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ASTM B841-18
Standard Specification for Electrodeposited Coatings of Zinc Nickel Alloy Deposits
Přeložit název
NORMA vydána dne 1.7.2018
Informace o normě:
Označení normy: ASTM B841-18
Datum vydání normy: 1.7.2018
Kód zboží: NS-855385
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy 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)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||||||||||||||||
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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. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||
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