It depends the material. At time spans of millions of years, half lives of common elements can become important and this is a nuclear reaction, not a chemical one and so progresses even if the metal is otherwise chemically protected or non-reactive.

This is part of the reason you can't just freeze a person in cryostasis indefinitely even if it somehow stops aging 100% because without biological functions and nutrients to cycle through and repair the body, the elements that constitute the body decay into other elements over a long enough period of time. The more something relies on things being exactly the element it is supposed to be, the more sensitive it will be to these changes.

It depends the material. At time spans of millions of years, half lives of common elements can become important and this is a nuclear reaction, not a chemical or mechanical one and so progresses even if the material is otherwise chemically protected or non-reactive and mechanically protected.

This is part of the reason you can't just freeze a person in cryostasis indefinitely even if it somehow stops aging 100% because without biological functions and nutrients to cycle through and repair the body, the elements that constitute the body decay into other elements over a long enough period of time. The more something relies on things being exactly the element it is supposed to be, the more sensitive it will be to these changes.

No, at time spans of millions of years, half lives of elements becomes important and this is a nuclear reaction, not a chemical one and so progresses even if the metal is otherwise chemically protected or non-reactive.

It depends the material. At time spans of millions of years, half lives of common elements can become important and this is a nuclear reaction, not a chemical one and so progresses even if the metal is otherwise chemically protected or non-reactive.

This is part of the reason you can't just freeze a person in cryostasis indefinitely even if it somehow stops aging 100% because without biological functions and nutrients to cycle through and repair the body, the elements that constitute the body decay into other elements over a long enough period of time. The more something relies on things being exactly the element it is supposed to be, the more sensitive it will be to these changes.