Re: ACMO rigging - unusual failure
toggle quoted messageShow quoted text
What a wonderful forum. The expertise and experience here is astonishing. I do take issue with the comment “stainless steel doesn’t rust” although I suspect something may have got lost in the Franglish translation. I suspect that over the years we’ve all left a knife or something not well built in a wet stainless steel sink for a few days and have come back to see rust stains on the sink as much as the knife. Luckily a bit of a polishing seems to resolve the issue and keep our marriages intact.
Stainless Steel depends on OXYGEN not to rust. When it gets exposed to oxygen, the chromium and nickel form an oxide coating film that occur to cover up even minor scratches preventing rusting. It’s that shiny oxide layer that gives it its “rust free “ appearance.
Stainless steel certainly can rust when deprived of oxygen and when exposed to “halide” agents that can break down the oxide layer such as fluorine, iodine and CLORINE. Guess what salt is made of... NaCl (Sodium Chloride). So left in grease, in a salt water environment deep into the swage where there isn’t a lot of oxygen... it’ll rust... eventually. Scary how you didn’t really have much warning of the impending failure. Delos cut one open in one of their Thailand videos a few years back and most of the damage was deep down in the swage on that as well.
On Apr 13, 2021, 10:44 PM -0400, Bill Kinney <cruisingconsulting@...>, wrote:
Future Amel Owner & Amel Owner Registry Moderator
Oro-Medonte, Ontario, Canada