High yield strength with low core-loss for reliable and efficient power-dense motors
Why High-Speed Rotors Demand More Than Magnetic Performance
As motors push beyond 20,000 RPM—and in some cases exceed 100,000 RPM—centrifugal forces place extreme mechanical stress on rotor materials. Traditional iron cobalt alloys such as Hiperco significantly outperform silicon steels in core loss but were limited in yield strength.
For advanced rotor designs, yield strength above 400 MPa is the critical threshold—unlocking higher speeds without sacrificing structural integrity.
Hiperco® Prime: Strength Meets Magnetic Excellence
Hiperco® Prime is a specialized iron-cobalt alloy engineered specifically for high-speed rotor applications where mechanical integrity is non-negotiable.
Developed using Carpenter’s proprietary production techniques, Hiperco® Prime achieves exceptional strength through optimized processing—delivering >400 MPa and up to 550 MPa yield strength while preserving the magnetic properties essential for motor performance.
Performance Benefits
Enables 2–5% higher continuous power output and ~25% more torque density from the same form factor
Maintains high magnetic induction at elevated stress levels
Increases power density by allowing higher operating RPM
READY TO GET STARTED?
Submit a Hiperco® Prime request to engage Carpenter Electrification’s alloy team. Our staff will review your needs and follow up to discuss scope, feasibility, and next steps as soon as possible.