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/AMS2451/8B AEROSPACE MATERIAL SPECIFICATION AMS2451 /8 REV. B Issued 2000-08 Reaffirmed 2011-04
5、 Revised 2017-04 Superseding AMS2451/8A Plating, Brush, Non-Cyanide Silver General Purpose RATIONALE AMS2451/8B is a Five-Year Review and update of this specification with a change to 3.3. 1. SCOPE 1.1 Purpose This specification covers the requirements for brush plating of non-cyanide silver by elec
6、trodeposition. 1.2 Application This process has been used typically to lower electrical contact resistance, prevent galling or seizing of surfaces of parts to improve corrosion resistance of steel parts, and to repair silver deposits but usage is not limited to such applications. 1.3 Safety - Hazard
7、ous 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 the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent
8、 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 published issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive,
9、 Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2412 Plating, Silver Copper Strike, Low Bake SAE INTERNATIONAL AMS2451/8B Page 2 of 2 3. TECHNICAL REQUIREMENTS Shall be in accordance with AMS2451 and as follows: 3.1 Procedure 3.
10、1.1 Silver shall be electrodeposited from a non-cyanide silver brush plating solution in accordance with processing instructions from the solution manufacturer. 3.1.2 A preliminary strike or bonding layer of nickel and copper, palladium or gold may be used. 3.2 Properties 3.2.1 Thickness Where silve
11、r flash is specified, plate thickness shall be approximately 0.0001 inch (2.5 mm). 3.3 Hydrogen Embrittlement Shall be in accordance with AMS2451. 4. QUALITY ASSURANCE PROVISIONS Shall be in accordance with AMS2451. 5. PREPARATION FOR DELIVERY Shall be in accordance with AMS2451. 6. ACKNOWLEDGMENT S
12、hall be in accordance with AMS2451. 7. REJECTIONS Shall be in accordance with AMS2451. 8. NOTES Shall be in accordance with AMS2451. 8.1 Plating meeting the requirements of this specification will exhibit equivalent properties to plating produced in accordance with AMS2412K. 8.2 Revision Indicator A
13、 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”
