Letter 15002

Electroless Nickel Strip  

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Do you have any suggestions for stripping electroless nickel from a 4340 steel component heat treated to a Rockwell c50-54 hardness. The nickel plating was applied per Mil-C-26074 [link is to spec at TechStreet], class 2 grade B at .0005 to .0007 thickness.

Sam Poutous
Central Point, OR. USA

Several mark products exist as the Enstrip EN of Enthone OMI which is used according to the bulletin. Another very easy and quick form to strip nickel is using 100% nitric acid with 10% of acetic acid as inhibitor. The pieces should be baked to eliminate any rake of humidity to submerge them in the solution without to move it neither to take out it until it is stripped. Note The pieces should be hung.

Gabriel Ramirez Nuñez
plating - Toluca, Mexico

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