1、AEROSPACEMATERIALSPECIFICATIONAMS3305 REV. JIssued 1948-11Reaffirmed 2001-04Revised 2014-11Superseding AMS3305HSilicone, RubberGeneral Purpose80 DurometerRATIONALEAMS3305J results from a Five Year Review and update of this specification. The requirements for low temperature modulus per ASTM D 797 we
2、re eliminated per committee agreement since this test specification is obsolete. In addition, the general requirements for corrosion and weathering resistance were eliminated.1. SCOPE1.1 FormThis specification covers a silicone rubber in the form of sheet, strip, tubing, extrusions, and molded shape
3、s.1.2 ApplicationThis products has been used typically for parts required to operate or seal from -85 to +401 F (-65 to +205 C), but usage is not limited to such applications. This material and specification are not intended for O-ring applications. Silicone elastomer is resistant to deterioration b
4、y 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-base fluids due to excessive swelling of the elastomer.1.3 Safety-Hazardo
5、us MaterialsWhile 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 famil
6、iarity 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 DOCUMENTSThe issue of the following documents in effect on the date of the purchase order forms a part of this specification
7、 to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issueis specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply._SAE Techn
8、ical 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 therefrom, is th
9、e 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 2014 SAE InternationalAll rights reserved. No part of this publication may be reproduc
10、ed, 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 USA)Fax: 724-776-0
11、790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3305JSAE AMS3305J Page 2 of 62.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warren
12、dale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2279 Tolerances, Rubber ProductsAMS2810 Identification and Packaging, Elastomeric Products2.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Co
13、nshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM D 297 Rubber ProductsChemical AnalysisASTM D 395 Rubber PropertyCompression SetASTM D 412 Vulcanized Rubber and Thermoplastic ElastomersTensionASTM D 471 Rubber PropertyEffect of LiquidsASTM D 573 RubberDeterioration in an Air OvenASTM
14、D 624 Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersASTM D 2137 Rubber PropertyBrittleness Point of Flexible Polymers and Coated FabricsASTM D 2240 Rubber PropertyDurometer Hardness3. TECHNICAL REQUIREMENTS3.1 MaterialShall be a compound, based on a silicone elastomer,
15、suitably cured to produce a product meeting the requirements of 3.2.3.2 PropertiesThis product shall conform to the following requirements; tests shall be performed on the product supplied and in accordance with specified ASTM methods, insofar as practicable.SAE AMS3305J Page 3 of 6TABLE 1Paragraph
16、Property Requirement Test Method3.2.1 As Received3.2.1.1 Hardness, Durometer “A”or equivalent 80 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 100% ASTM D 412, Die B or C3.2.1.4 Tear Resistance, minimum 25 pounds forceper inch(4.38 k
17、N/m)ASTM D 624, Die B3.2.1.5 Specific Gravity PreproductionValue 0.03ASTM D 2973.2.2 Petroleum Lubricating Oil Resistance(Immediate Deteriorated Properties)ASTM D 471Medium: IRM 901 OilTemperature: 302 F 5(150 C 3)Time: 70 hours 0.53.2.2.1 Hardness Change,Durometer “A” -15 to +53.2.2.2 Tensile Stren
18、gth,Change, maximum -20%3.2.2.3 Elongation Change,maximum -15%3.2.2.4 Volume Change 0 to +15%3.2.2.5 Decomposition None3.2.2.6 Surface Tackiness None3.2.3 Dry Heat Resistance ASTM D 573Temperature: 437 F 5(225 C 3)3.2.3.1 Hardness Change,Durometer “A” orequivalent10Time: 70 hours 0.53.2.3.2 Tensile
19、StrengthChange, maximum -25%3.2.3.3 Elongation Change,maximum -40%3.2.3.4 Bend (flat) No crackingor checking3.2.4 Compression Set ASTM D 395, Method BTemperature: 302 F 53.2.4.1 Percent of OriginalDeflection, maximum30 (150 C 3)Time: 70 hours 0.53.2.5 Low Temperature Resistance3.2.5.1 Brittleness Pa
20、ss ASTM D 2137, Method ATemperature: -85 F 5(-65 C 3)Time: 3 minutes 0.33.3 QualityThe 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.SAE
21、 AMS3305J Page 4 of 63.4 TolerancesShall conform to all applicable requirements of AMS2279.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchase
22、r reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsThe following requirements are acceptance tests and shall be performed on each lot:TABLE 2Requirement
23、 ParagraphHardness, as received 3.2.1.1Tensile Strength, as received 3.2.1.2Elongation, as received 3.2.1.3Specific Gravity 3.2.1.54.2.2 Preproduction TestsAll technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of a product to a purchaser, when
24、a 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 TestingShall be as follows:4.3.1 For Acceptance TestsSufficient product shall be taken at random from each lot to perform all required tests. The n
25、umber 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 prepared from the product, ASTM test specimens prepared from the same batch and state of cure shall be used. When the p
26、roduct 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 from tubing 1.000 inch 0.063 (25.40 mm 1.60) in OD by 0.075 inch 0.00
27、8 (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 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) m
28、olded 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 one continuous production run and presented for vendors inspection at one time.4.3.1.3 A batch shall be the quantity of compound run through a mill or
29、mixer at one time. Excluded from the definition is the mixing and combining of batches of previously compounded material (such as remaining tuber or extruder heads).SAE AMS3305J Page 5 of 64.3.1.4 When a statistical sampling plan has been agreed upon by purchaser and vendor, sampling shall be in acc
30、ordance with such plan in lieu of sampling as in 4.3.1 and the report of 4.5 shall state that such plan was used.4.3.2 For Preproduction TestsAs agreed upon by purchaser and vendor.4.4 Approval4.4.1 Sample product shall be approved by purchaser before product for production use is supplied; unless s
31、uch approval be waived by 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 thos
32、e used on the approved sample 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. Pro
33、duction product made by the revised procedure shall not be shipped prior to receipt of reapproval.4.5 ReportsThe 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 conf
34、orms to the other technical requirements. This report shall include the purchase order number, lot number, AMS3305J, vendors compound number, form and size or part number, and quantity.5. PREPARATION FOR DELIVERY5.1 Identification and PackagingShall be in accordance with AMS2810.6. ACKNOWLEDGMENTA v
35、endor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) located in
36、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 complete revision of the specification, including technical r
37、evisions. 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 units and the Fahrenheit temperatures are primary; dimensions and properties in SI
38、 units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information.SAE AMS3305J Page 6 of 68.4 Purchase documents should specify not less than the following:AMS3305JForm and size or part number of product desiredQuantity of produc
39、t desiredAcceptance standards and test methods for weather resistance (See 3.2.6) and corrosion (See 3.2.7).8.5 Similar SpecificationsFederal A-A-59588A (formerly ZZ-R-765) Classes 2A or 2B Grade 80 is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met.PREPARED BY AMS COMMITTEE “CE”
