JB/T 12855-2016: Metallic coatings. Electroplated coatings of zinc-nickel alloys

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Scope

This Standard specifies the technical requirements and test methods for electroplated
coatings of zinc-nickel alloys on steel with a nickel content (mass fraction) of 5%~10%
(low nickel) and 10%~17% (high nickel).
This Standard applies to electroplated coatings of zinc-nickel alloys on parts and
components of automobiles, aerospace, and weaponry products.
This Standard does not apply to.
- Parts with a tensile strength greater than 1200 MPa or a Vickers hardness greater
than 370 HV;
- Fasteners (bolts, nuts, etc.) with a quality grade greater than 10.9;
- Parts in contact with magnesium materials.

Basic Data

Standard ID	JB/T 12855-2016 (JB/T12855-2016)
Description (Translated English)	Metallic coatings. Electroplated coatings of zinc-nickel alloys
Sector / Industry	Mechanical and Machinery Industry Standard (Recommended)
Classification of Chinese Standard	A29
Classification of International Standard	25.220.40
Word Count Estimation	9,948
Date of Issue	2016-04-05
Date of Implementation	2016-09-01
Quoted Standard	GB/T 3138; GB/T 6461; GB/T 6462; GB/T 9791; GB/T 10125; GB/T 12334; GB/T 13911; GB/T 16823.3; GB/T 16921
Regulation (derived from)	The Ministry of Industry and Notice No. 2016 in 2016; industry standard filing notice 2016 No. 8 (total No. 200)
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard specifies the technical requirements and test methods for nickel - nickel alloy electroplating layers with nickel content (mass fraction) of 5% to 10% (low nickel) and 10% to 17% (high nickel) on steel. This standard applies to the automotive, aerospace, weapons and other products zero (part) of the zinc-nickel alloy plating layer. This standard does not apply to: - parts with a tensile strength greater than 1200 MPa or a Vickers hardness greater than 370 HV; - fasteners (bolts, nuts, etc.) of a quality rating greater than 10.9; - parts in contact with the magnesium material.