F-35 Rare Earth Elements: How Many Kilograms Go Into One Fighter Jet? (2026 Update)

How Much Rare Earth Goes Into a Fighter Jet and Why the West Has a Problem

Executive insight: The question “how many rare earth elements sit inside a fighter jet” sounds academic until production lines slow down because a single samarium-cobalt magnet fails a security review. Depending on the source, rare earth content in an F-35 is either “more than 900 lb” (the Pentagon’s legacy figure) or a few tens of kilograms of pure metal (Adamas Intelligence’s 2026 audit) — but in either accounting almost every kilogram is embedded in a function that cannot simply be designed out: flight control actuators, radar, electronic warfare, and power generation. That is where dependency becomes structural.

The core operational question is straightforward: how exposed are Western combat air fleets, in practice, to disruptions in rare earth mining, separation, and magnet fabrication? Once the mass of neodymium, praseodymium, samarium, dysprosium, and terbium inside each airframe is quantified, it becomes clear that this is no longer a niche materials issue; it is an availability and readiness constraint for front‑line platforms.

Materials Dispatch’s view is that rare earth exposure in airpower is fundamentally a magnet problem. Catalysts, phosphors, and polishing powders matter, but they do not ground fleets. Permanent magnets in actuators and sensors can. That is why NdFeB and SmCo magnet chains sit at the center of this analysis of rare earth elements fighter jet dependency.

What changed since May 2026

• May 2026 — Pentagon “Deal Team Six” unveiled (up to US$200bn over three years); Trump–Xi Beijing summit yields a Chinese pledge to “address” yttrium, scandium, neodymium and indium shortages but no lifting of the April 2025 licensing; FT reports defense primes lobbying for a second delay of the 1 January 2027 DFARS magnet ban; DLA orders NdFeB blocks from eVAC and Noveon (US$12.9m each).
• June 2026 — Reuters/USCBC: SmCo magnets and yttrium “nearly unobtainable” in China (10 Jun); GAO F-35 sustainment report (11 Jun); US$500m OSC loan to Phoenix Tailings (16 Jun); MP Materials and USA Rare Earth placed on China’s export-control list (22 Jun); Energy Fuels to acquire VAC/eVAC for ~US$1.9bn (23 Jun); Silverado: zero controlled rare earths shipped China→US in May (26 Jun).
• July 2026 — Pentagon marks GAO’s annual F-35 production report CUI (15 Jul); Executive Order 14415 ends routine magnet waivers from 1 Jan 2027 (20 Jul); Bloomberg: US-bound Chinese magnet exports 20% below baseline in H1 (20 Jul); House passes FY2027 NDAA H.R. 8800 with tiered magnet sourcing (22 Jul); Lockheed Q2 results (23 Jul); Reuters: US industry not ready for the 2027 deadline (27 Jul); DPA §101 determination on recoverable minerals (30 Jul).
• August 2026 — AP: US needs 50–100 t/yr of samarium against ~200 kg/yr non-Chinese output (3 Aug); Reuters: Lockheed seeking direct US supply of scandium (NioCorp, ~15 t/yr) and germanium (4 Aug); MP Q2: Dy/Tb circuit commissioning, magnets revenue US$16.5m, commercial magnets Q4 2026 (6 Aug); China July rare-earth exports 4,224 t, –29.5% y/y (7 Aug); Silverado: the US is the only major destination receiving less magnet volume in H1 2026 than in H1 2024 (14 Aug).
• Coming — 24 Sep 2026 Xi visit to the US; 10 Nov 2026 expiry of China’s October-2025 suspension; 1 Jan 2027 full DFARS mine-to-magnet ban and end of routine waivers — a “double cliff” 52 days apart.

What Sits Inside a Fighter: F‑35 as a Reference Case

The headline number in circulation is approximately 920 lb, or 417–418 kg, of rare earth elements per F-35.¹ Its provenance is thinner than its ubiquity suggests: it appears as a single sentence in a December 2013 Congressional Research Service report (R41744) citing an unreleased September 2012 DoD study on rare-earth recycling, and the Pentagon still repeats “more than 900 lb” in its mine-to-magnet communications. No platform bill of materials has ever been published. In April 2026 Adamas Intelligence published a bottom-up audit concluding that an F-35 contains roughly 40–70 kg of finished rare-earth-bearing material and 11–20 kg of pure rare earths — about 3–4% of the legacy figure — with the only robustly corroborated component being ~23 kg of samarium-cobalt alloy (roughly 5–6.5 kg of samarium) in the Honeywell integrated power package, plus an estimated 8–20 kg of NdFeB alloy (3–6 kg of neodymium, praseodymium, dysprosium and terbium).^{Adamas 2026} Materials Dispatch treats 417 kg as an unaudited legacy figure and the Adamas range as the better-supported estimate; readers should cite both. Whatever the total, the distribution is not uniform, and a simplified breakdown illustrates the structure of dependency:

• NdFeB permanent magnets (neodymium-iron-boron), with neodymium and praseodymium as principal rare earth inputs, serving motors, generators, and many actuators.
• SmCo magnets (samarium–cobalt), where samarium and heavy rare earth dopants provide high coercivity and temperature stability for engine‑adjacent and high‑radiation environments.
• Heavy rare earth dopants such as dysprosium and terbium to increase magnet coercivity in NdFeB magnets, particularly in high‑temperature zones.
• Specialty alloys and phosphors using gadolinium, yttrium, and others in sensing, thermal management, and certain laser or display components.

The AN/APG-81 AESA radar (being replaced by the APG-85 on new-build jets), the Distributed Aperture System, the Electro-Optical Targeting System (Nd:YAG laser components), the F135 engine’s yttria-stabilized-zirconia thermal-barrier coatings, and the fly-by-wire control architecture all make use of rare earth magnets and materials; note that gallium nitride in the radar is not a rare earth. SmCo magnets appear in the integrated power package, actuators and engine subsystems that operate at temperatures where NdFeB magnets would demagnetize or age unacceptably. NdFeB magnets, in turn, dominate where high power density and compact form factor are paramount, such as compact electric motors and generators in the electrical power system.

Visualizations of U.S. defense rare earth use compiled by Visual Capitalist from U.S. government data highlight the same pattern across platforms: fighter jets, precision munitions, and missile defense systems are all magnet‑intensive, with the F‑35 singled out as one of the most REE‑intensive systems in the U.S. inventory.² In other words, rare earth exposure is baked into the airframe’s architecture rather than concentrated in any single bolt‑on subsystem.

Beyond the F‑35: Eurofighter, Rafale, and Naval Platforms

There is far less public, quantified data for Eurofighter Typhoon and Dassault Rafale, but architecture analysis points to similar qualitative dependency levels. Both aircraft rely on:

• AESA radars (CAPTOR‑E for Eurofighter, RBE2‑AA for Rafale) that use rare earths in transmit/receive modules and associated power electronics.
• Electro‑hydrostatic and electro‑mechanical actuators for primary and secondary flight control surfaces, driven by permanent magnet motors.
• High‑reliability generators and starter–generators on the engine providing electrical power under harsh thermal conditions.
• Advanced electronic warfare suites and optronics systems that again lean on REE‑based magnets, phosphors, and specialty ceramics.

Industry commentary sometimes extrapolates that Eurofighter and Rafale incorporate rare earth quantities in the same range as the F‑35 once magnets, sensors, and materials are counted; given that the F-35 figure itself is contested by a factor of twenty, Materials Dispatch does not endorse any tonnage estimate for European fighters — only the qualitative dependency.^3,5 The exact mix between light and heavy rare earths will differ (for example, the share of HREE dopants in radar vs. actuator magnets), but from a supply chain standpoint, the broad exposure looks similar.

The dependency is even more visible in naval combatants equipped with high‑power electric drives and complex sensor suites. The same 2013 CRS report gives 5,200 lb (~2,360 kg) for an Arleigh Burke‑class destroyer and 9,200 lb (~4,170 kg) for a Virginia‑class submarine (widely re-circulated, including by Visual Capitalist, sometimes rounded up to 2,600 kg and 4,600 kg); Benchmark Mineral Intelligence figures cited by Foreign Policy in August 2025 run higher (>5,700 lb and >10,000 lb). All share the same unaudited 2012 origin.^1,2 When those numbers are benchmarked against fighter platforms, a structural conclusion emerges: naval assets concentrate more total rare earth mass per hull, but fighter production cadence makes narrow bottlenecks in magnet supply equally consequential.

Why Magnets Define Defense Rare Earth Exposure

Rare earths appear across industrial value chains, but in defense, permanent magnets are the load‑bearing application. For most non‑magnet uses – catalysts, polishing powders, glass additives – process engineers can often reformulate with non‑REE substitutes at some performance penalty. That substitution logic breaks down for high‑performance permanent magnets in critical systems.

NdFeB magnets deliver the highest energy product of commercially available magnets, enabling compact, high‑torque motors and generators. In fighters and naval vessels, these magnets power:

• Flight control actuators and back‑up actuation paths.
• Starter–generators and auxiliary power units.
• Fuel pumps, hydraulic pumps, and other rotating machinery where efficiency and reliability are paramount.
• Certain gimbal and pointing mechanisms for sensors.

SmCo magnets sacrifice some maximum energy product compared to NdFeB but maintain magnetization at significantly higher temperatures, often cited in the 250–350°C operating range for advanced grades, along with superior radiation resistance. This makes SmCo the material of choice for:

• Engine‑proximate actuators and control devices.
• High‑temperature sensors and alternators.
• Certain missile guidance and control applications where thermal cycling is extreme.

Samarium has become the headline story of 2026. The USGS 2025 criticality assessment ranked samarium the single most vulnerable mineral for the United States (October 2025); China refines roughly 99% of it; and the US-China Business Council told Reuters in June 2026 that SmCo magnets and yttrium were “nearly unobtainable” from China. US defense demand is on the order of 50–100 tonnes of samarium a year, against non-Chinese output of about 200 kg a year at Phoenix Tailings (targeting 5 t soon and ~120 t by 2027–28 with a US$500m Office of Strategic Capital loan approved 16 June 2026); Arnold Magnetic Technologies is sourcing samarium from Solvay’s La Rochelle plant via LCM. On the Adamas audit, the F-35’s ~23 kg of SmCo alloy is the platform’s most exposed rare-earth item.^{Reuters 2026; AP 2026}

The coercivity of both NdFeB and SmCo magnets in military applications is often enhanced by adding dysprosium and terbium, especially for NdFeB. Those heavy rare earths are geologically rarer and even more geographically concentrated than base light rare earths such as neodymium and praseodymium. That is why, from an operational risk standpoint, “rare earth magnets defense” is not just about volume; it is about specific dopants that enable the coercivity and stability demanded by mil‑spec actuators and sensors.

One structural finding stands out: in a fifth‑generation fighter, the rare earth bill of materials is less about the visible airframe and more about an invisible magnetic skeleton that holds the aircraft’s electronic nervous system together. That skeleton connects directly to a small number of specialized magnet plants, many still located in or dependent on processing steps in China.

China’s Dominance in the Defense Rare Earth Supply Chain

USGS and trade data consolidated by multiple research groups indicate that China accounts for a large share of global rare earth mining and an even higher share of separation and magnet production. Visual Capitalist’s widely circulated breakdown, drawing on U.S. government statistics, shows China as the dominant source of U.S. rare earth imports over recent years, frequently representing the majority of total import volumes.²

The concentration is particularly acute in NdFeB magnet manufacturing. Mining and primary concentration have begun to diversify – with Mountain Pass in the United States and Mount Weld in Australia prominent – but separation, metal making, and especially magnet alloying and sintering remain clustered in East Asia, with China as the central node. For samarium, dysprosium, and terbium, non‑Chinese separation capacity is materially smaller than for NdPr oxides, amplifying the exposure for SmCo and high‑coercivity NdFeB grades.

Policy actions have translated this structural concentration into direct supply risk. After controls on gallium and germanium in 2023, MOFCOM/GACC Announcement No. 18 of 4 April 2025 placed samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium — and magnets containing them — under dual-use export licensing with presumptive denial for military end-users; Chinese magnet exports fell 74% in May 2025. The October 2025 package (five more rare earths, a 0.1% extraterritorial content rule, an explicit military end-user ban and rare-earth technology controls) was suspended on 7 November 2025 until 10 November 2026, but the April 2025 regime was never suspended and remains in force in August 2026 (see the tracker). Trade data show the effect: Silverado counted zero controlled rare-earth compounds and metals shipped from China to the US in May 2026, US-bound magnet exports averaged 479 t/month in H1 2026 (20% below the 2022–24 baseline, per Bloomberg), and Beijing added MP Materials and USA Rare Earth to its export-control entity list on 22 June 2026. Magnet-grade rare earth materials are now firmly in the national security toolset, and licensing friction is no longer hypothetical for defense procurement calendars.

The F‑35 Alloy Incident: From Abstract Dependency to Production Impact

The 2022 discovery that a Chinese‑origin alloy had been used in a magnet within an F‑35 engine subsystem provided a concrete illustration of how deep rare earth dependency can penetrate supply chains. Deliveries were paused from 7 September 2022 after a Honeywell turbomachine (integrated power package) lubricant-pump magnet was found to contain Chinese-origin samarium-cobalt alloy; on 8 October 2022 the Under Secretary of Defense for Acquisition and Sustainment, William LaPlante, signed a national-security waiver covering roughly 126 aircraft so deliveries could resume.³

Technically, the magnet in question was not considered a cyber or intelligence risk vector in the same way a networked electronic component would be. The concern arose from procurement rules on specialty metals and dependencies on foreign adversaries for critical defense materials. Nonetheless, the episode revealed three important dynamics:

• The number of discrete magnets in a modern fighter is large, and tracing the full genealogy of each alloy batch is non‑trivial.
• Suppliers deep in the tiered supply chain may rely on globally sourced magnet alloys, often blended or processed in China, without that exposure being fully visible to the prime contractor or defense ministry.
• Regulatory and security reviews can halt deliveries even when the functional risk from the specific component is judged low, simply because origin requirements were not satisfied.

From an operational perspective, the episode functioned as a stress test for the defense rare earth supply chain. It confirmed that exotic magnets are no longer an obscure line item in engineering drawings; they can be single‑point constraints that determine whether completed airframes are accepted into service.

Non‑Chinese Rare Earth Projects: Capacity, Gaps, and Real Execution Constraints

In response, Western governments and prime contractors have turned toward a portfolio of non‑Chinese rare earth mining and processing projects. Public data from operators, government filings, and technical summaries indicate a clear hierarchy of relevance for defense magnet supply, especially where NdFeB magnets military needs are concerned.

Mountain Pass (United States) and Mount Weld (Australia) are the anchor upstream assets. Mountain Pass, operated by MP Materials, has reported tens of thousands of tonnes per year of REO concentrate output, alongside an ongoing build‑out of separation and magnet manufacturing capacity in the United States.^{MP Materials 2025} Mount Weld, operated by Lynas Rare Earths, feeds integrated separation facilities in Asia and, increasingly, in Australia, with a strong focus on NdPr oxides and some heavy rare earth output.^{Lynas 2025}

The defense-relevant story in 2026 is downstream, and it is happening in the United States. Status as of August 2026:

• MP Materials (Mountain Pass, Fort Worth “Independence”, Texas 10X) — record 917 t of NdPr oxide in Q1 2026; heavy-rare-earth (Dy/Tb) separation circuit mechanically complete in May 2026 and commissioning; first commercial NdFeB magnets from Independence guided for Q4 2026; the 10,000 t/yr 10X magnet plant in Texas targeted for 2028, all under the July 2025 DoD deal (US$400m preferred equity, US$110/kg NdPr price floor for ten years, 100% 10X offtake, US$150m heavy-rare-earth loan).^{MP 2026}
• eVAC (Vacuumschmelze) Sumter, South Carolina — first NdFeB shipments 12 December 2025, ~2,000 t/yr; DLA ordered NdFeB blocks in May 2026; VAC is being acquired by Energy Fuels for ~US$1.9bn (announced 23 June 2026).
• Noveon Magnetics (San Marcos, Texas) — ~2,000 t/yr sintered NdFeB, DLA block order May 2026.
• USA Rare Earth (Stillwater, Oklahoma) — magnet plant commissioned 26 March 2026; 600 t/yr by Q4 2026, 1,200 t/yr Q1 2027; first commercial yttrium metal produced in the UK in April 2026. Now on China’s export-control entity list.
• Vulcan Elements (Benson, North Carolina) — US$620m Office of Strategic Capital loan (plus US$80m for ReElement), 10,000 t/yr magnet target.
• Phoenix Tailings — US$500m OSC loan (16 June 2026) for rare-earth metals including samarium (see above).
• Ucore Louisiana Strategic Metals Complex — RapidSX separation, ~600 t/yr TREO, commissioning H1 2027 (the company’s Bokan Mountain deposit remains undeveloped); Vital Metals’ Nechalacho is not producing (PFS due February 2027); Lynas is the only commercial ex-China heavy-rare-earth separator, with yttrium now scheduled for 2028; Solvay La Rochelle begins Dy/Tb separation in September 2026. Materials Dispatch could not verify the current status of ASM’s Dubbo, Rainbow’s Phalaborwa or Lynas Seadrift via primary sources this cycle.

Ranked by strategic criticality for defense magnets — (1) scale and timing of NdPr, Sm, Dy and Tb output; (2) jurisdiction; (3) integrated magnet-grade capability — Mountain Pass plus the US magnet plants now form the first tier; Lynas/Solvay the heavy-rare-earth tier; and the mine developers a distant third. Commissioning milestones, not announcements, are the metric.

However, the critical execution point is that mining alone does not solve the defense magnet bottleneck. Solvent extraction plants, metal making, strip casting, powder preparation, and sintering lines must be commissioned, qualified, and operated at tight process windows to deliver magnets that meet aerospace and defense specifications. That sequence represents a multi‑stage industrial challenge rather than a simple question of ore grade or tonnage.

Technical Bottlenecks: From Ore to Qualified NdFeB and SmCo Magnets

The technical journey from an ore body to a magnet sitting in an F‑35 actuator includes several high‑risk steps, each with distinct constraints on energy, water, waste, and quality control. The upstream segment – mining, crushing, and beneficiation – is relatively well understood, with conventional comminution, flotation, and sometimes gravity or magnetic separation used to produce a mineral concentrate.

The midstream separation stage is more complex. Most light rare earths (La to Nd, Pr) are currently separated using large‑scale solvent extraction (SX) plants, where thousands of mixer–settler stages may be arranged in cascades to tease apart closely related elements. Constraints include:

• High capital intensity for SX infrastructure, including corrosion‑resistant materials and extensive tankage.
• Significant chemical consumption (organic solvents, acids, bases) requiring robust waste treatment and recycling systems to satisfy environmental regulations.
• Long commissioning timelines, as steady‑state operation with stable separation profiles can take extended periods to achieve.

Heavy rare earths (Dy, Tb, etc.) are even more challenging, often sourced from ion‑adsorption clays and separated in smaller but chemically intensive circuits. Newer technologies such as membrane extraction, chromatography, or modified ion exchange platforms have been proposed to reduce footprint and environmental impact, but large‑scale defense‑relevant deployments remain limited compared to classic SX.

The downstream magnet manufacturing chain then introduces another set of constraints:

• Metal making and alloying: Rare earth oxides must be reduced to metals (often via metallothermic reduction) and alloyed with iron, boron, or cobalt under inert conditions, which is energy‑intensive and sensitive to contamination.
• Strip casting and powder preparation: Producing appropriate grain structures, followed by jet milling to sub‑micron powders, demands tight process control to achieve target coercivity and remanence.
• Pressing, sintering, and heat treatment: Aligning grains in a magnetic field, sintering to near‑theoretical density, and performing grain boundary diffusion with Dy/Tb additions are all critical to high‑temperature magnet performance.
• Coatings and finishing: Magnet surfaces require coatings (e.g., nickel, epoxy) to manage corrosion, especially for NdFeB magnets exposed to humidity or coolant environments.

Defense applications then layer qualification on top of this already demanding chain. Magnets undergo thermal cycling, vibration, shock, radiation, and long‑duration aging tests. Any relocation of magnet fabrication – for instance, from an established vendor base in East Asia to a new plant in North America or Europe – triggers a thorough requalification cycle. That is why, from an execution standpoint, establishing secure magnet capacity is not only a question of building a factory; it is a question of passing through a multi‑year testing and certification regime tied to platform safety and reliability.

Policy Responses 2024–2026: DFARS Ban, DPA, Deal Team Six, CRMA, and Export Controls

Recent policy measures have begun to reshape, although not yet resolve, the supply landscape for defense‑critical rare earths. The most consequential for the F-35 is a procurement rule, not a mine: DFARS 252.225-7052 / 10 U.S.C. § 4872. Through 31 December 2026 it bars melting or production of SmCo and NdFeB magnets in China, Russia, Iran or North Korea; from 1 January 2027 the entire mine-to-magnet chain (mining, refining, separation, alloying) is covered (NDAA FY2021 §844, pushed from 2026 to 2027 by NDAA FY2024 §854). Contractors lobbied for a second delay in spring 2026; instead, Executive Order 14415 of 20 July 2026 ends routine waivers from 1 January 2027 unless a mitigation plan is accepted, mandates indentured bill-of-materials mapping to ore origin (guidance due within 180 days), and exempts Project Vault and EXIM/DFC-financed sources. Reuters reported on 27 July that US miners and processors are not ready and waivers will likely still be needed. The House-passed FY2027 NDAA (H.R. 8800, 22 July 2026, §1801) would add tiered domestic-content sourcing for magnets from 2028–2031; it is not yet law.^{EO 14415; Reuters 2026}

On the supply side, the Defense Production Act awards of 2020–2024 (Mountain Pass separation, US NdFeB plants, RapidSX demonstrations) have been dwarfed by the 2025–2026 instruments:

• The DoD–MP Materials package (July 2025): equity, a US$110/kg NdPr price floor, 100% offtake of the 10X magnet plant and a heavy-rare-earth loan.
• Office of Strategic Capital loans: US$620m to Vulcan Elements (+US$80m ReElement), US$500m to Phoenix Tailings (June 2026).
• “Deal Team Six” (May 2026): up to US$200bn of authority over three years for equity, loans and price floors in ex-China rare earths and magnets; Project Vault (February 2026): a US$12bn critical-minerals reserve, rare earths first.
• Presidential Determination 2026-19 (30 July 2026) under DPA §101, allowing restrictions on exports of recoverable critical minerals such as end-of-life magnets and swarf.

These moves are explicitly framed as industrial resilience infrastructure rather than commercial speculation: the aim is to ensure that mission‑critical platforms such as fighters, submarines, and missile defenses retain supply options even under adversarial trade conditions.

The European Union’s Critical Raw Materials Act (CRMA), adopted in 2024, sets bloc‑wide targets for domestic extraction and processing percentages by 2030, including for rare earths.^{EU CRMA} For defense, the practical near‑term effect lies less in raw tonnage and more in permitting acceleration for strategically designated projects in allied jurisdictions – for example, REE projects in Greenland or within EU borders that can be linked to aerospace and defense supply chains.

On the other side of the ledger, China’s April 2025 licensing regime on samarium, dysprosium, terbium and yttrium remains in force, its October 2025 package is suspended only until 10 November 2026, and entity-level bans now target US magnet makers directly. Chinese rare-earth exports fell 10% year-on-year in January–July 2026 (34,706 t) with July at a four-month low, and H1 exports to the US were down 49%. Uncertainty over licence conditions is no longer a perception risk but a documented flow constraint for long‑lived programs such as the F‑35, which is expected to remain in service for decades.

Operational Risk: Where Rare Earth Constraints Hit Military Capability

Translating this materials landscape into operational risk for fighter fleets and naval forces requires distinguishing between several potential failure modes.

1. Production delays for new platforms. A shortage of qualified NdFeB or SmCo magnets, or a sudden regulatory block on a key supplier, can slow final assembly even when airframes, engines, and avionics are otherwise ready. The F‑35 magnet alloy incident showed this mechanism clearly: deliveries were paused despite production capacity being available because a specialty metal sourcing rule was breached. In 2026 the mechanism is regulatory again: Lockheed Martin’s 10-K and 10-Q disclose rare-earth “supply availability concerns”, and while F-35 deliveries fell to 19 in Q2 2026 (51 in H1 versus 97 a year earlier), Lockheed attributes the dip to TR-3 backlog normalisation, not rare earths, and maintains a 156-per-year rate. GAO put the fleet’s fully-mission-capable rate at 24.6% for FY2025 (June 2026) and flagged parts and materials capacity as a risk.

2. Sustainment constraints on in‑service fleets. Spare parts and line‑replaceable units that contain rare earth magnets – from actuators to pumps and sensor gimbals – draw from the same constrained magnet supply base as new‑build aircraft. When supply is tight, tension emerges between allocating magnets to new production and sustaining existing fleets. In high‑tempo operations, sustainment magnet demand can be significant.

3. Qualification bottlenecks when switching suppliers. Even if alternative magnet capacity becomes available in a friendly jurisdiction, migrating critical components to new magnets triggers design reviews, environmental testing, and certification runs. For some systems, that process may take years, during which legacy suppliers remain essential. That dynamic slows down attempts to “onshore” or “friend‑shore” magnet supply in the short term.

4. Cross‑platform competition for scarce dopants. Heavy rare earths used for coercivity enhancement – dysprosium and terbium in particular – are shared between defense, automotive traction motors, and renewable energy applications such as direct‑drive wind turbines. When HREE supply tightens, defense platforms compete directly with electric vehicles and wind sectors for the same kilograms of Dy and Tb. In practice, that competition can manifest as higher prices, long‑term offtake contracts, or explicit prioritization policies.

These failure modes illustrate why “rare earth dependency in Western military platforms” is more than a geopolitical talking point. It is a practical engineering and logistics problem that touches platform scheduling, maintenance planning, and the design of future systems that will either entrench or ease current magnet dependencies.

Scenario Space: How Rare Earth Constraints Could Evolve

Looking out over the second half of the 2020s, several structurally plausible scenarios emerge for the rare earth–defense nexus, each defined less by headline prices and more by physical and regulatory constraints.

Constrained diversification. In this scenario, projects such as Mountain Pass, Mount Weld expansions, Nechalacho, Dubbo, and selected African and Greenland deposits reach stable production and feed a modest but meaningful share of global NdPr and Sm output into non‑Chinese magnet chains. Magnet plants in North America, Europe, and allied Asia take a larger share of defense‑grade orders, but a significant fraction of global volume remains tied to Chinese processing. Supply risk is reduced but not eliminated; rare earths remain a lever in geopolitical crises, but day‑to‑day operations are manageable.

Fragmentation and repeated shocks. Heightened geopolitical tension could lead to more restrictive export controls on both sides, with China tightening magnet and alloy exports and Western blocs imposing broader restrictions on technology or investment flows. In this environment, even small disruptions – a fire at a key separation plant, a licensing delay, a shipping blockage – could cascade into sustained magnet shortages. Defense programs would then increasingly rely on contingency measures such as accelerated stockpiling, redesigns to use lower‑Dy formulations, or tactical cannibalization of non‑priority systems.

Technological adaptation. Over a longer horizon, materials science could begin to erode rare earth intensity through new magnet chemistries, improved grain boundary diffusion, or advanced motor designs that use less NdPr per unit of torque. Soft‑magnetic alternatives or electrically excited machines may substitute for some permanent magnet applications in lower‑risk environments. However, for the harshest, highest‑reliability regimes – such as fighter engine‑adjacent actuators or certain missile guidance systems – SmCo and high‑coercivity NdFeB are likely to remain benchmarks for the foreseeable future, even in this adaptive scenario.

Across these scenarios, the persistent theme is that qualitative dependence – the absence of drop‑in substitutes for missions where failure is unacceptable – matters at least as much as quantitative consumption measured in tonnes per year. A fighter or destroyer can tolerate higher rare earth costs more easily than it can tolerate a missing magnet in a flight‑critical actuator.

Decision table: what to do now (August 2026)

Materials Dispatch Synthesis: What Really Drives Rare Earth Risk in Western Airpower

Bringing these threads together, three structural drivers stand out in the rare earth exposure of Western fighter jets and associated platforms:

• Concentration in permanent magnets, not overall materials use. The bulk of rare earth operational risk resides in NdFeB and SmCo magnets embedded in irreplaceable functions – fly‑by‑wire systems, radars, EW suites, and high‑reliability power systems – rather than in more substitutable applications.
• Midstream and downstream processing bottlenecks. Mining diversification is progressing, but separation, metal making, and magnet fabrication – particularly for high‑coercivity, high‑temperature grades – remain concentrated in a small number of jurisdictions, with China still central.
• Qualification inertia in defense supply chains. Even when alternative supply is technically available, requalifying magnets to meet aerospace and defense standards introduces multi‑year delays that lock in existing dependencies.

One concise way to capture the situation is this: for Western airpower, rare earths are not a volume problem but a critical‑function problem. A few tens of kilograms of carefully processed material per aircraft — a few hundred, on the legacy figure — determine whether multi‑tonne structures, multi‑billion‑dollar programs, and decades of doctrine remain operationally credible.

From an industrial resilience standpoint, the key variables to watch are not only new mine announcements, but the commissioning of non‑Chinese solvent extraction circuits, rare earth metal plants, and high‑specification magnet lines, along with the often quieter process of qualifying those components into F‑35, Eurofighter, Rafale, and future sixth‑generation systems.

Materials Dispatch will continue to track weak signals along this chain – from MOFCOM notices and USGS releases to OEM magnet purchase patterns and specification changes in upcoming fighter platforms – because in this domain, seemingly minor materials decisions can propagate into strategic capability constraints.

Note on Materials Dispatch methodology Materials Dispatch integrates regulatory text monitoring (including Chinese export control communiqués and EU CRMA implementation rules), technical and production data from operators (where disclosed), and analysis of end‑use specifications for platforms such as the F‑35, Eurofighter, and Rafale. This triangulation allows rare earth mining news, separation capacity shifts, and magnet technology developments to be mapped directly onto concrete defense performance and availability risks.

Sources

1. Congressional Research Service — Rare Earth Elements in National Defense (R41744) — 23 Dec 2013 — everycrsreport.com
2. Adamas Intelligence — How much rare earths does an F-35 really contain? — 22 Apr 2026 — adamasintel.com
3. US Department of Defense — DOD looks to establish ‘mine-to-magnet’ supply chain for rare earth materials — 11 Mar 2024 — war.gov
4. 48 CFR § 252.225-7052 — Restriction on the acquisition of certain magnets, tantalum, and tungsten — law.cornell.edu
5. White House — Executive Order 14415, Securing America’s Defense Supply Chains and Ensuring Domestic Acquisition of Critical Materials — 20 Jul 2026 — whitehouse.gov; Breaking Defense — The devil was in the waivers — 31 Jul 2026 — breakingdefense.com
6. Reuters — Trump may need to allow Chinese minerals as US industry struggles to meet 2027 deadline — 27 Jul 2026 — reuters.com
7. Adamas Intelligence — US defense contractors seek second DFARS delay as Pentagon’s $200B Deal Team Six mobilizes — 5 Jun 2026 — adamasintel.com
8. Reuters — US business group says some critical minerals nearly unobtainable in China — 10 Jun 2026 — reuters.com
9. AP via US News — US faces new pressure to build weapons without China’s rare earth magnets — 3 Aug 2026 — usnews.com
10. Bloomberg — China is exporting 20% fewer magnets to US despite trade truce — 20 Jul 2026 — bloomberg.com; Silverado Policy Accelerator — China’s global exports of rare earths, July 2026 update — silveradopolicy.substack.com
11. Lockheed Martin — Second quarter 2026 financial results — 23 Jul 2026 — lockheedmartin.com
12. GAO — F-35 sustainment (GAO-26-108113) — 11 Jun 2026 — gao.gov
13. CNBC — MP Materials selects Texas for rare earth magnet manufacturing site (DoD deal terms) — 26 Feb 2026 — cnbc.com
14. Vulcan Elements — Benson, North Carolina magnet facility — 9 Jun 2026 — vulcanelements.com; USA Rare Earth — Stillwater milestones — 26 Mar 2026 — usare.com
15. Forbes — US names samarium as most vulnerable critical mineral — 30 Oct 2025 — forbes.com; Fortune — America shot its arsenal empty (samarium refining ~99% China) — 30 Apr 2026 — fortune.com
16. SCIO/MOFCOM — Suspension of the October 2025 announcements until 10 November 2026 — 10 Nov 2025 — english.scio.gov.cn; Mining Weekly — China’s July rare earth exports hit a four-month low — 7 Aug 2026 — miningweekly.com

Not verifiable this cycle: the WSJ August 2025 report of a 60× samarium price spike (secondhand only); current status of ASM Dubbo, Rainbow Phalaborwa and Lynas Seadrift; any Eurofighter/Rafale tonnage; exact DLA SmCo purchase volumes; GAO’s 2026 F-35 production report (withheld as CUI).