Niobium

Niobium carbide is a frequent intentional product in microalloyed steels due to its extremely low solubility product in austenite, the lowest of all the refractory metal carbides. This means that micrometre-sized precipitates of NbC are virtually insoluble in steels at all processing temperatures and their location at grain boundaries helps prevent excessive grain growth in these steels. This is of enormous benefit, and the cornerstone of microalloyed steels, because it is their uniform, very fine grain size that ensures both toughness and strength. The only commonly occurring compound with a lower solubility and hence, greater potential for restricting the grain growth of steels is titanium nitride.

What it Is:
1/4
NbC/Nb2C
Appearance:

Brown-gray metallic powder with purple luster

Application:
  • Niobium carbide is a frequent intentional product in microalloyed steels due to its extremely low solubility product in austenite, the lowest of all the refractory metal carbides

  • Niobium carbide has an extremely low solubility product in austenite. When niobium carbide is added by micrometre-sized precipitates, it is virtually insoluble in steels at all temperatures. Niobium carbide's location at ground boundaries prevents excessive gran growth.

  • Niobium has many medical research applications. It is also alloyed to produce arc-welding rods and in corrosion-resistant steel. 

Grades: FNbC-1, FNbC-2

Office: 50 W. Big Beaver Rd. STE 120 Troy, MI 48084

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