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 2012 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/AMS3217/8AEROSPACEMATERIALSPECIFICATIONAMS3217/8Issued 2012-05Test Slabs, Fluoroelastomer (FKM), 70-80 Ha
5、rdness,for Improved Gas Turbine Engine Oil CompatibilityRATIONALEThere is an industry need to provide an FKM reference elastomer with demonstrated compatibility to a variety of gas turbine engine oils, including higher thermo-oxidative stability (HTS) lubricants, including those conforming to MIL-PR
6、F-23699 Class HTS, MIL-PRF-7808 Grade 4 and AS5780 Class HPC, at elevated temperature (392 F / 200 C).1. SCOPE1.1 Form This specification covers a fluorocarbon elastomer as designated by ASTM D 1418 FKM Type 3 rubber stock in the form of molded test slabs.1.2 Application See AMS3217.2. APPLICABLE DO
7、CUMENTSSee AMS3217.3. TECHNICAL REQUIREMENTS 3.1 Basic Specifications The complete requirements for test slabs described herein and their procurement shall consist of this document and the latest issue of the basic specification AMS3217.3.2 Material Shall be a fluoroelastomer (FKM) compounded to the
8、 formulation shown in Table 1.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3217/8 Page 2 of 3TABLE 1 - FORMULATIONIngredients PartsVitonGLT-600S or equivalent* 100.0 (See 3.2.1)Elastomag170
9、 or equivalent* 3.0 (See 3.2.2)Sterling MT, N990 or equivalent ASTM D 1765, N990 Classification 30.0 (See 3.2.1)Diak 7 or equivalent* 3.0 (See 3.2.2)VaroxDBPH-50 or equivalent* 1.5 (See 3.2.2)Press Cure: 10 minutes 0.5 at 347 F 5 (175 C 2)Oven Cure: 8 hours 0.5 at 450 F 5 (232 C 2)*Equivalent ingred
10、ients must be approved by AMS Committee “CE”3.2.1 Weigh parts to the nearest 0.1 gram.3.2.2 Weigh parts to the nearest 0.02 gram.3.3 Processing After the elastomer has banded on the rubber mill, premix the other ingredients and add to the milling compound.3.3.1 The stock shall not be allowed to beco
11、me hotter than can be handled with the bare hands.3.3.2 After all ingredients have been incorporated and the stock has been thoroughly milled, the stock shall be passed 10 times through a tight mill.3.3.3 Suitable preforms shall be cut from the freshly milled stock and molded into test slabs as spec
12、ified in ASTM D 3182, Figure 1.3.4 Properties Shall be as shown in Table 2.TABLE 2 - PROPERTIESParagraph Property Requirement Test Method3.4.1 Hardness, Durometer “A” or equivalent75 5ASTM D 22403.4.2 Tensile Strength, minimum 1600 psi(11.03 MPa)ASTM D 4123.4.3 Elongation, minimum 175% ASTM D 4123.4
13、.4 Specific Gravity 1.81 0.02 ASTM D 297, Hydrostatic Method3.4.5 Synthetic Lubricant Immersion AMS3085392 F 5(200 C 2)70 hours 0.53.4.5.1 Hardness Change, Durometer “A” or equivalent -15 to 0 ASTM D 22403.4.5.2 Tensile Strength Change, max -35% ASTM D 4123.4.5.3 Elongation Change, max -20% ASTM D 4
14、123.4.5.4 Volume Change, max 0 to +20% ASTM D 471Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3217/8 Page 3 of 34. QUALITY ASSURANCE PROVISIONS See AMS3217.5. PREPARATION FOR DELIVERY See AMS3217.6. ACKNOWLEDGMENT See AMS3217.7. REJECTIONS See AMS3217.8. NOTES See AMS3217.PREPARED BY AMS COMMITTEE “CE”Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
