Electrical steel (also termed silicon steel, lamination steel, or transformer steel) is a specialized iron-silicon alloy engineered to maximize magnetic efficiency while minimizing energy losses in electromagnetic devices. Constituting 90–98% iron and 1–6.5% silicon, it is the backbone of:
- Power grids (>99% transformer efficiency)
- Electric vehicles (95%+ motor efficiency)
- Renewable energy systems
At Huaxiao-Alloy, we supply precision electrical steel certified to IEC, ASTM, and OEM standards for mission-critical applications.
SECTION 1: THE SCIENCE BEHIND ELECTRICAL STEEL
Core Properties & Industry Metrics
| Property | Function | Test Standard |
|---|---|---|
| Low Core Loss (P<sub>1.5/50</sub>) | ↓ Hysteresis/eddy current losses | IEC 60404-2 (Epstein) |
| High Permeability (µ) | ↑ Magnetic flux density (B<sub>sat</sub> up to 2.0T) | ASTM A772 |
| Thickness Control | ↓ Eddy currents (0.15–0.65mm ±0.02mm) | ISO 9444 |
| Insulation Coating | Prevents inter-lamination shorts | ASTM A976 |
Material Innovation Drivers:
- Silicon (3–6.5%): ↑ Resistivity → ↓ eddy currents by 50%
- Ultra-Low Carbon (<0.003%): Prevents magnetic aging
- Laser Domain Refinement: Reduces hysteresis loss 20–30%
SECTION 2: TYPES & APPLICATIONS of ELECTRICAL STEEL
1. Non-Grain Oriented Steel (NGOES/CRNGO)
- Structure: Random crystal orientation → isotropic magnetic properties
- Applications: Rotating equipment (motors, generators)
- Huaxiao-Alloy NGOES Solutions:
- 35H300: 0.35mm | P<sub>1.5/50</sub> ≤4.0 W/kg | IEC 60404-8-4
For industrial pumps, HVAC compressors - JNEH8000: 0.30mm | P<sub>1.0/400</sub> ≤25 W/kg | JIS C 2553
EV traction motors, aerospace actuators
- 35H300: 0.35mm | P<sub>1.5/50</sub> ≤4.0 W/kg | IEC 60404-8-4
2. Grain-Oriented Steel (GOES/CRGO)
- Structure: 90% Goss texture ([110]<001> orientation) → anisotropic efficiency
- Applications: Transformer cores, high-frequency inductors
- Huaxiao-Alloy GOES Solutions:
- 27ZDKH90 (Hi-B): 0.27mm | P<sub>1.7/50</sub> ≤0.85 W/kg | IEC 60404-8-7
500MVA power transformers, offshore wind substations - 0.18mm JGHF®: P<sub>1.0/400</sub> ≤40 W/kg | ASTM A876
*800V EV fast chargers (100kHz+)
- 27ZDKH90 (Hi-B): 0.27mm | P<sub>1.7/50</sub> ≤0.85 W/kg | IEC 60404-8-7
SECTION 3: GLOBAL STANDARDS & CERTIFICATIONS
| Region | Key Standards | Huaxiao Compliance |
|---|---|---|
| International | IEC 60404 (8-4, 8-7) | Full Epstein/single sheet test reports |
| North America | ASTM A876, A677 | Certified per NEMA MW1000-C1 |
| Europe | EN 10107, DIN EN 50341 | PED/CE marked for transformers |
| Asia | JIS C 2553, GB/T 2521 | CQC China, JQA Japan approvals |
| Certified for Siemens, ABB, Hitachi Energy designs |
SECTION 4: HUAXIAO-ALLOY’S ELECTRICAL STEEL PORTFOLIO
NGOES for Rotating Machinery
| Product | Thickness | Core Loss | Coating | Applications |
|---|---|---|---|---|
| M350-50A | 0.50mm | ≤5.3 W/kg (P<sub>1.5/50</sub>) | C5 | Small motors, relays |
| 50H800 | 0.50mm | ≤4.3 W/kg | Z-coating | Industrial VFD motors |
| JNEH9000 | 0.30mm | ≤20 W/kg (P<sub>1.0/400</sub>) | ND | IPM motors (EVs/drones) |
GOES for Stationary Equipment
| Product | Thickness | Core Loss | Technology | Applications |
|---|---|---|---|---|
| 30P105 (CGO) | 0.30mm | ≤1.05 W/kg (P<sub>1.7/50</sub>) | Standard | Distribution transformers |
| 23ZDKH85 (Hi-B) | 0.23mm | ≤0.80 W/kg | Laser-scribed | Ultra-efficient grid transformers |
| 0.15mm HGO | 0.15mm | ≤35 W/kg (P<sub>1.0/400</sub>) | ZML coating | 350kW+ EV chargers |
SECTION 5: INDUSTRY-SPECIFIC SOLUTIONS
| Sector | Challenge | Huaxiao Material + ROI |
|---|---|---|
| EV Manufacturing | High-speed motor losses | JNEH8000 0.30mm: ↓ core loss 30% → extend range 5.3% |
| Renewable Energy | Corrosive offshore environments | ZAM-coated NGOES: Salt spray resistance >1,200 hrs |
| Power Grids | Tier DZ efficiency mandates | Hi-B GOES: No-load loss reduction 25% → 1,900T CO<sub>2</sub> saved/transformer |
WHY HUAXIAO-ALLOY?
- ✅ Mill-Direct Access: Partnerships with POSCO, NLMK, Baosteel
- ✅ Precision Processing: Slitting (±0.1mm), laser scribing, stress-relief annealing
- ✅ Global Logistics: FOB Shanghai / bonded EU/US stocks (Hamburg/Houston)
- ✅ Technical Support: Material selection optimization & testing validation
Case Study: 220kV transformer upgrade with 27ZDKH90 Hi-B steel ↓ no-load loss by 29%, achieving €48,000/year energy savings.
CONCLUSION: ENGINEERING TOMORROW’S ENERGY LANDSCAPE
Electrical steel remains the non-negotiable foundation of electrification – from smarter grids to zero-emission transport. Huaxiao-Alloy delivers the material science, certifications, and supply chain reliability to build it efficiently.
Power Your Innovation:
➤ Request Certified Samples (NGOES/GOES/Hi-B grades)
➤ Download Electrical Steel Selection Guide (85-page technical reference)
➤ Consult Engineers for ROI Analysis
[GET SAMPLE KIT] • [DOWNLOAD GUIDE] • [REQUEST QUOTE]
A: CRGO (Grain-Oriented) has directionally optimized efficiency for transformers. CRNGO (Non-Oriented) offers uniform properties for motors/generators.
A: Yes – electrical steel is 100% recyclable. Huaxiao offers ESG reports documenting >92% recycled content.
A: Reduces core losses 20–30% for critical grid infrastructure. ROI achieved in <3 years.
A: Yes – 0.15mm/0.18mm HGO in stock for EV charger (50–150 kHz) and aerospace applications.
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