Zinc Cobalt Plating

The Zinc Cobalt process produces a tough, durable finish with excellent lubricity and far greater resistance to seizure especially useful for moving parts and threaded connections. Lower toxicity of the process and the deposit makes the coating far safer than cadmium.
By electroplating zinc and cobalt to the base metal, the end result is a uniform ductility that will withstand up to six times the corrosion resistance of conventional zinc plating alone.
Zinc Cobalt Specifications
ASTM B 840
Class – Coating composition |
Class Zinc Component Cobalt Component |
Class 1 99% 1% |
Type – After plating passivation treatment
Type Type of Treatment |
Type A Proceeds toneless chromate treatment- white passivation |
Type B Proceeds yellow chromate treatment |
Type C Proceeds bronze shade treatment |
Type D Proceeds black treatment |
Type E All mentioned treatments, in addition of an organic coat (paint, polish etc.) |
Grade – Coating Thickness
Grade Minimal Micron Thickness
6 6 |
12 12 |
18 18 |