Originally Posted by
dsbrantjr
It won't, both tin and lead are higher (more noble) in the galvanic series than iron or steel so would have the opposite effect and would cause the wire to corrode MORE readily; this is why metals such as magnesium and zinc are used for sacrificial anodes, and not tin or lead.
https://en.wikipedia.org/wiki/Galvanic_series
I was thinking about the zinc in some solders.
But they usually include tin, which I guess would make it ineffective.