SAE-AMS-2423D-2002-R2009.pdf
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1、Plating, Nickel Hard Deposit RATIONALE This document has been reaffirmed to comply with the SAE 5-year Review policy. 1.SCOPE: 1.1Purpose: This specification covers the engineering requirements for electrodeposition of a hard nickel and the properties of the deposit. 1.2Application: This process has
2、 been used typically to provide good wear resistance to metal parts which may operate in service up to 450 F (232 C), but usage is not limited to such applications. Diffusion heat treatment of the deposit is not required. 1.3Safety - Hazardous Materials: While the materials, methods, applications, a
3、nd processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous mate
4、rials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. AEROSPACE MATERIAL SPECIFICATION AMS 2423D Issued 1962-06 Revised2002-04 Reaffirmed 2009-04 Superseding AMS 2423C (R) SAE Technical Standards Board Rules provide that: “ This report is publi
5、shed 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 2009 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any for
7、m 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: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/w
8、ww.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS2423D AMS 2423DSAEAMS 2423D - 2 - 2.APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specif
9、ication 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 canceled and no superseding document has been specified, the last published issue of that document shall apply. 2.
10、1SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org. AMS 2759/9Hydrogen Embrittlement Relief (Baking) of Steel Parts 2.2ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org. ASTM B 253Prepa
11、ration of Aluminum Alloys for Electroplating ASTM B 487Measurement of Metal and Oxide Coating Thicknesses by Microscopical Examination of a Cross Section ASTM B 504Measurement of Thickness of Metallic Coatings by the Coulometric Method ASTM B 530Measurement of Coating Thicknesses by the Magnetic Met
12、hod: Electrodeposited Nickel Coatings on Magnetic and Nonmagnetic Substrates ASTM B 567Measurement of Coating Thickness by the Beta Backscatter Method ASTM B 568Measurement of Coating Thickness by X-Ray Spectrometry ASTM B 571Adhesion of Metallic Coatings ASTM B 578Microhardness of Electroplated Coa
13、tings ASTM B 636Measurement of Internal Stress of Plated Metallic Coatings with the Spiral Contractometer ASTM E 92Vickers Hardness of Metallic Materials ASTM E 376Measurement of Coating Thickness by Magnetic or Eddy Current (Electromagnetic) Test Method 3.TECHNICAL REQUIREMENTS: 3.1Preparation: 3.1
14、.1Steel parts having hardness higher than 40 HRC and which have been ground after heat treatment shall be cleaned to remove surface contamination and suitably stress-relieved before preparation for plating. Temperatures to which parts are heated shall be such that maximum stress relief is obtained w
15、ithout reducing hardness of parts below drawing limits but, unless otherwise specified, not less than 275 F (135 C) for not less than five hours for parts having hardness of 55 HRC or higher or not less than 375 F (191 C) for not less than four hours for other parts. -,-,- AMS 2423DSAEAMS 2423D - 3
16、- 3.1.2Parts shall have clean surfaces, free of water break, prior to immersion in the plating solution. 3.1.2.1Alkaline cleaning of steel parts may be done with anodic current, but steel part shall not be cathodically cleaned. 3.1.3Parts shall be within drawing limits after plating and machining. 3
17、.1.4Except for barrel plating, electrical contact points shall be as follows. For parts which are to be plated all over, locations shall be acceptable to purchaser; for parts which are not to be plated all over, locations shall be in areas on which plating is not required. 3.2Procedure: 3.2.1Nickel
18、shall be electrodeposited from a chloride, sulfate/chloride, sulfamate or other suitable plating solution containing addition agents to produce the specified hardness. Nickel shall be deposited directly on the basis metal without a prior flash coating of metal other than nickel, except that a prelim
19、inary chemical coating, immersion plate, and/or metal flash is permissible on aluminum, magnesium, and their alloys. 3.2.1.1Aluminum alloys may be zincate treated in accordance with ASTM B 253 before plating. 3.2.2The plated parts shall be removed from the plating solution, thoroughly rinsed, and dr
20、ied. 3.3Post Treatment: Hydrogen embrittlement relief shall be in accordance with AMS 2759/9. 3.4Properties: Plating shall conform to the following requirements: 3.4.1Thickness: Shall be as specified, determined on representative parts or test panels in accordance with ASTM B 487, ASTM B 504, ASTM B
21、 530, ASTM E 567, ASTM B 568, ASTM E 376, or other method acceptable to purchaser. 3.4.1.1The plate shall be substantially uniform in thickness on significant surfaces except that slight build-up at exterior corners or edges will be permitted provided finished drawing dimensions are met. 3.4.1.2Thic
22、kness requirements apply to surfaces that can be touched by a sphere 0.75 inch (19 mm) in diameter. Other areas such as surfaces of holes, recesses, internal threads, or contact areas of parts plated all over, where a controlled deposit cannot be obtained under normal plating conditions, shall show
23、evidence of plating. 3.4.2Hardness: Shall be not lower than 400 HV or equivalent, determined in accordance with ASTM E 92 or ASTM B 578, on deposits 0.004 inch (0.10 mm) and over in thickness. -,-,- AMS 2423DSAEAMS 2423D - 4 - 3.4.3Stress: Shall be within the range 0 to 15.0 ksi (0 to 103 MPa) in co
24、mpression, determined on a plate thickness of 0.0003 inch (7.5 m) by calculation from spiral contractometer reading in accordance with ASTM B 636 or other instrument acceptable to purchaser. 3.4.4Adhesion: Specimens as in 4.3.3 shall not show separation of the plating from the basis metal, when exam
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