Letter 14082

Galvanic Corrosion between Nickel Plating and 17-4 SS [Florida] 

We are designing an instrument that uses nickel-plated neodymium-iron-boron magnets in contact with 17-4PH stainless steel. The environment may involve intermittent, temporary exposure to electrolytes such as saline, and the instruments will be repeatedly sterilized in autoclaves. We are not concerned about corrosion of the nickel plating by itself, we are concerned that it could be a problem where it touches the stainless. Is there a problem with galvanic corrosion between nickel plating and 17-4PH stainless steel?

Edmund Loftus
- Gainesville, Florida, USA

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