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 2013 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:/www.sae.org/technical/standards/AMS2417J AEROSPACE MATERIAL SPECIFICATION AMS2417 REV. J Issued 1960-06 Revised 2
5、013-09 Superseding AMS2417H Plating, Zinc-Nickel Alloy RATIONALE AMS2417J is issued to add control of stress relief heat treatment furnace equipment in accordance with AMS2750. NOTICE ORDERING INFORMATION: The following information shall be provided to the plating processor by the purchaser. 1. Purc
6、hase order shall specify not less than the following: AMS2417J Plating thickness, if other than specified in 3.4.2.3. Type and Grade designation. See 1.3. Basis metal to be plated Tensile strength or hardness of the basis metal Pre-plate stress relief to be performed by plating processor (time and t
7、emperature) if different from 3.1.1 Special features, geometry or processing present on parts that requires special attention by the plating processor Hydrogen embrittlement relief to be performed by plating processor (parameters or reference document) if different from 3.3 Minimum thickness on inte
8、rnal surfaces, if required. See 3.4.2.1. Optional: Periodic testing frequency (4.2.2) and sample quantity (4.3.2) Quantity 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
9、 performed after plating, could adversely affect the plated part. The sequencing of these types of operations should be specified by the cognizant engineering organization or purchaser and is not controlled by this specification. SAE INTERNATIONAL AMS2417J Page 2 of 9 1. SCOPE 1.1 Purpose This speci
10、fication covers the requirements for electrodeposition of a zinc-nickel alloy and the properties of the deposit. 1.2 Application Zinc-nickel plating has been used typically to provide corrosion resistance to steel parts that may operate at elevated temperatures (See 1.3) but usage is not limited to
11、such applications. See 8.9 and 8.10. 1.3 Classification Plating covered by this specification is classified as follows: Type 1 As-plated without supplementary treatment, service temperature 500 F (260 C) max. Type 2 As-plated with supplementary chromate treatment Grade A Hexavalent chromate treatmen
12、t, service temperature 250 F (121 C) max. Grade B Trivalent chromium treatment, service temperature 375 F (191 C) max. Type 3 As-plated with supplementary phosphate treatment (Adhesion base for primer/paint), service temperature 350 F (177 C) max. 1.3.1 Unless a type is specified, Type 2 shall be su
13、pplied. 1.3.2 For Type 2 plating, if no grade is specified, Grade A shall be supplied. 1.4 Safety - Hazardous 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 addr
14、ess the hazards that 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 materials and to take the necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENT
15、S 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 revision of a document unless a specific document issue is specified. When the referenced document has been canc
16、elled 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, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.
17、 AMS2750 Pyrometry AMS2759/9 Hydrogen Embrittlement Relief (Baking) of Steel Parts AS2390 Chemical Process Test Specimen Material SAE INTERNATIONAL AMS2417J Page 3 of 9 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Te
18、l: 610-832-9585, www.astm.org. ASTM B 117 Practice for Operating Salt Spray (Fog) Apparatus ASTM B 253 Guide for Preparation of Aluminum Alloys for Electroplating ASTM B 487 Test Method for Measurement of Metal and Oxide Coating Thicknesses by Microscopical Examination of a CrossSection ASTM B 499 T
19、est Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals ASTM B 504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method ASTM B 568 Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
20、 ASTM B 571 Test Methods for Adhesion of Metallic Coatings ASTM E 376 Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Examination Methods ASTM F 519 Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments
21、 3. TECHNICAL REQUIREMENTS 3.1 Preparation 3.1.1 Stress Relief Treatment 3.1.1.1 Furnaces used for stress relief shall be controlled per AMS2750. The minimum requirements shall be Class 5, with Type D Instrumentation. 3.1.1.2 All steel parts having a hardness of 40 HRC and above and that are machine
22、d, ground, cold formed or cold straightened after heat treatment shall be cleaned to remove surface contamination and thermally stress relieved before plating. (Residual tensile stresses have been found to be damaging during electrofinishing.) Temperatures to which parts are heated shall be such tha
23、t stress relief is obtained while still maintaining hardness of parts within drawing limits. Unless otherwise specified, the following treatment temperatures and times shall be used: 3.1.1.2.1 For parts, excluding nitrided parts, having a hardness of 55 HRC and above, including carburized and induct
24、ion hardened parts, stress relieve at 275 F 25 (135 C 14) for 5 to 10 hours. 3.1.1.2.2 For parts having a hardness less than 55 HRC, and all nitrided parts, stress relieve at 375 F 25 (191 C 14) for a minimum of 4 hours. Higher temperatures may be used only when specified or approved by the cognizan
25、t engineering organization. 3.1.1.2.3 For peened parts: If stress relief temperatures above 375 F (191 C) are elected, the stress relief shall be performed prior to peening or the cognizant engineering organization shall be consulted and shall approve the stress relief temperature. 3.1.2 The plating
26、 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. SAE INTERNATIONAL AMS2417J Page 4 of 9 3.1.3 Except for barrel plating, electrical contact points shall be
27、 as follows. For parts which are to be plated all over, locations shall be acceptable to the purchaser. For parts which are not to be plated all over, locations shall be in areas on which plating is not required, or locations shall be specified or approved by the cognizant engineering organization.
28、3.1.4 Mechanical surface preparation, such as a dry or wet abrasive blast, if employed, shall be completed prior to application of a strike such as nickel, copper or zinc, when used, and shall be accomplished in a manner that will not have a detrimental effect on the appearance or quality of the fin
29、ished part. 3.2 Procedure 3.2.1 Parts shall be plated by electrodeposition of a zinc-nickel alloy plating onto a properly prepared surface. See 8.5.1. 3.2.1.1 Aluminum alloys shall be zincate treated in accordance with ASTM B 253 or other method permitted by the cognizant engineering organization pr
30、ior to plating. 3.2.1.2 Parts for which Type 2 plating is specified shall be given a supplementary chromate conversion coating and meet the requirements of 3.4.4.2. Any post thermal treatment shall be done prior to application of the chromate conversion treatment. Steel parts requiring a post therma
31、l treatment as in 3.3 may require reactivation prior to application of the conversion coating. 3.2.1.3 Parts for which Type 3 plating is specified shall, after hydrogen embrittlement relief baking, be given a supplementary zinc phosphate conversion coating and meet the requirements of 3.4.4.3. Steel
32、 parts requiring post thermal treatment as in 3.3 may require reactivation prior to application of the conversion coating. 3.2.1.4 Parts for which Type 2 Grade B plating is specified shall be given a supplementary trivalent chromium conversion coating and meet the requirements of 3.4.4.4. Any post t
33、hermal treatment shall be done after application of the trivalent chromium conversion treatment. 3.2.2 Spotting-in and double plating are prohibited. See 8.2.1. 3.3 Hydrogen Embrittlement Relief Treatment of steel parts shall be in accordance with AMS2759/9. 3.4 Properties Zinc-nickel alloy plate sh
34、all conform to the following requirements. 3.4.1 Composition The zinc-nickel alloy plate shall contain 6 to 20% nickel and the balance essentially zinc, determined by a method acceptable to purchaser. Composition testing for Types 2 and 3 apply prior to conversion coating. 3.4.2 Thickness shall be d
35、etermined on representative parts or test panels in accordance with any of the following methods as applicable: ASTM B 487, ASTM B 499, ASTM B 504, ASTM B 568, ASTM E 376, or other method permitted by the cognizant engineering organization. Thickness requirements for Types 2 and 3 apply prior to con
36、version coating. 3.4.2.1 All surfaces of the part, except those which cannot be touched by a sphere 0.75 inch (19 mm) in diameter, shall be plated to the specified thickness. Unless otherwise specified, surfaces such as holes, recesses, threads and other areas where a controlled deposit cannot be ob
37、tained under normal plating conditions, may be under the specified limit provided they show visual plating coverage. 3.4.2.2 Strike When applied, shall be 0.0001 inch (2.5 m) maximum. See 8.5.1. SAE INTERNATIONAL AMS2417J Page 5 of 9 3.4.2.3 Zinc-nickel alloy plate, unless otherwise specified 3.4.2.
38、3.1 Parts without external threads (other than washers) shall have total plate thickness of 0.0003 to 0.0007 inch (8 to 18 m). 3.4.2.3.2 Washers and parts with external threads shall have total plate thickness of 0.0002 to 0.0004 inch (5 to 10 m). 3.4.3 Adhesion shall meet the requirements of ASTM B
39、 571 by the Bend Test method using a 4T mandrel. 3.4.4 Corrosion Resistance 3.4.4.1 Type 1-plated parts, or representative specimens, plated to a thickness of 0.0004 to 0.0007 inch (10 to 18 m) shall show no visual evidence of red corrosion on the basis metal in controlled thickness areas, determine
40、d after exposure for 500 hours to salt spray corrosion test conducted in accordance with ASTM B 117. See 4.3.3.2. 3.4.4.2 Type 2, Grade A-plated parts, or representative specimens, plated to a thickness of 0.0004 to 0.0007 inch (10 to 18 m) shall show no visual evidence of white corrosion product af
41、ter 96 hours and no evidence of red corrosion on the basis metal in controlled thickness areas after 500 hours, determined after exposure to salt spray corrosion testing in accordance with ASTM B 117. See 4.3.3.2. 3.4.4.3 Type 3-plated parts (or representative specimens) that have received a supplem
42、entary coating shall not show smut, powder, or white stains. (Corrosion test not required; visual requirement only. See 3.5 and 4.2.2.) 3.4.4.4 Type 2, Grade B-plated parts, or representative specimens, plated to a thickness of 0.0004 to 0.0007 inch (10 to 18 m) shall show no visual evidence of whit
43、e corrosion product after 96 hours and no evidence of red corrosion on the basis metal in controlled thickness areas after 500 hours, determined after exposure to salt spray corrosion testing in accordance with ASTM B 117. See 4.3.3.2. 3.4.5 Hydrogen Embrittlement The plating process after baking sh
44、all not cause hydrogen embrittlement in steel parts 36 HRC and over, determined in accordance with 4.3.3.3. 3.5 Quality Plating, as received by purchaser, shall be smooth, continuous, adherent to the basis metal, and visually free from porosity, blisters, nodules, pits, and other imperfections detri
45、mental to performance of the plating. Slight staining or discoloration is permissible. Type 3 phosphate conversion coating shall be uniform in texture, evenly deposited, and medium gray to black in color. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The processor shall supply al
46、l samples for processors tests and shall be responsible for the performance of all required tests. When parts are to be tested, the parts shall be supplied by purchaser. The cognizant engineering organization reserves the right to sample and to perform any confirmatory tests deemed necessary to ensu
47、re that processing conforms to the specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Thickness (3.4.2) and quality (3.5) are acceptance tests and shall be performed on parts, or specimens representing parts when permitted herein from each lot. See 4.3.3. SAE INTERNATIONAL AM
48、S2417J Page 6 of 9 4.2.2 Periodic Tests Composition (3.4.1) is a periodic test and shall be performed at least quarterly unless frequency of testing is specified by the cognizant engineering organization. Adhesion (3.4.3) is a periodic test that shall be performed no less than daily for each generic
49、 class of alloy as defined by AS2390 processed during that day. Corrosion resistance (white corrosion product only) (3.4.4.2 or 3.4.4.4) is a periodic test and shall be performed at least monthly unless frequency of testing is specified by the cognizant engineering organization. Corrosion resistance (red corrosion) (3.4.4.1, 3.4.4.2, or 3.4.4.4) is a periodic test and shall be performed at leas
