ASTM_B_904_-_00_2014.pdf

Designation:B90400(Reapproved 2014)Standard Specification forAutocatalytic Nickel over Autocatalytic Copper forElectromagnetic Interference Shielding1This standard is issued under the fixed designation B904;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.1.ScopeThis specification presents the requirements for multilayercoatings of autocatalytic nickel-phosphorus over autocata-lytic copper on metallic and polymeric substrates.The coat-ing system is intended to provide electromagnetic interfer-ence(EMI)protection properties or electrostatic discharge(ESD)protection to parts fabricated from either polymeric ormetallic materials.2.Referenced Documents2.1 ASTM Standards:2A919 Terminology Relating to Heat Treatment of Metals(Withdrawn 1999)3B183 Practice for Preparation of Low-Carbon Steel forElectroplatingB242 Guide for Preparation of High-Carbon Steel for Elec-troplatingB252 Guide for Preparation of Zinc Alloy Die Castings forElectroplating and Conversion CoatingsB253 Guide for Preparation of Aluminum Alloys for Elec-troplatingB320 Practice for Preparation of Iron Castings for Electro-platingB322 Guide for Cleaning Metals Prior to ElectroplatingB374 Terminology Relating to ElectroplatingB504 Test Method for Measurement of Thickness of Metal-lic Coatings by the Coulometric MethodB532 Specification for Appearance of Electroplated PlasticSurfacesB533 Test Method for Peel Strength of Metal ElectroplatedPlasticsB553 Test Method for Thermal Cycling of ElectroplatedPlastics(Withdrawn 1991)3B554 Practice for Measurement of Thickness of MetallicCoatings on Nonmetallic Substrates(Withdrawn 1987)3B567 Test Method for Measurement of Coating Thicknessby the Beta Backscatter MethodB568 Test Method for Measurement of Coating Thicknessby X-Ray SpectrometryB602 Test Method for Attribute Sampling of Metallic andInorganic CoatingsB697 Guide for Selection of Sampling Plans for Inspectionof Electrodeposited Metallic and Inorganic CoatingsB727 Practice for Preparation of Plastics Materials for Elec-troplatingB733 Specification for Autocatalytic(Electroless)Nickel-Phosphorus Coatings on MetalD3330/D3330M Test Method for PeelAdhesion of Pressure-Sensitive TapeD3359 Test Methods for Measuring Adhesion by Tape TestD4935 Test Method for Measuring the ElectromagneticShielding Effectiveness of Planar Materials2.2 Military Standard:MIL-STD-461 Electromagnetic Emission and SusceptibilityRequirements for the Control of Electromagnetic Interfer-ence43.Terminology3.1 DefinitionsMany of the terms used in this specifica-tion can be found in Terminologies A919 or B374.3.2 Definitions of Terms Specific to This Standard:3.2.1 significant surfaces,nthese surfaces are classified asprimary,secondary,nonsignificant,and coating-free surfaces.3.2.1.1 coating-free areas,adjareas specified on partdrawings or suitably marked samples.3.2.1.2 nonsignificant surfaces,adjall holes,recesses,andother areas where a controlled deposit cannot be obtainedunder normal coating conditions and that cannot be touched1This specification is under the jurisdiction of ASTM Committee B08 onMetallic and Inorganic Coatings and is the direct responsibility of SubcommitteeB08.03 on Engineering Coatings.Current edition approved Nov.1,2014.Published November 2014.Originallyapproved in 2000.Last previous edition approved in 2009 as B904 00(2009).DOI:10.1520/B0904-00R14.2For referenced 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.Philadelphia,PA 191115094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 with a 20-mm diameter ball shall be considered nonsignificantsurfaces unless otherwise specified on part drawings or suitablymarked samples.3.2.1.3 primary significant surface,adjall mating surfacesand those other surfaces specified on part drawings or suitablymarked samples.3.2.1.4 secondary significant surfaces,adjall surfaces,other than primary significant surfaces,that can be touchedwith a 20-mm diameter ball shall be considered secondarysignificant surfaces unless otherwise specified on part drawingsor suitably marked samples.4.Classification4.1 This classification system provides for the following:4.1.1 Types of coating based on thickness and testingrequirements,and4.1.2 Grades of coating based on alloy composition.4.2 Coating Type:4.2.1 The coating type indicates the type of application andtests to be used in determining the acceptan