China’s Rare Earth Controls Put Aerospace Supply Under Pressure

China’s latest rare earth controls are no longer just a mining or trade story. For aerospace and defence manufacturers, the pressure point is the specialised heavy rare earth content inside high-temperature permanent magnets, sensors, actuators and guidance systems.

China weaponizes export controls against U.S. rare earth champions

Beijing has imposed new export restrictions targeting ten U.S. firms, including MP Materials and USA Rare Earth, two of the most strategically important players in Washington’s rare earth strategy.12[7] These measures restrict Chinese companies from shipping specified rare earth metals, dual use goods and technologies, and bar any party globally from transferring Chinese origin dual use products to those firms.2[7] The move is explicitly framed as retaliation for the Pentagon’s recent expansion of its blacklist of Chinese tech and defense related companies.12

From a supply chain perspective, the controls are narrow but symbolically powerful. MP Materials operates Mountain Pass, the only active rare earth mine in the United States, and has been expanding processing capacity and downstream magnet ambitions backed in part by Pentagon support.126 USA Rare Earth is advancing the Round Top project in Texas and developing domestic neodymium magnet capacity, positioning itself as a key alternative supplier of Nd, Dy, Tb and other magnet metals.23

Both firms have been working to localize supply chains and reduce exposure to Chinese inputs since China’s earlier export controls on key rare earth elements and magnets in April 2025.2 However, processing, separation and magnet manufacturing remain deeply entangled with Chinese technology, equipment and intermediate products. The new controls therefore introduce incremental operational and technology risk rather than an immediate material shortage.

For U.S. policy, the move underscores how far China is willing to go to defend its critical minerals position. It also validates Western concerns that rare earths can be used as a geopolitical lever, thereby reinforcing domestic support for reshoring, diversification and stockpiling policies.

G7 caps rare earth dependence on single suppliers, targeting China

Against this backdrop, Group of Seven countries have agreed to limit imports of rare earths from any single non G7 supplier to below 60 percent by 2030.2 While not explicitly naming China, the target is clearly designed to curb excessive reliance on Chinese production and processing, which still dominates global rare earth and magnet supply chains.25

The practical implications are significant for project pipelines outside China. To meet the 60 percent cap, G7 economies and partners will need to accelerate:

- New mining projects in North America, Europe, Australia and selected emerging producers.
- Expansion of separation facilities and magnet manufacturing capacity in friendly jurisdictions.
- Long term offtake agreements and strategic reserves to underpin financing.

For investors, G7 policy signals a multi year structural demand for non Chinese rare earths and magnet materials. This supports both established producers like MP Materials and earlier stage developers such as USA Rare Earth, albeit with a policy driven, rather than commodity price driven, risk profile.25

U.S. policy support and DOE strategy broaden the critical materials frame

The U.S. Department of Energy’s Critical Minerals and Materials strategy continues to frame rare earths within a broader basket of energy transition and advanced manufacturing inputs, including lithium, cobalt, nickel, PGMs, gallium and germanium.[8] DOE’s pillars focus on diversifying supply, developing substitutes, improving efficiency, and investing in recycling.[8]

In rare earths specifically, DOE and other U.S. agencies have been supporting:

- Pilot and commercial scale separation and magnet projects.
- R&D into magnet chemistries that reduce or eliminate the need for the scarcest heavy rare earths.
- Recycling from wind turbines, EV motors and defense systems.

China’s latest export actions effectively strengthen the case for those policies. As export controls expand from raw materials to equipment and know how, Western projects become more reliant on domestic technology development and alliances with Japan, Korea, Europe and Australia.

Market sentiment and equities: policy premium, valuation risk

Rare earth and critical minerals equities have rallied on policy momentum and supply chain reshoring themes. U.S. producers like MP Materials and developers such as USA Rare Earth have seen substantial share price moves tied to strategic deals and policy support.56 MP Materials reported positive adjusted earnings of $0.03 per share in Q1 2026, signaling that at least one U.S. rare earth miner is edging toward more sustainable profitability while still heavily exposed to policy and price cycles.6

Analysts highlight several drivers:5

- Geopolitical tailwinds as the U.S. and allies prioritize critical minerals security and reduce dependence on China.25[8]
- Rising demand from EVs, wind turbines and defense systems, driven by high performance magnet requirements.5[8]
- Deal flow and offtake agreements that de risk project financing and support expansions.

At the same time, valuations for many rare earth and critical minerals plays are stretched, with limited current cash flow and substantial execution, permitting and cost risks.5 Export policy moves from China introduce additional uncertainty, particularly around project economics that assume access to Chinese equipment or intermediate products.

Global supply growth and continued Chinese dominance

Global rare earth metals production climbed from roughly 132,000 metric tons in 2017 to about 390,000 metric tons in 2024, reflecting both demand growth and capacity expansion.5 Yet despite this growth, China still controls a dominant share of both mined output and, more critically, refining and magnet manufacturing.25

The latest export controls serve as a reminder that ownership of mines outside China does not equate to supply chain independence. Separation, metal making, alloying and magnet production are where Chinese companies retain the strongest advantage. Western strategies that stop at mining risk underestimating the midstream bottlenecks.

Strategic implications for supply chains and geopolitics

The current news cycle points to three structural themes for rare earth supply chains:

1. Geopolitical entrenchment: The U.S.–China rivalry over critical minerals is now embedded in export control regimes on both sides, with rare earth miners and magnet producers directly in the crosshairs.12[7]

2. Policy linked demand: G7 import caps and U.S. DOE strategies indicate that a large share of future demand for non Chinese rare earth supply will be policy driven. This creates long planning horizons but also exposes projects to political cycles and implementation risk.25[8]

3. Full chain diversification imperative: Mining alone is no longer sufficient. Major consuming economies will need integrated strategies that cover mining, separation, metal and magnet production, recycling and technology development to materially reduce strategic vulnerability.5[8]

For an industry analyst, the key watchpoints over the next few quarters will be:

- How MP Materials and USA Rare Earth adapt to the new Chinese controls, including any shifts in capex, technology partnerships and customer communication.12
- Concrete implementation plans from G7 governments to meet the 60 percent import cap, particularly in permitting, financing and support for midstream capacity.2
- DOE and allied agencies’ next round of funding and program announcements across magnet manufacturing, recycling and heavy rare earth substitution.[8]

Taken together, the latest headlines reinforce that rare earths are not just a commodity story but a central axis of industrial policy and geopolitical competition, with China’s actions serving both as a near term risk and a long term catalyst for supply chain realignment.


Aerospace angle: the stress is concentrated in high-temperature magnetic materials rather than bulk rare earth ore. Aerospace actuators, motors and guidance systems often need samarium-cobalt magnets or NdFeB magnets modified with dysprosium and terbium to hold performance under heat. Export licences, customer-specific approvals and restricted heavy rare earth flows therefore hit component makers before they hit headline mine supply.