All of our raw steel legs are dispatched with a thin film of oil to help prevent rust. This will however gradually disappear (or you will clean it!) and your legs will be prone to rusting.
Raw steel legs will eventually rust indoors due to natural moisture in the air. The rate at which they will rust depends entirely on this - how humid or dry your particular home is. We have seen raw steel legs in our own homes last a few months without too much rust however we have also had reports of our customers legs rusting within a matter of weeks.
Raw steel legs can be upkept in the home by giving them a good scrub every now and again with some WD40 and a scouring pad. You can find more advice on finishing the legs to protect from rust here.
If it rains your bare steel legs will rust within a matter of hours.
Speeding up the process
Some of our customers actually love the rusted steel look. To achieve this quicker you can apply some vinegar or lemon juice onto your legs and leave them outside for a few days.