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    SAE AMS 3346G-2013 Silicone Rubber 1000 psi (6 89 MPa) Minimum Tensile Strength 55 - 65 Durometer《最小拉伸强度为1000 psi(6 89 MPa)的硬度范围55-65的硅酮橡胶》.pdf

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    SAE AMS 3346G-2013 Silicone Rubber 1000 psi (6 89 MPa) Minimum Tensile Strength 55 - 65 Durometer《最小拉伸强度为1000 psi(6 89 MPa)的硬度范围55-65的硅酮橡胶》.pdf

    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 2013 SAE InternationalAll rights reserved. No part of this publication may b

    3、e 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 USA)Fax

    4、: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3346GAEROSPACEMATERIALSPECIFICATIONAMS3346 REV. GIssued 1956-07Reaffirmed 2001-10Revised 2013-07Supers

    5、eding AMS3346FSilicone Rubber1000 psi (6.89 MPa) Minimum Tensile Strength55 - 65 DurometerRATIONALEAMS3346G Specification was updated for the five year review.1. SCOPE1.1 FormThis specification covers a silicone rubber material that can be used to manufacture product in the form of sheet, strip, tub

    6、ing, molded shapes, and extrusions.This specification should not be used to address products such as O-rings, compression seals, O-ring cord, and molded-in-place gaskets.1.2 ApplicationThese products have been used typically for parts required to operate or seal at temperatures from -130 to +401 F (

    7、-90 to +205 C), compounded especially for high strength, but usage is not limited to such applications. Silicone elastomer is resistant to deterioration by weathering and aircraft piston engine oil and remains flexible over the temperature range noted. These products are not normally suitable for us

    8、e in contact with gasoline or aromatic fuels and low-aniline-point petroleum-base fluids due to excessive swelling of the elastomer.1.3 Terms / Definitions1.3.1 “Material”The mixed rubber compound used to manufacture product.1.3.2 “Product”The end product being supplied to the contract/purchase orde

    9、r originator, usually in the form(s) specified in 1.1 above.1.3.3 “Lot”Shall be all products from the same batch of compound processed in one continuous run and submitted for inspection at one time. The material batch size allowed to form any single inspection lot of product shall not exceed 500 pou

    10、nds (227 kg).SAE AMS3346G Page 2 of 81.3.4 “Batch”Shall be the quantity of compound run through a mill or mixer at one time. (Note: Smaller batches of mixed compound may be formed into a larger batch by utilizing a cross blending process that insures the homogenous nature of the newly formed larger

    11、batch. When utilizing this process all ingredient traceability of the smaller batches must be maintained and directly tied to the resulting larger batch. Only the resulting larger batch needs to be subject to Batch Acceptance Testing requirements of this specification.)1.3.5 “Mixer”The vendor in the

    12、 supply chain that performs the actual mixing of the Rubber Compound utilized to produce product.1.3.6 “Masterbatch”A batch of compound that has been mixed to completely incorporate most of the compound ingredients, omitting the active chemicals that constitute the cure system. Typically for silicon

    13、e compounds this includes catalysts and color pigments.1.3.7 “Material Rework”Minor adjustments made to the existing ingredient content levels of a compound recipe, while remaining within the tolerance limits specified in the recipe, which may enhance physical properties or processability performanc

    14、e, yet stillmaintain the original compound identity.1.4 Safety Hazardous 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

    15、in such use. It is the sole 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 DOCUMENTSThe issue of the following documents in e

    16、ffect on the date of the 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

    17、specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2279 Tolerances, Rubber ProductsAMS2810 Id

    18、entification and Packaging, Elastomeric Products2.2 ASTM PublicationsAvailable 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

    19、 Test Methods for Rubber Property - Compression SetASTM D 412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers TensionASTM D 471 Standard Test Methods for Rubber Property - Effect of Liquids ASTM D 573 Standard Test Method for Rubber - Deterioration in an Air OvenSAE AMS3346G

    20、 Page 3 of 8ASTM D 624 Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersASTM D 2137 Standard Test Methods for Rubber Property - Brittleness Point of Flexible Polymers and Coated Fabrics ASTM D 2240 Standard Test Method for Rubber Property - Duromet

    21、er HardnessASTM D3182 Standard Practice for Rubber Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets.3. TECHNICAL REQUIREMENTS3.1 MaterialShall be a compound, based on a silicone rubber, suitably cured to produce a product meeting the require

    22、ments of 3.2.3.1.1 Toxicological FormulationsThe material shall have no adverse effects on the health of personnel when used for its intended purpose in accordancewith manufacturers instructions and with appropriate handling procedures.3.1.2 ColorThe color of the material shall be as specified on av

    23、ailable design data or per customer contract. When no color is specified, the color shall be the natural color of the compound furnished.3.2 Physical PropertiesThe product shall conform to the requirements shown in Table 1; tests shall be performed in accordance with specified ASTM methods, insofar

    24、as practicable (also see 4.2.3):SAE AMS3346G Page 4 of 8TABLE 1 - PROPERTIESParagraph Test Requirement Test Method3.2.1 Original Properties3.2.1.1 Hardness, Durometer “A“or equivalent60 5ASTM D 22403.2.1.2 Tensile Strength,minimum1000 psi(6.89 MPa)ASTM D 412, Die B or C3.2.1.3 Elongation, minimum400

    25、% ASTM D 412, Die B or C3.2.1.4 Tear Strength, minimum150 pounds force/inch(26.3 kN/m)ASTM D 624, Die B3.2.1.5 Specific GravityPreproductionValue 0.03ASTM D 2973.2.2 Petroleum Lubricating Oil Resistance3.2.2.1 Hardness Change,Durometer “A“ or equivalent-10 to +5ASTM D 471ASTM Oil No. 1150 C 3(302 F

    26、5)70 hours 0.53.2.2.2 Tensile Strength Change,maximum-25%3.2.2.3 Elongation Change, maximum-35%3.2.2.4 Volume Change, maximum0 to +15%3.2.3 Dry Heat Resistance3.2.3.1 Hardness Change,Durometer “A“ or equivalent0 to +20ASTM D 573200 C 3(392 F 5)70 hours 0.53.2.3.2 Tensile Strength Change,maximum-40%3

    27、.2.3.3 Elongation Change, maximum-50%3.2.4 Compression Set3.2.5 Percent of OriginalDeflection, maximum55ASTM D 395, Method B175 C 3(347 F 5)22 hours 0.53.2.6 Low-Temperature Resistance3.2.6.1 BrittlenessPass ASTM D 2137, Method A-90 C 3(-130 F 5)3.3 Product QualityThe product, as received by purchas

    28、er, 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 AMS3346G Page 5 of 83.4 Dimensions and TolerancesDimensions and tolerances shall be as specified in the parts standar

    29、d, drawing, other design data, or purchase document, and shall conform to all applicable requirements of AMS2279.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the product shall be responsible to assure that all required material testing and product inspection has been

    30、 performed and that the data is available. Unless specified otherwise by contractual requirements, testing may be performed either at the product vendors own test facility, at the mixer, or at a suitable independent test facility. Purchaser reserves the right to sample and to perform any confirmator

    31、y testing deemed necessary to ensure that the product conforms to specified requirements.4.2 Classification of Tests4.2.1 Preproduction TestingPreproduction Testing shall consist of all of the Physical Property requirements listed in Table 1 and shall be performed prior to certification of materials

    32、 to this Specification. Compound preproduction testing is valid for a period of three (3) years or until preproduction re-testing may be required (See 4.2.1.1). Objective evidence of this testing must be kept on file and available for review during the validity period.4.2.1.1 Preproduction retesting

    33、 shall be required if one of the following occurs:g120 At the end of the current three year Preproduction Testing validity period or;g120 When a change in ingredients and/or processing requires re-approval as in 4.5.2 - or;g120 Upon three consecutive failures of batch Acceptance Testing or,g120 When

    34、 the Purchaser contractually requires that Preproduction Testing be performed.4.2.2 Acceptance TestsThe following requirements are acceptance tests and shall be performed on each batch of mixed compound (See 4.1):Each production batch that may have been drawn from a larger uncatalyzed masterbatch, a

    35、nd then had the catalyst incorporated, shall be subject to this requirement.Hardness, Original Properties (3.2.1.1)Tensile Strength, Original Properties (3.2.1.2)Elongation, Original Properties (3.2.1.3)Specific Gravity, Original Properties (3.2.1.5)Compression Set, (3.2.4)4.2.3 Test Samples4.2.3.1

    36、For Preproduction Testing, specimens shall be prepared from 6 inch (152 mm) square by 0.075 inch 0.008 (1.90 mm 0.20) thick molded test slabs per ASTM D3182 compounded for the same intended curing process as the end product.SAE AMS3346G Page 6 of 84.2.3.2 For Acceptance Testing, sufficient material

    37、shall be taken at random from each lot of product to provide specimens 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 (See 4.2.3.3 below). If specimens cannot be

    38、 prepared from the product, test specimens prepared from the same batch of material and in the same state of cure as the product shall be used. At a minimum, specific gravity tests shall be conducted on the end item or a section removed from the end item (except as noted in 4.2.3.2.3 below).4.2.3.2.

    39、1 If the product supplied is an extrusion of such shape that suitable test specimens cannot be cut from the product, then a separate extruded flat strip test sample, 3.0 inches 0.25 (76.2 mm 6.4) by 0.075 inch 0.008 (1.90 mm 0.20) thick, produced from the same production batch of compound, in the sa

    40、me state of cure as the product being supplied, shall be used to prepare test specimens.4.2.3.2.2 When the product is a molded item of such shape that suitable test specimens cannot be cut, a slab 6 inches (152 mm) square by 0.075 inch 0.008 (1.90 mm 0.20) thick per ASTM D 3182, molded from the same

    41、 batch of compound, in the same state of cure as the product being supplied, shall be used to prepare test specimens.4.2.3.2.3 When the mixer of the material is not the actual manufacturer of the end product, specimens shall be prepared from 6 inch (152 mm) square by 0.075 inch 0.008 (1.90 mm 0.20)

    42、thick molded test slabs per ASTM D3182, catalyzed and cured equivalent to the intended curing process for the end product.4.2.3.3 Specimen Test ValuesAll individual specimen test result values used to determine pass/fail criteria must be within acceptable limits as indicated in Table 1. Where Test M

    43、ethods dictate that results be reported as Average or Median values, failed values shall not be allowed in these calculations (See 4.2.4).4.2.4 Retesting and Rework4.2.4.1 If any specimen fails to meet the pass/fail criteria as listed in Table 1, a retesting of three (3) additional specimens with ac

    44、ceptable results for each nonconforming specimen, shall be necessary for acceptance. The same material batch as was used for the failed test shall be used for retesting. Failure of any retest specimen shall be cause for rejection of the batch along with the rejection of any product that may have bee

    45、n produced from the batch. Results of all tests shall be reported. Records of all rejections and material rework shall be maintained.4.2.4.1.1 Individual specimen failures that occur due to obvious flaws in the specimen itself or because of mechanical failure of the test equipment, may be disregarde

    46、d with only a single retest specimen required for acceptance. All such occurrences must be recorded.4.2.4.2 Any rejected batch that has undergone material rework because of failed Acceptance Testing must be retested to the full Acceptance Criteria, not just the failed test.4.2.4.2.1 No batch may be

    47、reworked more than two (2) times.4.3 SamplingWhen a statistical sampling plan for product acceptance has been agreed upon by purchaser and vendor, sampling shall be in accordance with such plan and the report of 4.6 shall state that such plan was used, Otherwise sampling shall be in accordance with

    48、ANSI/ASQ-Z1.4, Single Sampling Plan, Inspection Level II, AQL 1.0, except that the acceptance number shall be zero (0).4.4 CertificationCertification to this Material Specification shall only be permitted if all testing requirements specified in 4.2 have been met.SAE AMS3346G Page 7 of 84.5 Approval

    49、4.5.1 When the contract requires that sample product be submitted for approval by the purchaser before product for production use is supplied, results of tests on production product shall be essentially equivalent to those on the approved sample.4.5.2 The vendor(s) shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which ar


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