ImageVerifierCode 换一换
格式:PDF , 页数:7 ,大小:80.96KB ,
资源ID:752589      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-752589.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(FORD WSS-M21P52-A1-2018 FASTENER FINISH ELECTROPLATED ZINC TRIVALENT CHROMIUM PASSIVATE SILVER IRIDESCENT TO BE USED WITH FORD WSS-M99P1111-A .pdf)为本站会员(brainfellow396)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

FORD WSS-M21P52-A1-2018 FASTENER FINISH ELECTROPLATED ZINC TRIVALENT CHROMIUM PASSIVATE SILVER IRIDESCENT TO BE USED WITH FORD WSS-M99P1111-A .pdf

1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 01 2018 05 25 Revised See Summary of Revisions G. Weber, NA 2013 03 22 Released G. Weber, NA Controlled document at www.MATS Copyright 2018, Ford Global Technologies, LLC Page 1 of 7 FASTENER FINISH, ELECTROPLATED ZINC, TRIVALENT WSS-M21P

2、52-A1 CHROMIUM PASSIVATE, SILVER IRIDESCENT FASTENER FINISH, ELECTROPLATED ZINC, TRIVALENT WSS-M21P52-A2 CHROMIUM PASSIVATE, LUBRICATED TOPCOAT SEALER, SILVER FASTENER FINISH, MECHANICAL ZINC, TRIVALENT WSS-M21P52-A3 CHROMIUM PASSIVATE, LUBRICATED TOPCOAT SEALER, SILVER-GREY FASTENER FINISH, ELECTRO

3、PLATED ZINC, TRIVALENT WSS-M21P52-A4 CHROMIUM PASSIVATE, LUBRICATED TOPCOAT SEALER, ENHANCED LUBRICITY, SILVER 1. SCOPE The materials defined by these specifications are corrosion protective coatings over steel and iron substrates. All consist of electrolytic or non-electrolytic zinc plating with tr

4、ivalent chromium passivate. A2, A3 and A4 are also coated with a clear sealer to increase corrosion resistance and/or to provide consistent torque-tension control. 2. APPLICATION These specifications were released for materials used as corrosion protective coatings for fasteners and other standard p

5、arts used throughout the vehicle. Some of the processes used to produce these coatings may induce hydrogen embrittlement in parts with high hardness. Parts identified as being at risk for hydrogen embrittlement shall meet the requirements of WSS-M99A3-A. A1: Corrosion resistance for non-threaded fas

6、teners which subsequently receive an adhesive coating, and for non-threaded standard parts with lower corrosion requirements A2: Corrosion resistance plus lubrication for threaded fasteners A3: Corrosion resistance plus lubrication for threaded fasteners with high hardness and the risk of hydrogen e

7、mbrittlement A4: Corrosion resistance plus enhanced lubrication for threaded fasteners such as thread forming screws for metal 2.1 SERVICE APPLICATION 2.1.1 The recommended maximum continuous service temperature is 120C for optimal corrosion performance. 2.1.2 These coatings exhibit electrical conti

8、nuity to the substrate and may be used for electrical grounding fasteners in body-in-white or interior applications. 2.1.3 These coatings are effective for slowing galvanic corrosion associated with the use of steel fasteners in direct contact with aluminum components, or in indirect contact with ma

9、gnesium components. 2.1.4 These coatings are not recommended for high visibility applications, severe abrasion conditions or where chip resistance is required. ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 2018, Ford Global Technologies, LLC Page 2 of 7 3. REQUIREMENTS 3.1 APPROVED M

10、ATERIALS This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available extern

11、ally through a Ford Materials Engineer. 3.2 EMBRITTLEMENT Parts coated to this specification shall be free from the detrimental effects of hydrogen embrittlement or other factors which result in part brittleness. All parts shall meet the requirements of WSS-M99A3-A. 3.3 COATING APPLICATION 3.3.1 App

12、licators shall follow material supplier procedures and recommendations for chemical usage, equipment, analysis, and processing. Applicators must have documentation to show that procedures and recommendations are being followed. 3.3.2 Part cleanliness prior to coating is critical in achieving optimal

13、 adhesion of the coating. The substrate shall be free of oil, dirt, and similar foreign materials. If a cleaning process is necessary, it shall have no detrimental effect on the substrate, including freedom from embrittlement. This is especially important for parts with hardness greater than HRC 35.

14、 See WSS-M99A3-A. 3.3.3 The sealers used under this specification do not require curing. The sealers shall be dried in place using hot air, typically in a spin dryer. Drying on a conveyer and other drying methods may be appropriate. 3.3.4 The applicator shall follow the material suppliers recommenda

15、tions concerning the drying temperature and spin speeds suitable for the basket diameter being used. 3.3.5 The temperatures associated with de-embrittlement heat treatments can cause degradation of the passivates and sealers. Parts with hardness greater than HRC 35, for example washers, requiring an

16、 electroplated finish should be passivated and sealed after de-embrittlement heat treatment. 3.4 COATING APPEARANCE 3.4.1 The finishes will be smooth, fine grained, adherent, and free from blisters, pits, nodules, indications of burning, and other defects. All details of workmanship shall conform to

17、 the best practice for high quality plating. 3.4.2 Parts coated to A1 will have a silver iridescent color, A2 and A4 will have a silver color, and A3 will have a silver-grey color. 3.4.3 The sealers used for A2, A3 and A4 will be a translucent film free from discontinuities. 3.4.4 The sealers used f

18、or A2, A3 and A4 have a UV light visible tracer. ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 2018, Ford Global Technologies, LLC Page 3 of 7 3.5 COATING PROPERTIES 3.5.1 Thickness (ASTM B659 / ASTM B487) 3.5.1.1 The zinc layer shall have a thickness of 8 to 14 micrometers measured

19、on flat surfaces. In case of dispute, the thickness measurement umpire method shall be metallographic sectioning per ASTM B487. 3.5.1.2 The passivate layer thickness is not subject to measurement but will be less than 500 nanometers and greater than 200 nanometers. 3.5.1.3 The sealer layer thickness

20、 is not subject to measurement but will be less than 2 micrometers and greater than 0.5 micrometers. The thickness shall be sufficient to meet the corrosion requirements of the substrate material as well as the friction requirements. 3.5.1.4 The typical overall thickness of these coatings is 10 to 1

21、2 micrometers. 3.5.2 Adhesion (ASTM B 571) The coating shall withstand normal handling, storage, and installation without flaking or peeling or other loss of adhesion. In addition, there shall be no blistering or flaking after baking for hydrogen de-embrittlement. Adhesion of the plating to the base

22、 metal must conform to the requirements of one of the following test methods per ASTM B 571 unless otherwise indicated. 3.5.2.1 Heat Quench Test There shall be no blistering or chipping of the finish after heating coated parts to 220 +/- 5C for 30 +/- 5 minutes and quenching in water at room tempera

23、ture. 3.5.2.2 Burnishing Test No blistering, lifting, or peeling of the finish from the substrate is permitted following the burnishing test. 3.5.3 Torque Tension Performance (WZ101, Test Program B, M10x1.5 PC 8.8 surrogate bolt, S437-coated nut, WX100 washer, 25.3 kN tension) When tested in accorda

24、nce with Ford Worldwide Fastener Standard WZ101, coated fasteners shall have a friction coefficient within +/- 0.03 of the nominal value below: WSS-M21P52-A2 0.15 WSS-M21P52-A3 0.15 WSS-M21P52-A4 0.08 ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 2018, Ford Global Technologies, LLC P

25、age 4 of 7 3.6 RESISTANCE PROPERTIES 3.6.1 Laboratory Accelerated Cyclic Corrosion Test (CETP 00.00-L-467) Non-Ferrous Corrosion Ferrous Corrosion WSS-M21P52-A1 1 weeks 2 weeks WSS-M21P52-A2 2 weeks 4 weeks WSS-M21P52-A3 2 weeks 3 weeks WSS-M21P52-A4 2 weeks 4 weeks Testing shall be done on coated p

26、arts whenever possible (not panels). Parts for testing shall have no visible non-ferrous corrosion products at the beginning of testing. Parts shall be tested in vehicle orientation. Failure is constituted by evidence of corrosion products on surfaces directly visible in the application on the vehic

27、le, or rundown of corrosion products onto directly visible surfaces, at the specified test interval. Evaluation shall be done without magnification at a normal reading distance. 3.6.1.1 Potential Assembly Damage Assembly of components onto a vehicle can result in damage to the coating. Where possibl

28、e, assembly damage should be simulated prior to the start of corrosion testing. 3.6.1.2 Exceptions Depending upon vehicle location of the part, exceptions to this requirement may apply. Any exceptions are listed in Global Engineering Standard for Total Vehicle Corrosion Resistance, 18-0040 (RQT-0011

29、01-002492), and illustrated in the appended photo evaluation guide. 3.6.2 Water Resistance 240 hours (FLTM Bl 104-01) The finish shall not blister or show any signs of ferrous corrosion. Adhesion shall meet the requirements in section 3.5.2. 3.6.3 Fluid Resistance (FLTM BI 168-01, Method A, Gasoline

30、, Diesel, Coolant, Engine Oil, Transmission Fluid and Brake Fluid, other fluids as appropriate for application) The finish shall not blister or show any signs of softening or dulling. Adhesion shall meet the requirements in section 3.5.2. 3.7 THREAD ACCEPTANCE REQUIREMENTS (WA900, WE900, WX100) For

31、thread acceptance requirements see Ford Worldwide Fastener Standards WA900, WE900 and WX100. 3.8 FORMABILITY Standard Parts such as brackets, stampings, etc. that will be post formed following processing shall follow coating manufacturers approved procedures; such as, ISO 8401-1986 (E) cylindrical m

32、andrel bending ensuring bendability, must be used and results recorded. ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 2018, Ford Global Technologies, LLC Page 5 of 7 3.9 PROCESS CONTROL ITEMS Control items must be run as specified in Table 1 and control of these items must be represe

33、nted in the PFMEA and control plan. After review and sign-off of the control documents (PFMEA, CP and SPC data) for a significant number of lots, the frequency of the testing can be reduced as agreed upon by the Fastener Engineering representative. Other testing in this specification is for initial

34、approval or on an “as requested” basis and is not required for annual recertification. 3.9.1 Neutral Salt Spray Corrosion Test (SAE/USCAR-1, ASTM B 117) Non-Ferrous Corrosion Ferrous Corrosion As-Processed Baked As-Processed Baked WSS-M21P52-A1 72 h 48 h 240 h 240 h WSS-M21P52-A2 120 h 72 h 384 h 36

35、0 h WSS-M21P52-A3 96 h 72 h 240 h 196 h WSS-M21P52-A4 120 h 72 h 384 h 360 h Neutral salt spray (NSS) testing shall not be used in demonstrating initial conformance to this specification. Fasteners coated to these specifications shall be tested and evaluated in accordance with SAE/USCAR-1, both in t

36、he as-plated, trivalent chromium and sealed condition (as-processed) and after being held at 120 C for 4 hours (baked), and shall have the specified NSS performance. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these s

37、pecifications. Contact for questions concerning Engineering Material Specifications. 4.1 SIGNIFICANT SURFACES Significant surfaces should be noted on the Engineering Drawing. If not noted there, significant surfaces are generically defined as those surfaces on the finished part that: Are directly v

38、isible when the finished part is assembled in position. Can be a source of corrosion products directly visible, visible by reflection, or visible when they run down the part or onto other parts. Can affect fit or function of the part. Note: Small areas of ferrous corrosion may be allowed on sharp ed

39、ges, corners, and recesses due to reduced coverage of the electroplating. Recesses are generally defined as areas unreachable by a 13 mm (0.5 inch) diameter sphere. 4.2 WORLDWIDE FASTENER COATINGS When used for Worldwide Standard Parts, the Worldwide Fastener Finish Suffix as defined in Worldwide Fa

40、stener Standard WX100 shall be specified as shown below: Specification Finish WX100 Suffix WSS-M21P52-A1 ZinKlad 96 S437U WSS-M21P52-A2 ZinKlad 250 TNT15 S437 WSS-M21P52-A3 ZinKlad 250M TNT15 S437M WSS-M21P52-A4 ZinKlad 250 TNT08 S437L ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 20

41、18, Ford Global Technologies, LLC Page 6 of 7 4.3 RECOMMENDED TESTING REQUIREMENTS FOR DESIGN VALIDATION, PRODUCTION VALIDATION, AND SREA Coating performance is a function of material selection, surface preparation, and coating application. For established coatings and coating lines, this may permit

42、 a reduced test schedule to validate compliance to this specification. Use Table 1 below to determine the recommend test plan depending on the situation. This specification cannot prove out parts or coatings that involve changes in vehicle environment such as increased stone chipping or increased te

43、mperature. These changes may require vehicle testing, consult SDS/ARL requirements. 4.4 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall subm

44、it a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a mini

45、mum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.5 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material u

46、pon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Mat

47、erials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design Verification (DV), Producti

48、on Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.6 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in

49、the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. ENGINEERING MATERIAL SPECIFICATION WSS-M21P52-A1/A4 Copyright 2018, Ford Global Technologies, LLC Page 7 of 7 New Coating Material Established Coating Material All Applicators New Applicator Existing Applicator Test

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1