SAE-AMS-2402J-2007.pdf
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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 theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication ma
3、y 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: 724-776-4970 (outside USA)
4、Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org AMS 2402J AEROSPACE MATERIAL SPECIFICATION Issued DEC 1942 Revised APR 2007 Superseding AMS 2402H Plating, Zinc RATIONALE AMS 2402H is a Five Year Review and update of this specification. NOTICE ORDERING INFORMATION: The foll
5、owing information shall be provided to the plating processor by the purchaser. 1) Purchase order shall specify not less than the following: AMS 2402J Plating thickness desired (see 3.4.1) Basis metal to be plated Tensile strength or hardness of the basis metal Pre-plate stress relief to be performed
6、 by plating processor (time and temperature) if different from 3.1.2 Special features, geometry or processing present on parts that requires special attention by the plating processor such as may be required by 3.4.1.4. Hydrogen embrittlement relief to be performed by plating processor (parameters o
7、r reference document) if different from 3.3 Minimum thickness on internal surfaces, if required (see 3.4.1.4) Optional: Sample quantity and frequency of periodic testing (see 4.2.2 and 4.3.2) Whether approval is based on approval of process/control factors or sample part or both (see 4.4.1) Quantity
8、 of pieces to be plated 2) Parts manufacturing operations such as heat treating, forming, joining and media finishing can affect the condition of the substrate for plating, or if performed after plating, could adversely affect the plated part. The sequencing of these types of operations should be sp
9、ecified by the cognizant engineering organization or purchaser and is not controlled by this specification. Unless otherwise specified on the engineering drawing, high strength steel parts having a hardness of 45 HRC or greater shall not be electroplated. Copyright SAE International Provided by IHS
10、under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:40:36 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE AMS 2402J - 2 - 1. SCOPE 1.1 Purpose This specification covers the requirements for electrodeposited zinc plating. Unless oth
11、erwise stated on the engineering drawing, high strength steel parts having a hardness of 45 HRC or greater shall not be electroplated. 1.2 Application This process has been used typically to provide corrosion resistance to metal parts, but usage is not limited to such applications. 1.3 Safety-Hazard
12、ous Materials While the materials, methods, applications, and 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 fam
13、iliarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this speci
14、fication 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 published issue of that document shall apply.
15、2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2759/9 Hydrogen Embrittlement Relief (Baking) of Steel Parts 2.2 ASTM Publications Available from ASTM I
16、nternational, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 117 Operating Salt Spray (Fog) Testing Apparatus ASTM B 253 Preparation of Aluminum Alloys for Electroplating ASTM B 487 Measurement of Metal and Oxide Coating Thicknesses by
17、 Microscopical Examination of a Cross Section ASTM B 499 Measurement of Coating Thicknesses by the Magnetic Method; Nonmagnetic Coatings on Magnetic Basis Metals ASTM B 504 Measurement of Thickness of Metallic Coatings by the Coulometric Method ASTM B 555 Measurement of Electrodeposited Metallic Coa
18、ting Thicknesses by the Dropping Test ASTM B 567 Measurement of Coating Thickness by the Beta Backscatter Method ASTM B 568 Measurement of Coating Thickness by X-Ray Spectrometry ASTM B 571 Adhesion of Metallic Coatings ASTM E 376 Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electr
19、omagnetic) Test Methods ASTM F 519 Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:40:36 MSTNo reproduction or networking
20、permitted without license from IHS -,-,- SAE AMS 2402J - 3 - 3. TECHNICAL REQUIREMENTS 3.1 Preparation 3.1.1 Parts shall be within drawing dimension limits before plating, except as specified in 3.1.1.1. 3.1.1.1 Parts having part numbers with the prefix MA, AN, MS, or AS or parts where the drawing s
21、pecifies dimensions apply after plating shall be made to such dimensions that parts will be within drawing limits after plating. Undercutting before plating shall not be permitted unless specifically authorized by specifications referenced or the applicable drawing. 3.1.2 Steel parts having hardness
22、 higher than 36 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 without reducing hardness of p
23、arts below drawing limits but, unless otherwise specified, not less than 275 F (135 C) for not less than five hours for parts with hardness of 55 HRC or over, or not less than 375 F (191 C) for not less than four hours for other parts. 3.1.3 Any specified residual compressive stress-inducing operati
24、ons, such as shot peening, shall follow stress relieving but precede plating. 3.1.4 The plating shall be applied over a surface free from water breaks. The cleaning procedure shall not produce pitting or intergranular attack of the basis metal and shall preserve dimensional requirements. 3.1.5 Excep
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