PRODUCT DESCRIPTION

Niobium iron is an alloy of niobium and iron as the main components. It also contains impurities such as aluminum, silicon, carbon, sulfur, and phosphorus. According to the niobium content of the alloy, it is divided into FeNb50, FeNb60, and FeNb70. The ferroalloy produced from niobium-tantalum ore contains tantalum, which is called niobium-tantalum iron. Niobium iron and niobium-nickel alloys are used as niobium additives in vacuum smelting of iron-based alloys and nickel-based alloys.

PRODUCT USES

Niobium iron is mainly used to smelt high-temperature (heat-resistant) alloys, stainless steel, and high-strength low-alloy steel. Niobium in stainless steel and heat-resistant steel forms stable niobium carbide with carbon in steel. It is evenly distributed at the grain boundaries of steel, preventing the grain growth of steel at high temperatures, refining the structure of steel, and improving the strength, toughness, and creep properties of steel.

Niobium plays a role in solid solution strengthening and carbide precipitation strengthening in high-temperature alloys, improving the yield strength and surface stability of high-temperature alloys. Niobium is one of the lighter refractory metals, and is also one of the factors for the large-scale use of high-temperature alloys. Niobium-nickel alloy is used as an additive to nickel-based high-temperature alloys, mainly to produce 718 alloy. Adding niobium to permanent magnet alloys can improve the coercive force of the alloy.

Adding niobium to cast iron helps the formation of spheroidization and pearlite structure. It plays a role in inoculating and refining the structure of castings. Niobium can improve the strength, toughness, hardness and service life of castings at high temperatures. Electric welding rods use ferroniobium as a solder component to improve welding quality.