Black zinc plating and Galvanizing

31 Jul.,2025

Black zinc plating and galvanizing differ in process and characteristics. Black zinc plating has better hardness and corrosion resistance than galvanizing, so it is more appropriate to use black zinc plating in specific usage scenarios.

 

Author: Marisa

1. Characteristics of black zinc plating

Black zinc plating is obtained by nitriding after zinc plating on the surface. It has a black appearance, a relatively smooth surface, excellent corrosion resistance and high hardness. The hardness and corrosion resistance of black zinc plating are higher than those of zinc plating, and it has good corrosion resistance after surface treatment, so it is widely used in construction, automobile, electronics and other industries.

 

2. Characteristics of zinc plating

Galvanizing is to coat zinc on an iron substrate. The use of the zinc plating process can improve the corrosion resistance of iron parts. Because zinc metal has good chemical activity, a protective layer of zinc oxide will be formed when it comes into contact with air, thereby improving the corrosion resistance of iron parts. In addition, zinc plating is also aesthetically pleasing because its appearance will present a layer of metallic luster.

 

3. The difference between black zinc plating and zinc plating

The difference between black zinc plating and zinc plating lies mainly in their different production processes and characteristics. First, black zinc plating is obtained by nitriding the zinc layer on the surface, while zinc plating is obtained by coating zinc on an iron substrate. Secondly, the appearance of black zinc plating is black, while zinc plating presents a metallic luster. Finally, the hardness and anti-corrosion performance of black zinc plating are higher than those of galvanizing.

 

In summary, black zinc plating and galvanizing are different in process and characteristics. The hardness and anti-corrosion performance of black zinc plating are better than those of galvanizing, so it is more appropriate to use black zinc plating in specific usage scenarios.