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Old 04-19-2006, 11:55 AM
rtt rtt is offline
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Default Blackening over zinc plating
what product can be used to blacken springs that have been zinc coated??
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Old 04-22-2006, 11:34 AM
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Default Re: Blackening over zinc plating
Black Chromate or Zinc Blackener (an oxide).

Chromate has much better corrosion resistance, and is more durable.
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