No, unless it has been soaking in saltwater for a few years.

Always good to keep your blade free of rust though.

To give you a prespective of how DC rusts my MOD7 has sat on my desk oiled in the cardboard sheath since I got it. I took it out today and there were tiny specks of rust on it that I could srape of with my fingernail.
Not bad but it is cosmetic.