ASTM B840-22

ASTM B840-22

Standard Specification for Electrodeposited Coatings of Zinc Cobalt Alloy Deposits

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Détails

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.


Rationale:

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.

Informations supplémentaires

Auteur American Society for Testing and Materials (ASTM International)
Comité B08.06 - Committee B08 on Metallic and Inorganic Coatings
Edité par ASTM
Type de document Norme
Thème ,Metallic coatings
ICS 25.220.40 : Revêtements métalliques
Nombre de pages 5
Remplace ASTM B840-15
Recueil ASTM Volume 02.05 - Multi-User - Single-Site Online
Mot-clé B840

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