Military and Defense Applications
Defense spending on germanium-dependent systems is projected to grow 5.2% annually through 2026, reaching 68+ metric tons of germanium consumption. The U.S. Department of Defense has designated germanium as a strategic material critical to military superiority.
Germanium Consumption: Defense vs. Commercial (metric tons)
Source: DoD Strategic Materials Office; USGS; CRU Group
Thermal Imaging Systems
Thermal imaging represents the single largest consumer of germanium in military applications, accounting for approximately 35% of defense-sector germanium demand. Forward-looking infrared (FLIR) pods mounted on fighter aircraft, attack helicopters, and armed unmanned aerial vehicles detect thermal signatures of enemy targets through cloud cover, dust, and complete darkness. These systems are non-negotiable for modern military air operations.
The F-35 Joint Strike Fighter program alone requires germanium optics for its Distributed Aperture System (DAS) and Electro-Optical Targeting System (EOTS), each containing significant quantities of germanium. NATO allies are similarly equipping their air forces with thermal imaging systems. Each advanced fighter-mounted FLIR pod contains 200-500 grams of germanium, and production programs supply dozens of new aircraft to military forces annually.
Defense Germanium by Application (2025)
Electronic Warfare Systems
SiGe (silicon-germanium) semiconductor technology powers electronic warfare systems that detect and counter enemy radar and communications. SiGe HBT devices operating at 20+ GHz enable ultra-wideband signal detection and interference generation across the RF spectrum. Military electronic warfare pods mounted on aircraft contain multiple SiGe chips that analyze threats and generate countermeasures in real-time.
The cost and size advantages of SiGe over III-V compound semiconductors make it the preferred choice for integrated EW systems where multiple RF bands must be covered simultaneously. Modern electronic warfare platforms depend on SiGe as a foundational technology. Each EW platform contains 5-15 grams of germanium in its RF front-end circuits.
Satellite Communications and Power
Military satellite systems depend on germanium in two critical areas: multi-junction solar cells for power generation and SiGe devices for RF communications. Military reconnaissance satellites, early-warning systems, and secure communication satellites all use germanium-based solar cells to convert sunlight to electrical power in the extreme radiation environment of space.
Each military satellite may contain 200-400 grams of germanium in its power system and communication electronics. With multiple countries operating extensive satellite constellations for military purposes, satellite systems represent a significant demand segment. The U.S. Space Force, USSF, is expanding military satellite procurement for resilient space-based command and control systems.
Strategic Material Designation
The U.S. Department of Defense has officially designated germanium as a strategic material critical to national defense. This classification reflects germanium's irreplaceable role in thermal imaging, electronic warfare, and space systems. NATO allies have similarly elevated germanium to strategic importance, prompting security of supply initiatives across Europe and North America.
Strategic material classification triggers government policies to secure supply chains, encourage domestic production, and maintain stockpiles. The Defense Logistics Agency (DLA) maintains germanium reserves to protect against supply disruptions. This policy framework provides long-term support for germanium supplier development outside China.
China's 2023 Export Controls
In July 2023, China restricted exports of germanium and gallium in apparent retaliation against U.S. semiconductor export controls. This action directly impacted Western military programs dependent on germanium optics and semiconductors. The incident accelerated Western defense department initiatives to diversify germanium supply and develop domestic refining capacity. By 2025, this strategic vulnerability has become a top acquisition priority for NATO defense ministries.
Supply Chain Diversification
China historically supplied 70-80% of global germanium refined products. The 2023 export restrictions catalyzed Western nations to reduce this dependency. The U.S. has increased germanium refining capacity at facilities in Alaska and the eastern United States. European producers including Umicore have expanded germanium production. By 2025-2026, Western-based germanium supply represents approximately 35-40% of global optical-grade material, up from 20-25% in 2022.
Military procurement is shifting toward suppliers that can guarantee supply-chain provenance and Western origin. This shift supports prices for Western-refined germanium and provides economic incentive for continued refining capacity expansion through 2026 and beyond. Defense budgets are accommodating higher materials costs to achieve supply security.
Defense Modernization Trends
Military forces worldwide are investing heavily in next-generation thermal imaging, autonomous systems, and space-based capabilities-all germanium-intensive. China is modernizing its military with advanced thermal and RF systems; Russia is expanding EW capabilities; and NATO is accelerating thermal imaging procurement for ground forces. These global modernization programs support projected germanium demand growth of 5-6% annually in the defense sector through 2026.
Emerging military technology areas including autonomous vehicles, AI-powered targeting systems, and hypersonic weapon guidance all incorporate germanium-based thermal and RF components. As military spending growth accelerates in response to geopolitical tensions, germanium demand is expected to grow faster than the broader semiconductor and materials markets.
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Ph.D. Strategic Studies, Naval Postgraduate School
Defense Materials Analyst at Invest In Germanium