THIS IRON PILLAR DOES SOMETHING VERY STRANGE WHEN IT COMES IN CONTACT WITH RAIN

This Iron Pillar does something very strange when it comes in contact with rain. It produces a material called Misawite, which is not common.
The material actually forms a protective coating over the Iron pillar which creates a shield with magnetic properties.

The Iron Pillar is actually made of 98% Iron, 1% Phosphorous and the remaining 1% is made of an ancient concoction called Vajra-sanghata.

If you look at the total composition of the Iron Pillar, it is made of a complex alloy, created in ancient times.

Instead of rusting which is Iron Oxide, the phosphorus and Vajra-sanghata make water vapor which converts into Misawite protecting the Iron from rust.