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    SAE AMS 3217 8A-2017 Test Slabs Fluoroelastomer (FKM) 70-80 Hardness for Improved Gas Turbine Engine Oil Compatibility.pdf

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    SAE AMS 3217 8A-2017 Test Slabs Fluoroelastomer (FKM) 70-80 Hardness for Improved Gas Turbine Engine Oil Compatibility.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 there

    2、from, 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 p

    3、ublication 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: +1 724-776-497

    4、0 (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/AMS3217/8A AEROSPACE MATERIAL SPECIFICATION AMS3217 /8 REV. A Issued 2012-05 Revised 2017-10 Su

    5、perseding AMS3218/8 Test Slabs, Fluoroelastomer (FKM), 70-80 Hardness, for Improved Gas Turbine Engine Oil Compatibility RATIONALE AMS3217/8A results from a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a fluorocarbon (FKM) rubber stock in the form of

    6、 molded test slabs. 1.2 Application See AMS3217. Useful as a reference for evaluating compatibility to a variety of gas turbine engine oils, including higher thermo-oxidative stability (HTS) lubricants, including those conforming to MIL-PRF-23699 Class HTS, MIL-PRF-7808 Grade 4 and AS5780 Class HPC,

    7、 at elevated temperature (392 F / 200 C). 2. APPLICABLE DOCUMENTS See 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.

    8、2 Material Shall be a fluoroelastomer (FKM) compounded to the formulation shown in Table 1. SAE INTERNATIONAL AMS3217/8A Page 2 of 3 Table 1 - Formulation Ingredients Parts Viton GLT-600S or equivalent* 100.0 (see 3.2.1) Elastomag 170 or equivalent* 3.0 (see 3.2.2) Sterling MT, N990 or equivalent* (

    9、see 3.2.3) 30.0 (see 3.2.1) Diak 7 or equivalent* 3.0 (see 3.2.2) Varox DBPH-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 ingredients must be approved by AMS Committee “CE” 3.2.1 Weigh parts to the nearest 0

    10、.1 gram. 3.2.2 Weigh parts to the nearest 0.02 gram. 3.2.3 ASTM D1765, N990 Classification 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 become hotter than can be handled with th

    11、e 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 specified in ASTM D3182, Figure 1. 3.4

    12、Properties Shall be as shown in Table 2. Table 2 - Properties Paragraph Property Requirement Test Method 3.4.1 Hardness, Durometer “A” 75 5 ASTM D2240 3.4.2 Tensile Strength, minimum 1600 psi (11.03 MPa) ASTM D412 3.4.3 Elongation, minimum 175% ASTM D412 3.4.4 Specific Gravity 1.81 0.02 ASTM D297, H

    13、ydrostatic Method 3.4.5 Synthetic Lubricant Immersion ASTM D471* AMS3085 392 F 5 F (200 C 2 C) Time: 70 hours 0.5 hours 3.4.5.1 Hardness Change, Durometer “A” -15 to 0 ASTM D2240 3.4.5.2 Tensile Strength Change, max -35% 3.4.5.3 Elongation Change, max -20% 3.4.5.4 Volume Change, max 0 to +20% * Hard

    14、ness test per ASTM D2240. SAE INTERNATIONAL AMS3217/8A Page 3 of 3 4. QUALITY ASSURANCE PROVISIONS See AMS3217. 5. PREPARATION FOR DELIVERY See AMS3217. 6. ACKNOWLEDGMENT See AMS3217. 7. REJECTIONS See AMS3217. 8. NOTES See AMS3217. 8.1 Revision Indicator A change bar (l) located in the left margin

    15、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 document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and

    16、(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”


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