amazingy the answer is hot humid cimates where the oxide can react with the outside pluatrian of the metal which will start the rust to form.
rust is the result of a combination of moist conditions and oxygen,
soggy and wet conditions can make metal rust
damp conditions with ready access to air
Cool, clear, and calm conditions favor the formation of fog by radiation cooling.
Dry weather, like the desert. Moisture causes rust.
This depends upon environmental conditions.
Typical sewing needles are stainless steel. Normally they do not rust, but can under severe conditions.
If you put metal in water it turns rusty basically any condition is possible for rust. All rust needs is oxegen, and that is in the air and also in water
Rust will not occur where it is dry and humid
Depends greatly on the conditions where the iron is found.
NO. The rotors will rust overnight if the conditions are right. The rust will be removed the first time the brakes are applied. Yes if the rust has pitted them. Just have them turned on a brake lathe.
Cool, clear, and calm conditions favor the formation of fog by radiation cooling.