To add to the other reply, it'd be a new class especially since it would be at standard pressure. I think the current highest Tc SC at standard pressure is at

To add to the other reply, it'd be a new class especially since it would be at standard pressure. I think the current highest Tc SC at standard pressure is at much lower temperatures. Frankly, there's probably a lot that you can do with a superconductor that you can cool with liquid nitrogen even if it can't carry much current or handle high magnetic fields. Moving from liquid helium cooling to liquid nitrogen alone significantly reduces the cost and complexity of your cooling system.