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/AMS2451/3C AEROSPACE MATERIAL SPECIFICATION AMS2451 /3 REV. C Issued 1998-07 Revised 2017-11 Su
5、perseding AMS2451/3B Plating, Brush, Nickel Low Stress, Low-Hardness Deposit RATIONALE AMS2451/3C is the result of a Five-Year Review with a change to paragraph 3.2.5 hydrogen embrittlement. 1. SCOPE 1.1 Purpose This specification covers the requirements for brush plating of low-hardness, low-stress
6、 nickel by electrodeposition. 1.2 Application This process has been used typically to improve the corrosion and oxidation resistance of steel alloys, to repair damaged, worn, or mismachined parts requiring low residual surface stress, to prepare surfaces for brazing, and to repair nickel electrodepo
7、sits on parts with service a temperature up to 700 F (371 C) but is not limited to such applications. 1.3 Safety - Hazardous Materials Shall be in accordance with AMS2451. 2. APPLICABLE DOCUMENTS In addition to those listed in AMS2451, the issue of the following documents in effect on the date of th
8、e 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 specified, the last pub
9、lished issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2424 Plating, Nickel, Low-Stressed Deposit SAE INTERNATIONA
10、L AMS2451/3C Page 2 of 3 3. TECHNICAL REQUIREMENTS Shall be in accordance with AMS2451 and as follows. 3.1 Procedure 3.1.1 Nickel shall be electrodeposited from a sulfamate nickel brush plating solution in accordance with instructions from the solution manufacturer. The plating solution shall contai
11、n no addition agents, including stress-reducing agents, which might have a detrimental effect on properties of the plate or of the basis metal. 3.2 Properties 3.2.1 Adhesion to Specimens The requirements of AMS 2451 shall apply. 3.2.2 Hardness The hardness of the deposit shall be no greater than 300
12、 HV, or equivalent. 3.2.3 Stress The residual stress in the deposit shall be within the range of 5 ksi (34.5 MPa) compressive, to 15.0 ksi (103 MPa) tensile. 3.2.4 Heat Resistance The requirements of AMS 2451 shall apply. 3.2.5 Hydrogen Embrittlement Shall be in accorddnace with AMS2451. 3.2.6 Corro
13、sion Resistance The requirements of AMS 2451 shall apply except as follows. Specimens shall be plated to a thickness of 0.0003 to 0.0006 inches (8 to 16 m). The post-plating treatment shall be that of the heat resistance test or the hydrogen embrittlement relief treatment. 4. QUALITY ASSURANCE PROVI
14、SIONS Shall be in accordance with AMS2451. 5. PREPARATION FOR DELIVERY Shall be in accordance with AMS2451. 6. ACKNOWLEDGMENT Shall be in accordance with AMS2451. 7. REJECTIONS Shall be in accordance with AMS2451. SAE INTERNATIONAL AMS2451/3C Page 3 of 3 8. NOTES See AMS2451 and as follows. 8.1 Plat
15、ing meeting the requirements of this specification will meet the performance requirements of AMS2424. 8.2 Revision Indicator 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 “B”
