1、 AMS 2451/2A AEROSPACE MATERIAL SPECIFICATION Plating, Brush, Nickel Low Stress, Hard Deposit RATIONALE This specification revision was issued as part of the SAE Five Year Review process. 1. SCOPE 1.1 Purpose This specification covers the requirements and process controls for brush plating of hard,
2、low stress nickel by electrodeposition. 1.2 Application This process has been used typically to improve wear resistance and to repair damaged, worn, or mismachined parts in applications requiring hardness, fatigue resistance, and service at temperatures up to 450 F (232 C) but usage is not limited t
3、o such applications. 1.3 Safety - Hazardous Materials See AMS 2451. 2. APPLICABLE DOCUMENTS See AMS 2451. 3. TECHNICAL REQUIREMENTS See AMS 2451. 3.1 Procedure 3.1.1 Nickel shall be electrodeposited from a sulfamate nickel brush plating solution containing addition agents to produce the specified ha
4、rdness in accordance with instructions from the solution manufacturer. 3.2 Properties 3.2.1 Adhesion to Specimens The requirements of AMS 2451 shall apply. Issued 1998-07 Revised 2006-06Reaffirmed 2011-04 Superseding AMS 2451/2 SAE Technical Standards Board Rules provide that: “This report is publis
5、hed 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 therefrom, is the sole responsibility of the user.” SAE reviews each technical
6、report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form
7、 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: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:
8、/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS2451/2A SAE AMS 2451/2A - 2 - 3.2.2 Hardness The hardness of the deposit shall be no less than 500 HV or equivalent. 3.2.3 Stress The residual surface compressive s
9、tress in the deposit shall be within the range of 0 to 15.0 ksi (0 to 103 Mpa). 4. QUALITY ASSURANCE PROVISIONS See AMS 2451. 5. PREPARATION FOR DELIVERY See AMS 2451. 6. ACKNOWLEDGMENT See AMS 2451. 7. REJECTIONS See AMS 2451. 8. NOTES See AMS 2451. 8.1 Plating meeting the requirements of this specification will meet the performance requirements of AMS 2423. 8.2 Hardness conversion tables for metals are presented in ASTM E 140. 8.3 Key Words Brush plating, Selective plating, low-stress plate, hard deposit, worn parts, mismachined parts, sulfamate nickel PREPARED BY AMS COMMITTEE “B”
