In today’s electrification era, high-speed motors are the backbone of advanced applications—from electric vehicles (EVs) and drones to robotics and industrial automation. At the core of these motors lies a critical material: silicon steel.
Selecting the right grade of silicon steel directly impacts the motor’s efficiency, thermal stability, weight, and power density. In this article, we’ll explore how engineers and sourcing managers can choose the optimal silicon steel for high-speed motors, and how reliable suppliers like Jiaxiao MTC can help meet performance and supply chain requirements.
? What Is Silicon Steel?
Silicon steel, also known as electrical steel or lamination steel, is a soft magnetic alloy made primarily from iron and silicon. It is engineered to deliver low core loss, high permeability, et excellent magnetic efficiency, which are crucial for motors that operate at high rotational speeds and switching frequencies.
There are two major types:
- Grain-Oriented Electrical Steel (GOES): Best suited for transformers.
- Non-Oriented Electrical Steel (NOES): Ideal for rotating equipment like high-speed motors and EV drives.
⚙️ Key Selection Criteria for High-Speed Motor Silicon Steel
When selecting silicon steel for high-speed applications (10,000+ RPM), consider the following factors:
1. Low Core Loss at High Frequency
Core loss increases dramatically at high operating frequencies. Look for silicon steel grades with low hysteresis and eddy current loss in the 400Hz–1,000Hz range.
✅ Recommended: Grades like 20XW1300 or 20XWH1200
2. Ultra-Thin Gauge for Reduced Eddy Currents
Thinner laminations minimize eddy currents, making the steel more efficient. High-speed motors benefit from ultra-thin materials (0.08mm–0.15mm) to maintain performance while reducing heat generation.
✅ Jiaxiao MTC offers 0.08mm, 0.1mm, and 0.15mm gauges in mass production
3. Excellent Magnetic Saturation
To ensure the motor delivers high torque in compact designs, the silicon steel should have a high magnetic flux density. This allows motors to run faster without saturation losses.
4. High Mechanical Strength
High-speed rotors experience extreme centrifugal forces. The silicon steel should possess good tensile strength et low anisotropy, ensuring mechanical durability and dimensional stability.
5. Consistent Quality and Tight Tolerances
Silicon steel must be cold-rolled and annealed to precise standards. Tolerances in thickness and flatness affect lamination stacking and ultimately motor efficiency.
? Recommended Grades for High-Speed Motor Applications
| Grade | Thickness | Frequency Range | Application |
|---|---|---|---|
| 20XWH1200 | 0.15 mm | 400–800 Hz | EV motors, aerospace |
| 20XW1300 | 0.10 mm | 500–1,000 Hz | High-speed motors, robotics |
| 15XW1150 | 0.08 mm | 600–1,200 Hz | Ultra-high-speed drives |
? These advanced materials are supplied by Jiaxiao MTC, a global provider of cold-rolled, heat-treated non-oriented electrical steel for high-tech motor manufacturers.
? Partnering with a Trusted Supplier: Jiaxiao MTC
As a professional global supplier of high-performance silicon steel, Jiaxiao MTC specializes in:
- Ultra-thin cold-rolled NOES (from 0.08mm)
- High-grade electrical steel for EVs, drones, and smart equipment
- International logistics support and custom packaging
- Batch-ready solutions for consistent sourcing
Jiaxiao MTC collaborates closely with electric motor manufacturers worldwide to ensure stable supply, strict quality control, and expert material consultation.
? Explore Our Silicon Steel Products »
? Future-Proofing High-Speed Motor Design
Using the right silicon steel not only improves motor performance but also enhances energy efficiency, thermal management, and sustainability. With growing global demands for lightweight, high-efficiency electrification, advanced electrical steel is no longer optional—it’s essential.
Whether you’re developing next-gen EVs, high-speed compressors, or industrial automation systems, choosing the right silicon steel is your first step toward market leadership.
? Conclusion
Silicon steel selection defines the performance ceiling of high-speed electric motors. By focusing on low loss, thin gauge, and high mechanical strength, engineers can build faster, lighter, and more reliable machines.
Looking for expert guidance and premium materials?
? Contact Jiaxiao MTC to find the perfect silicon steel solution for your high-speed motor project.
