ASTM B456-2011e1 Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium《铜+镍+铬和镍+铬电镀层的标准规范》.pdf
《ASTM B456-2011e1 Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium《铜+镍+铬和镍+铬电镀层的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM B456-2011e1 Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium《铜+镍+铬和镍+铬电镀层的标准规范》.pdf(12页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B456 111Standard Specification forElectrodeposited Coatings of Copper Plus Nickel PlusChromium and Nickel Plus Chromium1This standard is issued under the fixed designation B456; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1NOTEThis standard was correc
3、ted editorially in 2011.1. Scope1.1 This specification covers requirements for several typesand grades of electrodeposited copper plus nickel plus chro-mium or nickel plus chromium coatings on steel, nickel pluschromium coatings on copper and copper alloys, nickel pluschromium coatings on Type 300 a
4、nd 400 series stainless steeland copper plus nickel plus chromium coatings on aluminumand its alloys and zinc alloys for applications where bothappearance and protection of the basis metal against corrosionare important. Five grades of coatings are provided to corre-spond with the service conditions
5、 under which each is expectedto provide satisfactory performance: namely, extended verysevere, very severe, severe, moderate, and mild. Definitionsand typical examples of these service conditions are providedin Appendix X1.1.2 This specification does not cover the requirements forthe plating on plas
6、tics, see Specification B604.1.3 The following hazards caveat pertains only to the testmethods portions, Appendix X2, Appendix X3, Appendix X4,and Appendix X5 of this specification: This standard does notpurport to address all of safety concerns, if any, associatedwith its use. It is the responsibil
7、ity of the user of this standardto establish appropriate safety and health practices anddetermine the applicability of regulatory limitations prior touse.2. Referenced Documents2.1 ASTM Standards:2B183 Practice for Preparation of Low-Carbon Steel forElectroplatingB242 Guide for Preparation of High-C
8、arbon Steel for Elec-troplatingB252 Guide for Preparation of Zinc Alloy Die Castings forElectroplating and Conversion CoatingsB253 Guide for Preparation of Aluminum Alloys for Elec-troplatingB254 Practice for Preparation of and Electroplating onStainless SteelB281 Practice for Preparation of Copper
9、and Copper-BaseAlloys for Electroplating and Conversion CoatingsB320 Practice for Preparation of Iron Castings for Electro-platingB368 Test Method for Copper-Accelerated Acetic Acid-SaltSpray (Fog) Testing (CASS Test)B380 Test Method for Corrosion Testing of DecorativeElectrodeposited Coatings by th
10、e Corrodkote ProcedureB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination of CrossSectionB489 Practice for Bend Test for Ductility of Electrodepos-ited and Autocatalytically Deposited Metal Coatings onMetalsB490 Practice for Micrometer Bend Test for Duct
11、ility ofElectrodepositsB499 Test Method for Measurement of Coating Thick-nesses by the Magnetic Method: Nonmagnetic Coatings onMagnetic Basis MetalsB504 Test Method for Measurement of Thickness of Me-tallic Coatings by the Coulometric MethodB530 Test Method for Measurement of Coating Thick-nesses by
12、 the Magnetic Method: Electrodeposited NickelCoatings on Magnetic and Nonmagnetic SubstratesB537 Practice for Rating of Electroplated Panels Subjectedto Atmospheric ExposureB568 Test Method for Measurement of Coating Thicknessby X-Ray Spectrometry1This specification is under the jurisdiction of ASTM
13、 Committee B08 onMetallic and Inorganic Coatings and is the direct responsibility of SubcommitteeB08.08.03 on Decorative Coatings.Current edition approved June 1, 2011. Published July 2011. Originally approvedin 1967. Last previous edition approved in 2011 as B456 11. DOI: 10.1520/B0456-11E01.2For r
14、eferenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700,
15、West Conshohocken, PA 19428-2959, United States.B571 Practice for Qualitative Adhesion Testing of MetallicCoatingsB602 Test Method for Attribute Sampling of Metallic andInorganic CoatingsB604 Specification for Decorative Electroplated Coatingsof Copper Plus Nickel Plus Chromium on PlasticsB659 Guide
16、 for Measuring Thickness of Metallic and Inor-ganic CoatingsB697 Guide for Selection of Sampling Plans for Inspectionof Electrodeposited Metallic and Inorganic CoatingsB762 Test Method of Variables Sampling of Metallic andInorganic CoatingsB764 Test Method for Simultaneous Thickness and Elec-trode P
17、otential Determination of Individual Layers inMultilayer Nickel Deposit (STEP Test)D1193 Specification for Reagent WaterD3951 Practice for Commercial PackagingE50 Practices for Apparatus, Reagents, and Safety Consid-erations for Chemical Analysis of Metals, Ores, andRelated MaterialsG85 Practice for
18、 Modified Salt Spray (Fog) Testing2.2 ISO Standards:ISO 1456 Metallic coatingsElectrodeposited coatings ofnickel plus chromium and of copper plus nickel pluschromium33. Terminology3.1 Definitions:3.1.1 significant surfacesthose surfaces normally visible(directly or by reflection) that are essential
19、to the appearance orserviceability of the article, or both, when assembled in normalposition; or that can be the source of corrosion products thatdeface visible surfaces on the assembled article. When neces-sary, the significant surfaces shall be specified by the purchaserand shall be indicated on t
20、he drawings of the parts, or by theprovision of suitably marked samples.3.1.2 p-pointsspecific points of measurement that areencouraged to be determined and agreed upon with thecustomer early in the contract review process. These are usedfor measurement of critical characteristics that vary withcurr
21、ent density such as thickness, STEP, active sites, etc. andmay be designated at multiple locations per part.4. Classification4.1 Five grades of coatings designated by service conditionnumbers and several types of coatings defined by classificationnumbers are covered by this specification.4.2 Service
22、 Condition Number:4.2.1 The service condition number indicates the severity ofexposure for which the grade of coating is intended:SC 5 extended severe serviceSC 4 very severe service,SC 3 severe service,SC 2 moderate service, andSC 1 mild service.4.2.2 Typical service conditions for which the variou
23、sservice condition numbers are appropriate are given in Appen-dix X1.4.3 Coating Classification NumberThe coating classifica-tion number comprises:4.3.1 The chemical symbol for the basis metal (or for theprincipal metal if an alloy) followed by a slash mark, except inthe case of stainless steel. In
24、this case, the designation shall beSS followed by the designated AISI number followed by aslash, that is, SS463/,4.3.2 The chemical symbol for copper (Cu) (if copper isused),4.3.3 A number indicating the minimum thickness of thecopper coating in micrometers (if copper is used),4.3.4 A lower-case let
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