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  for Metal Finishing since 1989
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Testing of Black Chrome Coating

We are trying a Black chrome plating on a component which may come in contact with food. We want to know whether black chrome is non toxic or not and if any testing standard is available or not.

Regards,

Munish Kaushal
- Mumbai, Maharashtra, India
2003

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2003

Mr Kaushal

Are you doing Black Chrome plating from a Hexavalent Chrome Bath ? Or are you Black Passivating a zinc plated Component?

In both cases the coating could cause harm if edible food stuff is permitted to come in contact. ( Acidic foodstuff may slowly dissolve the layer)

The solution is not cheap if Black is what you want..

Use Black gold if cost permits. Or take a deviation from your client, and plate tin.

Asif Nurie [deceased]
- New Delhi, India
With deep regret we sadly advise that Asif passed away on Jan 24, 2016