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10
09
2019

Black oxide barbell vs zinc barbell

The comparison is based on the coating of barbells:

The black oxidation is also called as bluening, which is a passivation reaction. A dense oxide film on the surface of iron, which is isolated from iron and acts as a rust preventive.

Black zinc is a method of electroplating on the surface of barbell to produce a zinc layer. The activity of zinc is higher than iron, acid in the air reacts with zinc first to protect iron. After zinc plating, it passes through chromate. It produces a black passivation layer to enhance the protection of electro-galvanizing.

Besides, black zinc film is thicker than black oxide painting on Olympic bars.

 

Related Products:

1) Black Oxide Olympic Bar

2) Black Barbell

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