Rare Earth Exchanges published a September 5 report on potential supply-chain pressure involving dysprosium, terbium and tellurium as electricity demand and electrification develop. For permanent-magnet buyers, the most relevant point is the role of heavy rare earths in some high-temperature magnet designs.
Dysprosium and terbium can be used in selected NdFeB magnet formulations to support performance in demanding temperature environments. They are not required for every magnet. The appropriate material choice depends on the motor, generator or actuator design, operating temperature, corrosion environment, required magnetic properties and total cost target.
That is why early collaboration between a magnet manufacturer and the component designer matters. Instead of specifying a material only by a familiar grade name, buyers can share the complete working condition: maximum operating temperature, demagnetization margin, dimensions, coating needs, annual volume and validation standard. This allows the supplier to assess whether a heavy-rare-earth-containing grade is necessary or whether another validated design can meet the application requirement.
As electrification programs scale, the strongest sourcing strategy combines technical accuracy with material awareness. Buyers should avoid both extremes: treating all NdFeB magnets as interchangeable, or assuming a heavy-rare-earth specification is required without application-level testing.
Source: Rare Earth Exchanges news listing, September 5, 2026