mPa. 3.3 Dimensions and Tolerances Dimensions and tolerances shall be as specified in the parts standard, drawing or purchase document. If not spe
20、cified, thickness tolerance shall be 0.015 inch (0.38 mm). 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. 3.5 Quality Sheet
21、, as received by purchaser, shall be uniform in quality and condition, smooth, and free from foreign materials and from imperfections detrimental to usage of the sheet. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The manufacturer of the product shall be responsible for performa
22、nce 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 Acceptance Tests TABLE 2 ACCEPTANCE TESTS Requirement Paragraph Reference Hardness 3.2.1.1 Breakin
23、g Strength 3.2.1.2 4.2.1.1 Lot: A quantity of one size of product processed and packaged 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. 4.2.1.3 Random Sampling The method shall be as specified in the parts standard, drawing or p
24、urchase 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. 4.2.1.4 Sample shall be from a production batch/lot 4.3 Test Method
25、s 4.3.1 Hardness Shall be determined in accordance with ASTM D 2240 on sheet specimens stacked as close as practicable to 0.25 inch (6.4 mm) thick. SAE AMS3320H Page 4 of 5 4.3.2 Compression Set Test Shall be determined in accordance with ASTM D 395, Method B, on samples molded from the base rubber.
26、 Test conditions shall be 347 F 5 (175 C 3) for 22 hours 0.5. 4.4 Sampling and Testing Shall be as follows: 4.4.1 For Acceptance Tests Sufficient sheet 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
27、 applicable test procedure or, if not specified therein, not less than three. If test specimens cannot be prepared from the sheet, standard ASTM specimens prepared from the same batch and state of cure shall be used for the required tests. 4.4.1.1 When a statistical sampling plan has been agreed upo
28、n by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.5.1 and the report of 4.7 shall state that such plan was used. 4.4.2 For Preproduction Tests As agreed upon by purchaser and vendor. 4.5 Approval 4.5.1 Sample sheet shall be approved by purchaser be
29、fore sheet for production use is supplied, unless such approval be waived by purchaser. Results of tests on production sheet shall be essentially equivalent to those on the approved sample. 4.5.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods of inspection on producti
30、on sheet which are essentially the same as those used on the approved sample sheet. 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 changes in ingredients and/or proces
31、sing and, when requested, sample sheet. Production sheet made by the revised procedure shall not be shipped prior to receipt of reapproval. 4.6 Reports The supplier of the product shall make readily available a report showing the results of tests to determine conformance to the acceptance requiremen
32、ts and stating that the product conforms to the other technical requirements. This report shall include AMS number with revision, manufacturers identification and product designation, batch/lot number and date of manufacture. For products requiring source inspection, reports shall be stamped by the
33、third party source inspector. 4.7 Resampling and Retesting If any specimen fails, a retesting of three additional specimens for each nonconforming specimen shall be necessary for product acceptance. The same batch/lot of product used for the failed test shall be used for retesting. Failure of any re
34、test specimen shall be cause for rejection. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Identification and Packaging 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
35、2817. A lot may be packaged in small quantities and delivered under the basic lot approval provided lot information in maintained. SAE AMS3320H Page 5 of 5 5.1.1 Each package, box, and shipping container shall be permanently and legibly marked with the following when pertinent: Specification number
36、AMS number with revision, class, grade, and type Manufacturers identification Manufacturers product designation Batch/lot number Date of manufacturing/packaging Shelf life expiration date Storage conditions 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in
37、 all quotations and when acknowledging purchase orders. 7. REJECTIONS Sheet not conforming to this specification, or to modifications authorized by 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 w
38、here technical revisions, not editorial changes, have been made to the previous issue of a document. An (R) symbol 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 document
39、s that contain editorial changes only. 8.2 Standard Thicknesses Sheet is most readily available in nominal thicknesses of 0.062 inch (1.57 mm), 0.093 inch (2.36 mm), and 0.125 inch (3.18 mm). 8.3 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“
