Can the immovable rod be broken?

I was looking at the immovable bar (as an option to hold someone) and there were no details about whether it could be broken, or how to do it.

The immovable bar has a weight limit of 8,000 pounds before it is deactivated and falls to the ground, or it can move up to 10 feet after succeeding in a CD 30 endurance test.

Are there ways to break the rod?