Stator Laminations
Cobalt Iron Stator Laminations
Ultra-thin, high-saturation magnetic solutions for high power-density electric machines.
Maximum Torque, Minimum Size.
Precision engineering starts at the core. The stator is the heart of the motor - but the material is its pulse. Selecting high-grade Cobalt-Iron laminations is what separates standard performance from critical reliability in the world's most demanding electric machines.
~2.4 Tesla: The Highest Magnetic Saturation
Cobalt-Iron (CoFe) laminations are ultra-thin, high-performance magnetic steel sheets, precision stamped and stacked to form stator cores. By enabling higher magnetic flux density than any other soft magnetic material, CoFe allows engineers to design motors that are smaller, lighter, and more powerful than Silicon Steel or Nickel Alloy alternatives. This is the material of choice when power density is non-negotiable. PML supplies laminations produced by Hiperco 50, Vacoflux 50, AFK50, Vacodur 49, CoFe 49, CoFe 27.
Technical Specifications
Property | Value |
Thickness | 0.127 mm – 0.35 mm |
Saturation Flux Density | ~2.35 – 2.45 T |
Common Alloys | Hiperco 50, Vacoflux 50, AFK50, Vacodur 49, CoFe 49, CoFe 27 |
Coercivity | ~80 – 160 A/m |
Insulation Coating | Inorganic or organic per application |
The PML Manufacturing Flow
1
Requirement Analysis
Specs, drawings, and application understanding review.
2
Process & Tooling
Precision die design for thin laminations (0.127–0.35 mm).
3
Stamping & Forming
High-precision, high-volume production of laminations.
4
Heat Treatment
ASM 2750E compliant stress relief and optimization.
5
Magnetic Testing
BH loop, coercivity, and in-house magnetic characterization.
6
Traceability & QA
Full traceability from raw material mill to finished goods.
Where Cobalt Alloy Performs
1
Aerospace & Defense
Actuators, starter-generators, and flight control motors where weight and power density are primary constraints.
2
Medical Devices
Surgical robotics and implantable motor systems where miniaturization is non-negotiable.
3
Industrial Automation
High-speed servo motors and precision drives demanding maximum torque in constrained form factors.
4
Emerging Mobility
Electric aviation, eVTOL, and next-generation EV drivetrains where every gram and watt is engineered.
Comparing CoFe against Silicon Steel or Nickel Alloy for your application?
Our engineers will help you model the performance, weight, and cost trade-offs before you commit to a design.
Request a Quote
Pioneering cutting-edge technology to develop reliable, high-performance magnetic components and engineering solutions.
