Quote:
Originally Posted by Silver Streek
It will eventually degrade but it can last decades if correctly specified for the specific application. Certainly lasts longer than paint. I work in the rail industry on points systems, we moved away from paint for many of our metal products sitting out in the open years ago. There's equipment out there that's been sat in the tracks for many decades after having all sorts of contaminants spread all over them, including the contents of train toilets and they are still in good condition to this day.
The other plus point for us using zinc plating is the process is fairly well controlled so the plating thickness can be applied so that the parts are still within dimensional tolerance after plating, not so easy with paint. It's also cheaper which I guess would have been the main driver for moving from paint to plating.
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I degreased some of the metal on which the reluctor rings are and sprayed some water on it. The water has now evaporated and there is no sign of rust. Does that mean the metal has been plated or it is not iron?