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 ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this
3、publication may 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: +1 724-776-49
4、70 (outside USA) 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:/standards.sae.org/AMS3197M AEROSPACE MATERIAL SPECIFICATION AMS3197 REV. M Issued 1942-12 Reaffirmed 2007-03 Rev
5、ised 2017-03 Superseding AMS3197L Sponge, Chloroprene (CR) Rubber Soft RATIONALE This specification is being revised to clarify the responsibilities for inspection and product approval. 1. SCOPE 1.1 Form This specification covers a chloroprene (CR) rubber sponge in the form of sheet, strip, molded s
6、hapes, or other forms, as ordered. 1.2 Application These products have been used typically for general applications requiring the use of open-cell, soft rubber sponge pads and seals operating from -40 to +176 F (-40 to +80 C), but usage is not limited to such applications. 1.3 Safety - Hazardous Mat
7、erials 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 sole responsibility of the user to ensure familiarit
8、y 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 purchase order forms a part of this specificatio
9、n 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 published issue of that document shall apply. 2.1 SAE
10、 Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2810 Identification and Packaging Elastomeric Products SAE INTERNATIONAL AMS3197M Page 2 of 7 2.2 ASTM Public
11、ations 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 D1056 Flexible Cellular Materials Sponge or Expanded Rubber 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on a chloroprene (CR)
12、elastomer with agents to form an open-cell sponge, suitably cured to produce a product meeting the technical requirements of this specification. 3.1.1 Color Shall be black. 3.1.2 Finish The top and bottom surfaces of sheet and strip and the exterior surfaces of molded parts shall have a natural skin
13、 finish. Fabric or wire mesh type of surface impressions are not objectionable. 3.1.3 Vulcanized Joints Vulcanized joints are permissible in molded products where the finished product is larger than is usual industry practice to mold in one section. If a vulcanized joint is necessary, the joint shal
14、l have the same strength, size, and color as the parent material. 3.2 Properties Sponge shall conform to the following requirements; tests shall be performed on the sponge supplied and in accordance with ASTM D1056 except as otherwise specified herein. 3.2.1 Compression Deflection Shall be 1 to 4 ps
15、i (6.9 to 27.6 kPa) at 68 to 86 F (20 to 30 C). 3.2.2 Specific Volume Shall be as shown in Table 1 for each nominal thickness; a tolerance of 10% will be allowed. 3.2.3 Hydrogen Ion Concentration (pH) Shall be 7.0 1.0, determined in accordance with 4.5.1. 3.2.4 Dry Heat Resistance Shall be as follow
16、s, determined in accordance with 4.5.2. SAE INTERNATIONAL AMS3197M Page 3 of 7 Table 1 - Specific volume Nominal Thickness Inches Nominal Thickness Millimeters Specific Volume Cubic Inches per Pound Specific Volume Cubic Centimeters per Gram 1/32 0.8 26 0.92 1/16 1.6 36 1.30 3/32 2.4 42 1.52 1/8 3.2
17、 48 1.73 3/16 4.8 55 1.99 1/4 6.4 58 2.10 5/16 7.9 61 2.20 3/8 9.5 63 2.28 1/2 12.7 66 2.38 5/8 15.9 70 2.53 3/4 19.0 73 2.64 7/8 22.2 77 2.78 1 25.4 80 2.89 1-1/2 38.1 87 3.14 3.2.4.1 Compression Deflection Change -5 to +30%. 3.2.4.2 Specific Volume Change -10 to +10%. 3.2.4.3 Bend (Flat) No cracki
18、ng or checking. 3.2.5 Compression Set Shall be as follows, determined at 158 F 2 F (70 C 1 C) for 22 hours 0.2 hour. 3.2.5.1 Percent of Original Deflection Not higher than 40. 3.2.5.2 Percent of Original Thickness Not higher than 20. 3.2.6 Low-Temperature Flexibility When specified, the product shal
19、l have low-temperature flexibility acceptable to purchaser, determined by a procedure agreed upon by purchaser and vendor. 3.2.7 Weather Resistance When specified, the product shall have weather resistance acceptable to purchaser, determined by a procedure agreed upon by purchaser and vendor. SAE IN
20、TERNATIONAL AMS3197M Page 4 of 7 3.3 Quality The product, as received by purchaser, shall be uniform in quality and condition, smooth, as free from foreign materials as commercially practicable, and free from imperfections detrimental to usage of the product. 3.4 Dimensions and Tolerances Dimensions
21、 and tolerances shall be as specified in the parts standard, drawing or purchase document. If not specified, shall conform to the following values; measurements shall be made in accordance with ASTM D1056. 3.4.1 Sheet and Strip 3.4.1.1 Thickness Shall be specified in Table 2: Table 2 Table 2A - Thic
22、kness tolerance, inch/pound units Nominal Thickness Inch Tolerance, Inch Plus and Minus Up to 1/8, incl 1/64 Over 1/8 to 1/2, incl 1/32 Over 1/2 3/64 Table 2B - Thickness tolerance, SI units Nominal Thickness Millimeters Tolerance, Millimeters Plus and Minus Up to 3.2, incl 0.4 Over 3.2 to 12.7, inc
23、l 0.8 Over 12.7 1.2 3.4.1.2 Width Shall be specified in Table 3: Table 3 Table 3A - Width tolerance, inch/pound units Nominal Width Inches Tolerance, Inch Plus and Minus Up to 6, incl 1/16 Over 6 to 18, incl 1/8 Over 18 1/4 Table 3B - Width tolerance, SI units Nominal Width Millimeters Tolerance, Mi
24、llimeters Plus and Minus Up to 152, incl 1.6 Over 152 to 457, incl 3.2 Over 457 6.4 SAE INTERNATIONAL AMS3197M Page 5 of 7 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 manufacturers instruct
25、ions and with appropriate handling procedures. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The supplier 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
26、product conforms to the AMS requirements. 4.2 Classification of Tests All technical requirements are acceptance tests and preproduction tests and shall be performed prior to or on the initial shipment of sponge to a purchaser, on each lot, when a change in ingredients and/or processing requires reap
27、proval 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 sponge shall be taken at random from each lot to perform all required tests. The number of determinations for each requirement shall b
28、e as specified in the applicable test procedure or, if not specified therein, not less than three. 4.3.1.1 A batch shall be all material run through a mixer at one time. 4.3.1.2 A lot shall be not more than 2500 pounds (1134 kg) of sponge from one batch. 4.3.1.3 When a statistical sampling plan has
29、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 4.6 shall state that such plan was used. 4.3.2 For Preproduction Tests As agreed upon by purchaser and vendor. 4.4 Approval 4.4.1 If required by the purchaser, s
30、ponge shall be approved by purchaser before sponge for production use is supplied, unless such approval be waived by purchaser. Results of tests on production sponge shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedures, process
31、es, and methods of inspection on production sponge which are essentially the same as those used on the approved sample. 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
32、changes in ingredients and/or processing and, when requested, sample sponge. Production sponge made by the revised procedure shall not be shipped prior to receipt of reapproval. SAE INTERNATIONAL AMS3197M Page 6 of 7 4.5 Test Methods 4.5.1 Hydrogen Ion Concentration (pH) Dice approximately 1 in3(16
33、cm3) of sponge to approximately 1/8 inch (3.2 mm) or smaller cubes and extract with continuous agitation for 60 minutes 6 minutes with 100 mL of freshly distilled water. Determine pH of the extract by chemical means or pH meter. 4.5.2 Dry Heat Aging A sample of sponge 4 inches (102 mm) square shall
34、be suspended for 22 hours 0.2 hour by a wire attached to one corner of the sample in a circulating-air convection oven operating at 212 F 2 F (100 C 1 C). The sample shall be removed from the oven and trimmed to 2 inches (51 mm) square by removing 1 inch (25 mm) from each side prior to testing. Stan
35、dard specimens shall be cut from the sample and tested by the procedure used for the sponge as received. Bend test specimens shall be the 1 inch (25 mm) wide strips produced in trimming the 4 inch (102 mm) square sample to a 2 inch (51 mm) square. 4.6 Reports The vendor of sponge shall furnish with
36、each shipment a report showing the results of tests to determine the conformance to the technical requirements. This report shall include the purchase order number, lot number, AMS3197M, vendors compound number, form or part number, and quantity. 4.7 Resampling and Retesting If any specimen fails, a
37、 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 retest specimen shall be cause for rejection. Results of all tests shall be reported.
38、 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 AMS2810. A lot may be packaged in small quantities and delivered under the basic lot a
39、pproval provided lot information is maintained. 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 designat
40、ion 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 all quotations and when acknowledging purchase orders. 7. REJECTIONS Sponge not conforming to this specific
41、ation, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS3197M Page 7 of 7 8. NOTES 8.1 Revision Indicator 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,
42、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 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“
