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/AMS3217/4C AEROSPACE MATERIAL SPECIFICATION AMS3217/4 REV. C Issued 1983-07 Reaffirmed 1998-08
5、Revised 2017-02Superseding AMS3217/4B Test Slabs, Fluoroelastomer (FKM) 65 - 75 RATIONALE AMS3217/4C results from a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a standard fluoroelastomer (FKM) rubber stock in the form of molded test slabs. 1.2 Appli
6、cation See AMS3217. 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. 3.2 Material Shall be a
7、fluoroelastomer (FKM) compounded to the formulation shown in Table 1. SAE INTERNATIONAL AMS3217/4C Page 2 of 3 Table 1 - Formulation Ingredients Parts Viton E60Cor equivalent* 100.0 (see 3.2.1) Maglite Dor equivalent* 3.0 (see 3.2.2) Sterling MT, N990 or equivalent* (see 3.2.3) 20.0 (see 3.2.1) Calc
8、ium Hydroxide, Reagent Grade 6.0 (see 3.2.2) Press Cure: 10 minutes 0.5 minute at 175 C 3 C (347 F 5 F) Oven Cure: 24 hours 0.5 hour at 230 C 3 C (466 F 5 F) *Equivalent ingredients must be approved by SAE AMS Committee CE. 3.2.1 Weigh parts to the nearest 0.1 gram. 3.2.2 Weigh parts to the nearest
9、0.02 gram. 3.2.3 ASTM D1765 designation. 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 the bare hands. 3.3.2 After all ingredients have bee
10、n 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 Properties Shall be as shown in Table 2. Table 2 -
11、 Properties Paragraph Property Requirement Test Method 3.4.1 Hardness, Durometer “A” 70 5 ASTM D2240 3.4.2 Tensile strength, minimum 1500 psi (10.3 MPa) ASTM D412 3.4.3 Elongation, minimum 175% ASTM D412 3.4.4 Specific Gravity 1.83 0.02 ASTM D297 3.4.5 Synthetic Lubricant Immersion AMS3023 175 C 3 C
12、 (347 F 5 F) 70 hours 0.5 hour ASTM D471 3.4.5.1 Volume Change +14 to +22% SAE INTERNATIONAL AMS3217/4C 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 Indic
13、ator A change bar (l) 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 document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY AMS COMMITTEE “CE”
