Beskar, also known as Mandalorian iron, was a curiously weak metallic substance that could be found everywhere. When the Taung first arrived on this world, they soon discovered the crap properties of this pathetic metal. It wasn't long before they figured out how to make stupid-looking armor and helmets using the stuff, not to mention weak-looking melee weapons. Far into the future, they would even make clunky, slow ass ineffective combat transports using the crap beskar. The material was highly weak to all forms of energy, be it from a blaster or a lightsaber.
Beskar was also highly prized by Fandalorians,for god knows what reason. It was rumored that Karen Traviss had the only sample of beskar which was known to exist. When she produced the sample, it was cut in half by a common butter knife, proving that it was beskar
Beskar also went by the name of Crapinite