1、SAE-AMS3304ADOPTION NOTICESAE-AMS3304, “SILICONE RUBBER, GENERAL PURPOSE 70 DUROMETER“, wasadopted on 30-JUN-89 for use by the Department of Defense(DoD). Proposed changes by DoD activities must be submitted tothe DoD Adopting Activity: Commander, Naval Air Warfare Center,Aircraft Division, Code 414
2、100B120-3, Highway 547, Lakehurst, NJ08733-5100. Copies of this document may be purchased from theSociety of Automotive Engineers 400 Commonwealth DriveWarrendale, Pennsylvania, United States, 15096-0001. http:/www.sae.org/_Custodians: Adopting Activity:Navy - ASArmy - MRNavy - ASAir Force - 11Revie
3、wer Activities:DLA - GSFSC 9320DISTRIBUTION STATEMENT A: Approved for public release; distributionis unlimited.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE Technical Standards Board Rules provid
4、e that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.
5、”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 2001 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.QUESTIONS REGARDING THIS DOCUMENT: (724)
6、 772-7161 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS: http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE MATERIAL SPECIFICATIONAMS 3304GIssued NOV 1948Revised JUL 1990Reaffirmed APR 2001Superseding AMS 3304FSilicone, Rubbe
7、rGeneral Purpose70 DurometerFOREWORDThis Reaffirm contains format/editorial changes only.1. SCOPE:1.1 Form: This specification covers a silicone rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.1.2 Application: Primarily for parts required to operate or seal from -65 to +205
8、 C (-85 to +401 F). Silicone elastomer is resistant to deterioration by weathering and petroleum-base lubricating oil and remains flexible over the temperature range noted. These products are not normally suitable for use in contact with gasoline or aromatic fuels and low-aniline-point petroleum-bas
9、e fluids due to excessive swelling of the elastomer.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 involve
10、d in such use. It is the sole responsibility of the user to ensure familiarity with 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 following publications form a part of
11、 this specification to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduct
12、ion or networking permitted without license from IHS-,-AMS 3304G SAE AMS 3304G- 2 -2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.2.1.1 Aerospace Material Specifications: AMS 2279 Tolerances, Rubber ProductsMAM 2279 Tolerances, Metric, Rubber ProductsAMS
13、2810 Identification and Packaging, Elastomeric Products2.2 ASTM Publications: Available from ASTM, 1916 Race Street, Philadelphia, PA 19103-1187.ASTM D 297 Rubber Products - Chemical AnalysisASTM D 395 Rubber Property - Compression SetASTM D 412 Rubber Properties in TensionASTM D 471 Rubber Property
14、 - Effect of LiquidsASTM D 573 Rubber - Deterioration in an Air OvenASTM D 624 Rubber Property - Tear ResistanceASTM D 797 Rubber Property - Youngs Modulus at Normal and Subnormal TemperaturesASTM D 2137 Rubber Property - Brittleness Point of Flexible Polymers and Coated FabricsASTM D 2240 Rubber Pr
15、operty - Durometer Hardness3. TECHNICAL REQUIREMENTS: 3.1 Material: Shall be a compound, based on a silicone rubber, suitably cured to produce a product meeting the requirements of 3.2.3.2 Properties: This product shall conform to the following requirements; tests shall be performed on the product s
16、upplied and in accordance with specified ASTM methods, insofar as practicable.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS 3304G SAE AMS 3304G- 3 -TABLE 13.2.1 As Received:3.2.1.1 Hardness, Duro
17、meter “A”or equivalent 70 5ASTM D 22403.2.1.2 Tensile Strength, minimum 650 psi(4.48 MPa)ASTM D 412, Die B or C3.2.1.3 Elongation, minimum 125% ASTM D 412, Die B or C3.2.1.4 Tear Resistance, minimum 25 pounds forceper inch(4.38 kN/m)ASTM D 624, Die B or C3.2.1.5 Specific Gravity PreproductionValue 0
18、.03ASTM D 2973.2.2 Petroleum Lubricating Oil Resistance:(Immediate Deteriorated Properties)ASTM D 471Medium: ASTM Oil No. 1Temperature: 150 C 33.2.2.1 Hardness Change,Durometer “A” or equivalent -15 to +5(302 F 5)Time: 70 hours 0.53.2.2.2 Tensile Strength,Change, maximum -20%3.2.2.3 Elongation Chang
19、e, maximum -15%3.2.2.4 Volume Change, maximum +15%3.2.2.5 Decomposition None3.2.2.6 Surface Tackiness None3.2.3 Dry Heat Resistance: ASTM D 573Temperature: 225 C 3(437 F 5)3.2.3.1 Hardness Change,Durometer “A” orequivalent 10Time: 70 hours 0.53.2.3.2 Tensile StrengthChange, maximum -25%3.2.3.3 Elong
20、ation Change,maximum -40%3.2.3.4 Bend (flat) No crackingor checking3.2.4 Compression Set: ASTM D 395, Method BTemperature: 150 C 33.2.4.1 Percent of OriginalDeflection, maximum 25(302 F 5)Time: 70 hours 0.53.2.5 Low Temperature Resistance:Copyright SAE International Provided by IHS under license wit
21、h SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS 3304G SAE AMS 3304G- 4 -3.2.6 Weathering: When specified, the product shall have weather resistance acceptable to purchaser, determined by a procedure agreed upon by purchaser and supplier.3.2.7 Corrosion: The
22、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 vendor. Discoloration of metal shall not be considered objectionable.3.3 Quality: The product, as received by purchaser, sha
23、ll 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 to all applicable requirements of AMS 2279 or MAM 2279.4. QUALITY ASSURANCE PROVISIONS: 4.1 Respons
24、ibility for Inspection: The vendor of the product shall supply all samples for vendors tests and shall be responsible for performing all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to the requirem
25、ents of this specification.4.2 Classification of Tests: 4.2.1 Acceptance Tests: Tests for the following requirements are acceptance tests and shall be performed on each lot:3.2.5.1 Brittleness Pass ASTM D 2137, Method ATemperature: -65 C 3(-85 F 5)Time: 3 minutes 0.33.2.5.2 Youngs Modulus, maximum(S
26、ee 8.2)10,000 psi(68.9 MPa)ASTM D 797Temperature: -50 C 3(-58 F 5)Time: 5 hours 0.2TABLE 1 (Continued)Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS 3304G SAE AMS 3304G- 5 -4.2.2 Preproduction Tes
27、ts: Tests for all technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of a product to a purchaser, when a change in ingredients and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required.4.2.2.
28、1 For direct U.S. Military procurement, substantiating test data and, when requested, preproduction test material shall be submitted to the cognizant agency as directed by the procuring activity, contracting officer, or request for procurement.4.3 Sampling and Testing: Shall be as follows:4.3.1 For
29、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 specimens cannot be prepare
30、d 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 sample from the same production lot shall be supplied
31、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 production material. When the product is a molded sha
32、pe 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) 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 compound processed in a continuous production run and present
33、ed for vendors 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 When a statistical sampling plan has been agreed upon by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.3 and the
34、report of 4.5 shall state that such plan was used. TABLE 2RequirementParagraphReference Hardness, as received 3.2.1.1Tensile Strength, as received 3.2.1.2Elongation, as received 3.2.1.3Specific Gravity 3.2.1.5Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduc
35、tion or networking permitted without license from IHS-,-AMS 3304G SAE AMS 3304G- 6 -4.3.2 For Preproduction Tests: As agreed upon by purchaser and vendor. 4.4 Approval: 4.4.1 Sample product shall be approved by purchaser before product for production use is supplied; unless such approval be waived b
36、y purchaser. Results of tests on production product shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as those used on the approved s
37、ample product. 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 processing and, when requested, sample product. Production product made by
38、the revised procedure shall not be shipped prior to receipt of reapproval.4.5 Reports: The vendor 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 tech
39、nical requirements. This report shall include the purchase order number, lot number, AMS 3304G, vendors 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 produ
40、ct may be based on the results of testing three additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the product represented and no additional testing shall be permitted. Results of all tests
41、shall be reported.5. PREPARATION FOR DELIVERY: 5.1 Identification and Packaging: Shall be in accordance with AMS 2810 or other method acceptable to purchaser.6. ACKNOWLEDGMENT: A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase
42、orders.7. REJECTIONS: Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS 3304G S
43、AE AMS 3304G- 7 -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 this specification. An (R) symbol to the left of the document title indicates a c
44、omplete revision of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.8.2 The test for Youngs Modulus is not normally required but is intended to be used as a referee test in case of
45、disagreement on the results of the brittleness test.8.3 Dimensions and properties in inch/pound units and the Celsius temperatures are primary; dimensions and properties in SI units and the Fahrenheit temperatures are shown as the approximate equivalents of the primary units and are presented only f
46、or information.8.4 For direct U.S. Military procurement, purchase documents should specify not less than the following:Title, number, and date of this specificationForm and size or part number of product desiredQuantity of product desiredMethod of test and acceptance standards for weather resistance
47、 (See 3.2.6) and corrosion (See 3.2.7)Level A packaging, if required (See AMS 2810).8.5 Similar Specifications: Federal ZZ-R-765, Class 2, Grade 70, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met.8.6 Products meeting t
48、he requirements of this specification have been classified under Federal Supply Classification (FSC) 9320.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “CE”Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-
