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11/1/2000

Removing EN from Steel

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Question: What is the best way to remove electroless nickel from a steel substrate?

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Question:

What is the best way to remove electroless nickel from a steel substrate? O.W.

Answer:

Many people are of the opinion there is no best way to strip electroless nickel from a steel substrate! However, this skepticism aside, the Metal Finishing Guidebook and Directory, from Elsevier 914-333-2500, gives a formulation consisting of 8.0 oz/gal sodium hydroxide, 16 oz/gal ethylene diammine and 8.0 oz/gal m-nitrobenzene sulfonic acid. This solution is used at 170F.

Instead of using a “home brew” like the one above, I recommend that you contact your chemical vendor and obtain a proprietary formulation. They usually work better! You can

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