ASTM B904-00(2021)

Standard Specification for Autocatalytic Nickel over Autocatalytic Copper for Electromagnetic Interference Shielding

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STANDARD published on 1.4.2021

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The information about the standard:

Designation standards: ASTM B904-00(2021)
Publication date standards: 1.4.2021
SKU: NS-1024136
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Metallic coatings

Annotation of standard text ASTM B904-00(2021) :

This specification covers the requirements for multilayer coatings of autocatalytic nickel-phosphorus over autocatalytic copper intended for electromagnetic interference or electrostatic discharge shielding to parts fabricated from either polymeric or metallic substrates or parts. Coatings are classified into four types based on thickness and testing requirements, and into two grades based on alloy composition, specifically phosphorus. Surfaces shall be prepared by cleaning it of surface contaminants, conditioning, and activation; identifying of base material suitability; and mechanical roughening. Coatings shouldl be inspected for process qualification, appearance, blisters, unplated areas, adhesion, electrical continuity, and DC resistance. Coatings should also be tested for thickness, which may be performed either by Coulometric, X-ray, or Beta backscatter methods. The requirements for process qualification shall include coating composition, electrical integrity, adhesion, thermal shock resistance, thermal cycling, and shielding effectiveness.

Keywords:
ICS Number Code 25.220.40 (Metallic coatings)

Additional information

1. Scope

1.1?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

B602-21	Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings
B532-85(2021)	Standard Specification for Appearance of Electroplated Plastic Surfaces
B697-88(2021)	Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
B727-04(2020)	Standard Practice for Preparation of Plastics Materials for Electroplating
B733-22	Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal
D3330/D3330M-04(2018)	Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape
D3359-23	Standard Test Methods for Rating Adhesion by Tape Test
D4935-18	Standard Test Method for Measuring the Electromagnetic Shielding Effectiveness of Planar Materials
B533-85(2019)	Standard Test Method for Peel Strength of Metal Electroplated Plastics
B553-79	Test Method for Thermal Cycling of Electroplated Plastics (Withdrawn 1991)
B554-85	Recommended Practice for Measurement of Thickness of Metallic Coatings on Nonmetallic Substrates (Withdrawn 1986)
B567-98(2021)	Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method
B568-98(2021)	Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
A919-84(1993)e1	Terminology Relating to Heat Treatment of Metals (Withdrawn 1999)
B183-18(2022)	Standard Practice for Preparation of Low-Carbon Steel for Electroplating
B242-99(2020)	Standard Guide for Preparation of High-Carbon Steel for Electroplating
B252-92(2020)	Standard Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings
B253-11(2022)	Standard Guide for Preparation of Aluminum Alloys for Electroplating
B320-60(2019)	Standard Practice for Preparation of Iron Castings for Electroplating
B322-99(2020)e1	Standard Guide for Cleaning Metals Prior to Electroplating (Includes all amendments and changes 12/7/2020).
B374-21	Standard Terminology Relating to Electroplating
B504-90(2023)	Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method
MIL-STD-461	Electromagnetic Emission and Susceptibility Requirements for the Control of Electromagnetic Interference Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave. Philadelphia, PA 19111-5094, Attn: NPODS.

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