Re: [EE] Nickel plated brass vs Zinc plated steel

On 28 Jan 2025 at 22:58, smplx wrote:

> On Wed, 29 Jan 2025, Brent Brown wrote:
> 
> > Hi,
> >
> > An M18 inductive proximity sensor that I buy from a reputable brand has a Nickel
> > plated brass body, and is (or at least it used to be) supplied with a pair of Nickel
> > plated brass mounting nuts.
> >
> > They have now begun supplying the Nickel plated brass sensor with Zinc plated
> > steel mounting nuts. On questioning they quote increases in the price of brass and
> > worries about supply as the reasons for the change. Fair enough, possibly.
> >
> > I am happy with my original choice of nickel plated brass in providing a suitable level
> > of corrosion resistance in this application, but I'm less than happy with Zinc coated
> > steel. My main question though is, are Nickel/Zinc even galvanically compatible?
> 
> according to this table NO!
> 
> https://www.qsl.net/n9zia/electrochemical.html
> 
> Regards
> Sergio

Thanks Sergio, that's what I was thinking, good to have it seconded. Have passed 
my enquiry back to the supplier to provide a better answer. If Nickel plated brass 
nuts are truly not available then Stainless steel could be a good alternative.

Brent