
plating, anodizing, & finishing Q&As since 1989
"Testing of Black Chrome Coating"
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2003
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,
- Mumbai, Maharashtra, India
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
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