Advanced Soft Magnetic Alloys to Power the EV Revolution

The success of the electric vehicle depends on two factors: range and performance. Carpenter Technology provides the advanced soft magnetic alloys and stack production capabilities required to build smaller, lighter, and more efficient traction motors. Our materials allow engineers to increase torque density and reduce core losses, directly extending battery life and driving consumer preference.

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30% INCREASE IN TORQUE DENSITY

Enabled by high-saturation soft magnetic alloys.

EXTENDED DRIVING RANGE

Lower AC core losses for maximum battery efficiency.

END-TO-END MOTOR SOLUTIONS

From proprietary alloy melt to precision-bonded lamination stacks.

ENGINEERING THE HEART OF THE ELECTRIC POWERTRAIN

In the race to electrification, standard electrical steels are no longer enough. To differentiate in a crowded market, EV manufacturers must maximize the efficiency of the traction motor. Carpenter Technology’s Hiperco® family of alloys offers the highest magnetic saturation available, allowing for motor designs that are significantly more power-dense. By partnering with us, you aren't just buying metal; you are accessing 135+ years of metallurgical expertise to solve the heat and efficiency challenges of next-gen E-mobility.
EXTEND BATTERY RANGE

High-efficiency alloys that reduce energy waste through heat, allowing every kilowatt-hour of battery life to go further.

MAXIMIZE MOTOR PERFORMANCE

High-induction materials that enable higher torque at lower speeds, improving vehicle acceleration and towing capacity.

ENABLE LIGHTWEIGHTING

Superior magnetic properties allow for smaller motor footprints, reducing overall vehicle weight and increasing design flexibility.

OPTIMIZE THERMAL MANAGEMENT

Alloys with low coercive force that generate less internal heat, simplifying the cooling requirements of the electric powertrain.

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High Magnetic Saturation (2.4 Tesla)

The highest induction in the industry, allowing for smaller, more torque-dense electric motors.

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Ultra-Thin Lamination Capability

Precision-rolled strip down to 0.05 mm to minimize eddy current losses at high frequencies.

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Tailored Mechanical Strength

Alloys optimized to withstand the high centrifugal stresses of high-RPM rotors.

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Advanced Bonding & Coating

roprietary insulation and bonding techniques that maximize stack integrity and electromagnetic performance.

EV Electrification Excellence: An Inside Look

We provide the "Magic in the Machine"—the materials that transform electricity into motion with minimal loss.

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APPLICATION SPOTLIGHT

Key Electric Vehicle Applications

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Traction Motors

The traction motor is the most critical component of the EV powertrain. Our Hiperco® alloys allow for higher flux density, enabling motors that are lighter and more efficient than those using conventional silicon steel.

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On-Board Chargers & Power Electronics

Fast charging requires efficient power conversion. Our soft magnetic powders and alloys reduce losses in inductors and transformers, speeding up charge times and reducing heat.

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C. E-Axle & Transmission Components

The integration of the motor, electronics, and transmission requires high-strength materials that don't compromise on weight.

FREQUENTLY ASKED QUESTIONS: EV MATERIALS

How do Carpenter Technology alloys increase EV range?

Range is lost when electrical energy is converted into waste heat. Our soft magnetic alloys, like Hiperco®, have much lower "core losses" than standard steel, meaning more battery energy is used for motion and less is lost as heat.

What is the benefit of Hiperco® 50 over standard Silicon Steel?

Hiperco® 50 has a much higher magnetic saturation (approx. 2.4T vs 1.6T for Si-Fe). This allows a motor to produce significantly more torque from the same size, or the same torque from a much smaller and lighter motor.

Can you provide finished lamination stacks or just raw material?

We provide both. Through our advanced electrification centers, we can provide precision-stamped, bonded, and qualified lamination stacks, reducing your manufacturing complexity and risk.

Why is high-RPM rotor strength important for EVs?

Modern EV motors spin at very high speeds to maximize power. The centrifugal force can deform the rotor. Our "HS" (High Strength) alloys are engineered to handle these mechanical loads without losing their magnetic efficiency.

Accelerate Your EV Development

Partner with our electrification experts to design a powertrain that delivers more range, more power, and more reliability.