What is niobium? It is a silvery, refractory transition metal (symbol Nb, atomic number 41) prized for its ability to withstand extreme heat, resist corrosion, and boost the strength of steel and superalloys at additions of less than 1%. Classified as a critical mineral by the US, UK, EU, and Australia, niobium sits at the centre of steel manufacturing, jet engine production, and superconducting technology, with global supply concentrated almost entirely in a single country.
What Is Niobium? Properties and Characteristics
Niobium is a light grey, body-centred cubic metal with a melting point around 2,470°C, making it one of the more heat-tolerant elements available for industrial use. In its pure form it is soft and ductile, similar in workability to iron, but it hardens rapidly once alloyed with other metals. Niobium also naturally forms a thin, stable oxide layer on its surface, which gives it strong resistance to acids and weathering without any additional coating.
The property that sets niobium apart from most other refractory metals is superconductivity. Below roughly 9.2 Kelvin, niobium loses all electrical resistance, giving it the highest critical temperature of any elemental superconductor. This makes niobium-titanium and niobium-tin alloys the standard wire material for the superconducting magnets used in MRI scanners and particle accelerators, including the Large Hadron Collider.
What Is Niobium Used For?
The dominant answer to what is niobium used for is steel. Around three-quarters of global niobium consumption goes into high-strength low-alloy steel, added as ferroniobium (an iron-niobium alloy typically 60-70% niobium). Even trace additions under 0.1% meaningfully increase the strength and weldability of steel used in pipelines, structural beams, and automotive frames, allowing manufacturers to use less material for the same load-bearing performance.
The second major use is aerospace superalloys. Blended with nickel, cobalt, and iron, niobium forms alloys such as Inconel 718 that hold their strength at the extreme temperatures found inside jet engines, gas turbines, and rocket nozzles. Niobium-based superalloys also feature in the propulsion systems of hypersonic missile programmes, giving the metal a direct defence-sector application beyond civil aerospace.
Beyond steel and superalloys, niobium is used in superconducting MRI magnets, as a biocompatible material for pacemakers and surgical implants, and in hypoallergenic jewellery, where anodization produces a range of vivid colours on the metal’s surface without dyes or paints.
Where Is Niobium Produced?
Niobium is never found as a free metal in nature. It is extracted from ore bodies, primarily pyrochlore and columbite, that are typically associated with carbonatite intrusions. Production is among the most geographically concentrated of any critical mineral: Brazil accounted for roughly 93% of global mine output in 2025, with the remainder coming almost entirely from Canada.
Brazil’s dominance rests on two carbonatite-hosted deposits in Minas Gerais and Goiás, while Canada’s Niobec mine in Quebec supplies most of the rest of the world’s material. The United States has no active niobium mine and imports 100% of its supply, mostly as ferroniobium from Brazil and Canada. A project in development in Nebraska aims to become the first US niobium mine and processing facility, and in 2025 the US Department of War awarded the developer funding to support a domestic supply chain, though the mine is not yet in production. For sourcing and full production tables, USGS maintains detailed niobium and tantalum statistics.
Niobium Price and Market
Niobium is priced primarily as niobium pentoxide and ferroniobium, with figures updated monthly against SMM benchmark data. Given the concentration of supply in Brazil, prices are sensitive to export volumes and shifts in Chinese import demand, since China is the largest single destination for Brazilian ferroniobium exports. For current spot figures, historical pricing, and currency and weight conversions, see the niobium price page.
Niobium Supply Chain Risks
The central supply chain risk with niobium is concentration rather than scarcity. With one country supplying more than 90% of global output and a second supplying most of the remainder, any disruption to Brazilian production or export policy has an outsized effect on global availability, and there is no meaningful alternative producer able to absorb a shortfall quickly. This concentration is a large part of why niobium appears on critical minerals lists in the US, UK, EU, and Australia despite reserves being more than adequate to meet long-term demand.
For steelmakers, there are partial substitutes available, including molybdenum and vanadium in high-strength low-alloy steel, though each comes with a performance or cost trade-off. For aerospace superalloys, substitution options are narrower, which keeps niobium on watch lists for Western governments building resilient defence supply chains. For more on how this fits into the wider defence procurement picture, see CMN’s coverage of the critical minerals defence supply chain and the Pentagon’s critical minerals strategy.
This article is for informational purposes only.
What is niobium and what is it used for?
Niobium is a refractory transition metal used mainly to strengthen steel and to make superalloys for jet engines and rocket components. Smaller amounts go into superconducting magnets, medical implants, and hypoallergenic jewellery.
Why is niobium considered a critical mineral?
Niobium is essential to steel and aerospace manufacturing, has no close substitute for several key applications, and global production is concentrated in a small number of countries, creating supply chain risk for importing nations.
Who produces the most niobium?
Brazil is by far the largest producer, supplying the vast majority of the world’s niobium. Canada is the only other country with meaningful commercial production.
What is the current niobium price?
Niobium prices move with SMM benchmark data and shift monthly. Current spot figures and historical pricing are tracked on CMN’s niobium price page.
What are the main supply chain risks for niobium?
The primary risk is production concentration: with almost all global supply coming from one or two countries, any disruption to mining or export policy in that region has an outsized effect on global availability.
Does China control niobium supply?
China is not a major niobium producer, but it is the largest destination for Brazilian niobium exports, giving it significant influence as the dominant buyer even without controlling production.
