[inasio]

Stayed a few times in a place exposed to constant breeze from a tropical Pacific coast beach, and learned that stainless steel doesn't really last very long there. Everything stainless steel-based (fixtures, fridges, handles) rusts in a few years. I'd bet there's a market for upscale alloys

[annoyingnoob]

Depends on the alloy. Just a guess, you had 304 stainless which will rust fairly easily in saltwater. 316 would last longer. Also it can be tricky to retain the corrosion resistance when welding stainless, your part might corrode first at weld points.

https://www.nemaco.com/blogs/304-vs-316-stainless-steel-diff...