Do you store your bike in a bathtub full of salty water?
I've never had a chain do anything like that and I ride in all conditions..
Anyway, you need to know the width of your chainring and cog before choosing a chain. If you have 3/32 chainring and cog you need 3/32 or 1/8th chain. If either chainring or cog are 18th you need a 1/8th chain.