Most of us don’t like to see our ss fittings on our boats and rigging get rusty and streak rust stain down the hull or on deck.
Brion Toss told me that under a rust stain on ss, a pit in the surface of the metal is or has formed, and you can see this with a 50 X hand held microscope.
Ok, so I placed my 50 x scope order with Edmund Scientific, and verified what he said, as I checked rust spots on ss.
This led me on a quest to try to remedy the rust forming problems on my ss.
At that time circa 1987, there wasn’t much information available to me and I had to get a bit here and a bit there, but now there is much more information available, like in the sailboat rigging section, (West Advisor) in the West Marine catalog, and many places elsewhere.
The worst rusting areas were on the welded ss stansion bases, around bolts and toggle pin holes on chainplates, and on the welds on the cranze iron and boomkin chainplates.
I found that after cleaning the rust off the ss, with a ss pickling paste, and then paste waxing where I could, this reduced my rusting problem, but I also started experimenting with marrying bronze with the ss, and found that really helped reduce rusting too.
Where it was easy, I replaced ss bolts with silicon brnz bolts, or put silicon brnz washers under ss bolts, or on clevis pins between chainplate tangs and ss toggle cheeks.
I still do get rust spots/pitting on open areas on the ss surfaces, but almost none around the bronze to ss contact areas.
There is a heap of stuff, I haven’t said here, but marrying bronze with ss has helped reduce maintaince on my BCC.