Niobium Nb Irin Powder
Niobium jẹ irin grẹy, aaye yo 2468 ℃, aaye farabale 4742 ℃. Niobium jẹ iduroṣinṣin ni afẹfẹ ni iwọn otutu yara, pupa ko ni kikun ninu ifoyina atẹgun.