Cobalt is a hard, lustrous, silver-grey metal classified as a critical mineral by the United States, European Union, and United Kingdom governments. Atomic number 27, cobalt is prized for its ability to retain magnetic properties at high temperatures and its electrochemical stability — properties that make it essential to rechargeable batteries, aerospace superalloys, and cutting tools. Global cobalt supply is heavily concentrated in the Democratic Republic of Congo, which accounts for approximately 70% of mined output, creating supply chain risks that governments and manufacturers are actively working to reduce.
What Is Cobalt? Properties and Characteristics
Cobalt (Co) is a transition metal with an atomic weight of 58.93 and a melting point of 1,495°C. It is ferromagnetic — meaning it retains magnetism — at temperatures up to 1,115°C (its Curie point), the highest of any element after iron and nickel. This thermal stability is the physical basis for cobalt’s dominance in high-temperature alloy applications.
Cobalt does not occur naturally in pure form. It is extracted almost exclusively as a by-product of copper and nickel mining, which creates a structural supply constraint: cobalt output is largely driven by the economics of its host metals rather than cobalt demand itself. This dynamic contributes to price volatility and long-term supply uncertainty.
The metal is traded in two primary forms. Class 1 cobalt is refined to 99.8% purity or above and is deliverable against the London Metal Exchange (LME) cobalt contract. Class 2 cobalt covers intermediate products — cobalt hydroxide, cobalt sulfate, and cobalt oxide — which are the dominant feedstock forms in battery supply chains. The two markets price differently and serve distinct end-use sectors.
What Is Cobalt Used For?
Cobalt has four primary application clusters: rechargeable batteries, superalloys, hard metals, and chemical uses including pigments and catalysts.
Rechargeable batteries are the largest and fastest-growing end-use, accounting for approximately 60% of global cobalt demand. Lithium-ion cathode chemistries — particularly lithium cobalt oxide (LCO), nickel manganese cobalt (NMC), and nickel cobalt aluminium (NCA) — rely on cobalt to stabilise the cathode structure and improve energy density. Electric vehicles, consumer electronics, and grid-scale energy storage all draw on this demand base. Battery manufacturers have worked to reduce cobalt intensity per cell, but elimination has proved difficult in high-performance applications where energy density and thermal stability are critical.
Superalloys account for roughly 17% of demand. Cobalt-based superalloys and nickel superalloys with cobalt additions are used in jet engine turbine blades, gas turbines for power generation, and industrial processing equipment. The defence and aerospace sectors depend on cobalt-containing alloys for components that must perform reliably at extreme temperatures. Superalloy revert — the recycling of used aerospace alloys — is a growing source of secondary cobalt supply, processed by specialist companies including Advanced Alloy Services in the UK.
Hard metals and cutting tools use cobalt as a binder in cemented carbide (WC-Co) tools, drill bits, and wear-resistant coatings. This application represents approximately 8% of demand and is closely linked to industrial manufacturing activity.
Chemical applications — including cobalt-based catalysts for petroleum refining, cobalt driers in paints, and cobalt pigments (cobalt blue) — account for the remaining balance of demand.
Where Is Cobalt Produced?
The DRC dominates global cobalt mining by a wide margin. According to the USGS Mineral Commodity Summaries 2025, the DRC produced approximately 170,000 tonnes of cobalt in 2024, representing around 70% of world mine output. The Katanga Copperbelt, straddling the DRC and Zambia, hosts the world’s richest known cobalt deposits, typically found alongside copper mineralisation.
The largest mining operations in the DRC are controlled by major international producers. CMOC, the Chinese-owned base metals group, operates the Tenke Fungurume and Kisanfu mines and has become the world’s largest cobalt producer by volume. Glencore, listed in London, operates the Mutanda and Katanga mines and remains a dominant force in cobalt marketing. Both companies process cobalt hydroxide as the primary output, which is then refined — largely in China — into battery-grade cobalt sulfate.
Outside the DRC, meaningful cobalt production occurs in Australia, the Philippines, Russia, Cuba, and Papua New Guinea. Vale Base Metals produces cobalt as a by-product of nickel operations in Canada and Brazil. Western governments have identified diversification of cobalt supply away from the DRC-China axis as a strategic priority, funding exploration and processing projects in North America, Australia, and Europe under programmes including the US Defence Production Act and the EU Critical Raw Materials Act.
Cobalt Price and Market
Cobalt is traded on the London Metal Exchange, which provides the benchmark reference price for Class 1 metal. Prices are quoted in US dollars per tonne. The cobalt market is relatively illiquid compared to base metals such as copper or nickel — the LME contract sees limited daily volume — and pricing is heavily influenced by Chinese demand, DRC supply developments, and cathode chemistry trends.
Cobalt prices are volatile. The metal peaked above $95,000 per tonne in 2018 during an EV demand surge before collapsing to below $30,000 by 2019 as DRC supply expanded rapidly. A secondary rally in 2021–2022 was followed by another sustained decline as battery manufacturers accelerated the shift to lower-cobalt and cobalt-free chemistries such as lithium iron phosphate (LFP).
For current benchmark pricing, see the cobalt price tracker, updated monthly with LME spot data, historical price series, and market outlook.
Cobalt Supply Chain Risks
Cobalt carries a higher supply risk than most critical minerals. Three structural vulnerabilities define the market.
Geographic concentration: The DRC’s 70% share of mine supply means any disruption — political instability, flooding, export policy changes, or artisanal mining crackdowns — has an outsized global impact. The DRC has a documented history of supply disruptions, including the Glencore Mutanda mine suspension in 2019 that tightened markets almost immediately.
Refining dependency on China: Even where cobalt is mined outside China, the majority of cobalt hydroxide intermediate product is shipped to China for refining into battery-grade cobalt sulfate. Chinese refiners control approximately 70–80% of global cobalt refining capacity. Western battery supply chains attempting to reduce Chinese dependency face a refining bottleneck that will take years and significant capital to resolve.
By-product supply dynamics: Because cobalt is mined as a by-product of copper and nickel, production cannot be ramped up independently in response to cobalt-specific demand signals. When copper or nickel prices weaken, mines may curtail output or delay expansion, reducing cobalt supply as a secondary consequence regardless of cobalt market conditions.
Western governments have responded with strategic stockpiling programmes, offtake agreements with DRC producers, and investment in alternative supply chains. For analysis of how these risks rank against other technology metals, see the top cobalt producers guide.
This article is for informational purposes only and does not constitute investment advice.
What is cobalt?
Cobalt (Co) is a hard, silver-grey transition metal with atomic number 27. It is classified as a critical mineral by the US, EU, and UK due to its essential role in rechargeable batteries, aerospace superalloys, and defence applications. It is primarily mined as a by-product of copper and nickel.
What is cobalt used for?
Cobalt’s largest application is rechargeable batteries, accounting for approximately 60% of demand — primarily lithium-ion cathodes in electric vehicles and consumer electronics. Other major uses include jet engine superalloys (around 17% of demand), cemented carbide cutting tools, petroleum refining catalysts, and industrial pigments.
Who produces the most cobalt?
The Democratic Republic of Congo accounts for approximately 70% of global cobalt mine output, making it by far the dominant producer. The largest operators in the DRC include CMOC and Glencore. Australia, the Philippines, Russia, and Canada are significant secondary producers.
What is the current cobalt price?
Cobalt is traded on the London Metal Exchange (LME) in US dollars per tonne. Prices are volatile — the metal peaked above $95,000/t in 2018 before falling sharply. For the current LME spot price and monthly price history, see the cobalt price tracker on this site.
Why is cobalt a critical mineral?
Cobalt is classified as critical due to its high economic importance, the concentration of supply in a small number of politically unstable countries (primarily the DRC), and the lack of short-term substitutes in high-performance battery and aerospace applications. Western governments have designated cobalt as a strategic material requiring supply chain diversification.
What is the difference between Class 1 and Class 2 cobalt?
Class 1 cobalt is refined to 99.8% purity or above and is deliverable against the LME contract. Class 2 covers intermediate products — cobalt hydroxide, cobalt sulfate, and cobalt oxide — which are the primary feedstock for battery cathode manufacturing. The two categories trade at different prices and serve distinct market segments.
