Critical Minerals Defense Supply Chain Risk Scanner
Mineral Profiles Used by the Scanner
| Element | China share | US import reliance | Spot price | Defense use |
|---|---|---|---|---|
| Antimony (Sb) | 65.0% | 100% | $17.5/lb ($38,500/ton) | 155mm artillery primers, armor-piercing munitions, FLIR infrared optics, military vehicle battery hardening. |
| Gallium (Ga) | 98.5% | 100% | $1,950/kg | GaN RF power amplifiers for F-35 AN/APG-81 AESA radar and Aegis destroyer SPY-6 air defense radar. |
| Germanium (Ge) | 72.0% | 50% | $2,800/kg | Infrared night vision optics for AH-64 Apache, M1A2 Abrams thermal sights, GPS III satellite solar arrays. |
| Heavy Rare Earths (Dysprosium & Terbium) (Dy/Tb) | 99.5% | 100% | $1,450/kg (Dy) / $1,850/kg (Tb) | Thermal stabilization additives in NdFeB permanent magnets for Tomahawk cruise missiles and nuclear submarine electric propulsion. |
Critical Minerals Supply Chain Risk Scanner
Score how exposed US defense production is to Chinese export controls on antimony, gallium, germanium and heavy rare earths, by mineral, embargo severity, spot price and stockpile runway.
How the Vulnerability Score Works
The score (0-100) weights import reliance (35%), stockpile runway against a 24-month benchmark (35%) and embargo severity (30%). The scanner also estimates the price premium over the pre-ban antimony baseline and the resulting munitions supply deficit.
Worked example with the default inputs (antimony, 80% embargo severity, $17.5/lb, 5.2 months of stockpile): vulnerability score 83 (SEVERE / CRITICAL), price premium 182%, munitions deficit 88%.
Weapon Systems Exposure
| Weapon system | Vulnerability |
|---|---|
| 155mm Artillery Shells (M795/M1128) | CRITICAL |
| F-35 Fighter AN/APG-81 AESA Radar | VERY HIGH |
| Virginia & Columbia Class Submarines | HIGH |
| AH-64 Apache Modernized Target Acquisition (M-TADS) | MODERATE |
Background and the full export-control timeline: China Rare Earth Export Ban hub.