No, maraging steels are ones that ultra-low carbon steels. The carbon content in normal steel determines the hardness.

They use either Nickel-Titanium or Nickel-Molybdenum as the hardening component and keep the carbon content as low as possible.

Maraging steels are often used in low-temperature applications because they retain their toughness at lower temps than carbon-steel.

With respect to Iran and North Korea, maraging steel tubes were one of the embargoed products.

Eats cheroots and leaves.

I'm not sure what Iran's metallurgical capacities are, even if maraging steel can be produced locally the requirements for turning the steel into the tubing etc required is more likely to be the problem.

Eats cheroots and leaves.

No, I don't think it's related. I have only the vaguest ideas on metallurgy so take it with a pile of salt, though.

Maraging steel is a rather unusual alloy of iron, nickel and cobalt with other things in it (molybdenum, titanium, aluminium, silicon, copper ...) but no carbon (which is unusual for high-strength steel) with special heat treatment. But I haven't seen anywhere that manufacturing it requires a cold alloying. So I'd presume it uses normal alloying in liquid phase in a crucible.

The isostatic presses would rather be used for things like ceramics.