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Ergänzende Informationen

ASTM B841-18

Standard Specification for Electrodeposited Coatings of Zinc Nickel Alloy Deposits

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NORM herausgegeben am 1.7.2018

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Informationen über die Norm:

Bezeichnung normen: ASTM B841-18
Ausgabedatum normen: 1.7.2018
SKU: NS-855385
Zahl der Seiten: 5
Gewicht ca.: 15 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM

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Kategorie - ähnliche Normen:

Metallic coatings Nickel, chromium and their alloys

Die Annotation des Normtextes ASTM B841-18 :

This specification covers the requirements for electrodeposited zinc nickel alloy coatings on metals. The zinc nickel coating shall be defined as Class 1. The five chromate conversion coating types shall be defined as follows: Type A shall be with colorless conversion coatings, Type B shall be with yellow iridescent conversion coatings, Type C shall be with bronze conversion coatings, Type D shall be with black chromate conversion coatings, and Type E shall be with any colors mentioned plus organic topcoat. The metal to be plated shall be free of flaws and defects that will be detrimental to the zinc alloy coating. It shall be subjected to such cleaning, pickling, and electroplating procedures as necessary to yield deposits. The coating shall be produced from an aqueous electroplating system that may be either an alkaline or acid formulation. The coating on all ready visible surfaces shall have an acceptable and characteristic appearance. The coating shall be adherent, free from blisters, pits, or discontinuities, and shall be free of cracks in the as plated state. The coating shall withstand normal handling and storage conditions without chipping, flaking, or other coating damage. The corrosion resistance of the coating shall be evaluated.

Keywords:
coatings electrodeposited, corrosion resistant coatings, electrodeposited zinc nickel alloy plating, electroplating, zinc alloy, zinc nickel ,, ICS Number Code 25.220.40 (Metallic coatings), 77.120.40 (Nickel, chromium and their alloys)

Ergänzende Informationen

1. Scope

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

1.2 The values stated in SI units are to be regarded as the standard.

1.3 The following precautionary statement pertains to the test method portion only, Section 8, of this specification: 1.4 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

B850-98(2022)	Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement
B762-21	Standard Guide of Variables Sampling of Metallic and Inorganic Coatings
B849-02(2023)	Standard Specification for Pre-Treatments of Iron or Steel for Reducing 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
B374-21	Standard Terminology Relating to 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
B320-60(2019)	Standard Practice for Preparation of Iron Castings for Electroplating
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
B322-99(2020)e1	Standard Guide for Cleaning Metals Prior to Electroplating (Includes all amendments and changes 12/7/2020).
B571-23	Standard Practice for Qualitative Adhesion Testing of Metallic Coatings
B602-21	Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings
B697-88(2021)	Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
D3951-18(2023)	Standard Practice for Commercial Packaging

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