ASTM B840-22

Standard Specification for Electrodeposited Coatings of Zinc Cobalt Alloy Deposits

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STANDARD published on 15.11.2022

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The information about the standard:

Designation standards: ASTM B840-22
Publication date standards: 15.11.2022
SKU: NS-1091347
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Metallic coatings

Annotation of standard text ASTM B840-22 :

This specification covers the requirements for electrodeposited zinc cobalt alloy coatings on metals. The coating class is Class 1 and five coating types are Type a, Type b, Type c, Type d, and Type e. The metal to be plated shall be subjected to such cleaning, pickling, and electroplating procedures. Coating requirements include: substrate, nature of coating, appearance, thickness, adhesion, corrosion resistance, and pre- and post-coating treatments of iron and steel for reducing the risk of hydrogen embrittlement. Adhesion, porosity, corrosion resistance, or appearance tests shall be made.

Keywords:
coatings electrodeposited, corrosion resistant coatings, electrodeposited zinc cobalt alloy plating, zinc cobalt ,, ICS Number Code 25.220.40 (Metallic coatings)

Additional information

1. Scope

1.1?This specification covers the requirements for electrodeposited zinc cobalt alloy coatings on metals.

1.2?The following precautionary caveat pertains to the test method portion only, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3?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

B762-21	Standard Guide of Variables Sampling of Metallic and Inorganic Coatings
D3951-18(2023)	Standard Practice for Commercial Packaging
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
B850-98(2022)	Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement
B117-19	Standard Practice for Operating Salt Spray (Fog) Apparatus
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
B487-20	Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
B499-09(2021)e1	Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals (Includes all amendments and changes 5/18/2021).
B504-90(2023)	Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method
B697-88(2021)	Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
B849-02(2023)	Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement
B507-14(2021)	Standard Practice for Design of Articles to Be Electroplated on Racks
B568-98(2021)	Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
B571-23	Standard Practice for Qualitative Adhesion Testing of Metallic Coatings
B602-21	Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings

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