Tb

Terbium

Risks

Terbium Supply Risks and Vulnerabilities

Terbium faces a high supply risk rating driven by 98% production concentration in China, processing bottlenecks, and growing demand pressures from permanent magnets (ndfeb additive) and green phosphors for displays.

Supply Risk

High

Overall rating

Top Producer Share

98%

China

Recycling Rate

1%

Secondary supply

Criticality

High

Geographic Concentration Risk

Terbium production is extremely concentrated, with China controlling approximately 98% of global output. This near-monopoly position creates acute vulnerability to country-specific disruptions. The full list of major producers includes China, Myanmar, Australia.

Geopolitical and Trade Risks

The geopolitical landscape for Terbium is shaped by trade tensions, export restrictions, and resource nationalism. As a high supply risk material, Terbium trade flows are particularly vulnerable to geopolitical disruption. Producing countries may leverage supply dominance for strategic advantage, while consuming nations respond with diversification and stockpiling policies.

Historical Risk Events

The Terbium market has experienced the following notable disruptions and developments:

2010-2011

Terbium prices surged from ~$500/kg to over $4,500/kg during Chinas rare earth crisis; one of the hardest-hit heavy rare earths

2022

Grain boundary diffusion technology using terbium (alongside dysprosium) gained traction for reducing total heavy REE content in EV magnets

2024

US Navy concerns about Terfenol-D supply chain led to DPA investments in magnetostrictive material production

Demand-Supply Imbalance Risks

Growing demand driven by permanent magnets (ndfeb additive) and green phosphors for displays is expected to strain existing supply capacity. The long lead times for new mining projects (typically 10-20 years) mean supply responses are inherently delayed. With only 1% end-of-life recycling, secondary supply provides limited relief.

Risk Mitigation Strategies

Strategies to mitigate Terbium supply risks include geographic diversification (1 tracked projects outside China), recycling infrastructure development, substitution research, strategic stockpiling, and diplomatic resource partnerships. The high criticality of Terbium makes comprehensive risk mitigation a priority for government and industry.

Return to the Terbium hub page or browse the full Mineral Library.