niobium
Niobium is a transition metal element. Niobium is a lustrous gray metal. High purity niobium metal has high ductility, but will harden with the increase of impurity content. Niobium has a very low cross-section for thermal neutrons and is therefore of considerable use in the nuclear industry. Niobium is a metallic element. Niobium is a gray metal, melting point 2468℃, boiling point 4742℃, density 8.57g/cm3. Niobium is a lustrous gray metal with para magnetism. High purity niobium metal has high ductility, but hardens with increasing impurity content. Its outermost shell configuration is very different from that of the other five. Niobium has the highest critical temperature. Alloys made of niobium, with critical temperatures as high as 18.5 to 21 degrees absolute, are the most important superconducting materials available. Niobium on surgical medical also occupies an important position, it not only can be used to make medical apparatus and instruments, and it is very good "biological adaptability material", because it has excellent corrosion resistance, not with all kinds of liquid substances in the body, and almost no damage to biological tissue, for any sterilization method can adapt to, So it can bind to organic tissue for a long time and remain harmlessly in the body.

Niobium can also induce precipitation and control the cooling rate to realize the dispersion of precipitates. Adjust the toughness level of steel in a wide range. Therefore, the addition of niobium can not only improve the strength of steel, but also improve the toughness, high temperature oxidation resistance and corrosion resistance of steel! The brittle transition temperature of steel is reduced to obtain good welding and forming properties.

Features:
Small volume
Light weight
High temperature oxidation resistance
The corrosion resistance