ANTIMONY (SB)
CRITICAL RISK
Overview
A lustrous metalloid used in ammunition primer compounds, flame retardants, semiconductors, and lead-acid battery systems. Antimony plays a disproportionately important role in military ammunition manufacturing despite relatively low public visibility compared to other critical minerals.
Strategic importance
Antimony is required for ammunition primer compounds used in small arms ammunition, artillery shells, and military munitions production. It is also used in night-vision semiconductor systems, flame retardants, and lead battery technologies supporting military infrastructure and industrial manufacturing.
Risk score
95/100
Primary use cases
Global supply chain map
Key stats
Known reserves~2M tons reserves. China ~50% of production; ~60–70% of refining.
# of producing countries4
Global production (2023)—
China share of refining—
Export controls—
Producing countries
Defense & flow
Defense capability exposure
| Capability area | Exposure level | Score |
|---|---|---|
| Artillery Ammunition Production | CRITICAL | 5 |
| Small Arms Manufacturing | CRITICAL | 5 |
| Night Vision Systems | HIGH | 4 |
| Military Industrial Production | HIGH | 4 |
| Strategic Battery Infrastructure | MEDIUM | 3 |
Strategic impact
Antimony supply chains directly affect ammunition manufacturing capacity and therefore combat sustainment rates. A major disruption in antimony refining or export access would constrain artillery shell production, small arms ammunition manufacturing, and portions of the defense-industrial base. Unlike many critical minerals associated with long-term industrial transformation, antimony has immediate implications for wartime munitions output and operational readiness.
Supply chain control
China
Historically dominant in mine/refined antimony supply and export leverage.
Risk indicators
- China produces ~50%; export controls imposed September 2024
- Constraints could cap U.S. artillery output within 24–36 months of conflict onset
- Received less press than Ga/Ge controls but may have the most direct combat readiness impact
Risk & challenge analysis
China maintains dominant control over both mined and refined antimony supply chains and imposed export restrictions in September 2024. Antimony's role in ammunition primers creates a direct dependency between mineral access and artillery production capacity. Current Western stockpiles and domestic production capacity may be insufficient to sustain prolonged high-intensity conflict without reliable imported supply.
Strategic insight
The 2024 antimony export restrictions received significantly less public attention than gallium and germanium controls but may represent one of the most operationally important mineral constraints for near-term military readiness. In a prolonged conflict scenario, antimony shortages could emerge as a hard cap on ammunition production rates far earlier than many defense planners anticipate.
Value chain — key companies
UPSTREAM
Extraction & mining
- Hunan Gold
- Perpetua
MIDSTREAM
Refining & processing
- Chinese refiners
DOWNSTREAM
Manufacturing & end use
- Ammunition manufacturers
- Flame retardant producers
◎
Key chokepoint
Chinese export leverage
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