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Iron Contamination of HEEF 25 hard chrome solution

2003

Hi all,

I need more information about the effects of iron contamination in a chrome solution (HEEF 25).

1. What will the affects on the process be?
2. Is there a method to remove the iron out of the solution?
3. At what maximum PPM levels will the solution be useless?

Thanks,

Neville Young
Automotive Component Supplier - Cape Town, Western Cape, South Africa

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HEEF 25 is a proprietary system, so the vendor--who knows what the proprietary ingredients are--is better positioned to help you than the rest of us who are only guessing what they are.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003

There is HEEF 25, European HEEF 25 and HEEF 25 substitutes. They are not the same. The manufacturer of the product can tell you what the technical limits are. As far as iron contamination, I used a ceramic porous pot which took out the trash metals and kept the trivalent in check. We plated ID's so the formation of trivalent is a given, regardless of what you do.

James Watts
- Navarre, Florida
2003