Precision Cold-Rolled Non-Grain Oriented Silicon Steel for Transformers & Shielding Solutions.
Non-Oriented Electrical Steel (NOES): Cost-Effective Magnetic Performance
Ideal for transformers, reactors, and electromagnetic shielding, our cold-rolled non-grain oriented silicon steel combines low hysteresis loss and isotropic magnetic properties (uniform flux density in all directions). With silicon content 2.8–3.5%, grades like 35WW230 deliver core losses as low as 2.3 W/kg @1.5T/50Hz at competitive pricing.
Key Advantages:
- Affordable Shielding: 30% cost reduction vs. grain-oriented steel
- Custom Fabrication: Sheets, laminations, and pre-cut cores (EI, UI, C-type)
- Rapid Delivery: 7–15 days for standard sizes
Technical Specifications & Magnetic Properties
Premium Grades for Diverse Applications
| Grade | Thickness | Max. Core Loss (P1.5/50) | Min. Induction (B50) | Density | Stacking Factor |
|---|---|---|---|---|---|
| 35WW230 | 0.35mm | ≤2.3 W/kg | ≥1.62T | 7.6 kg/dm³ | 95% |
| 50WW230 | 0.50mm | ≤2.3 W/kg | ≥1.62T | 7.6 kg/dm³ | 97% |
| 50WW600 | 0.50mm | ≤6.0 W/kg | ≥1.66T | 7.75 kg/dm³ | 97% |
| 50WW1300 | 0.50mm | ≤13.0 W/kg | ≥1.72T | 7.85 kg/dm³ | 97% |
Surface & Mechanical Properties:
- C4/C5 Insulation Coating: 2–4 μm thickness (surface resistance ≥15 Ω·cm²)
- Hardness (HV): 170–210
- Flatness Tolerance: ≤3mm/m per ASTM A1037
Applications by Industry
- Energy Distribution:
- Dry-Type Transformers: 35WW230 steel for ≤2.3W/kg loss in 100–2,500kVA units
- Industrial Shielding:
- MRI Room Panels: 50WW600 grade blocks 98% stray magnetic fields
- Renewable Energy:
- Solar Inverter Chokes: 0.35mm 35WW250 with 2.5W/kg loss
Manufacturing & Quality Assurance
- Hot Rolling: Slabs heated to 1,100°C and rolled to 2.5mm.
- Cold Rolling: Final gauge achieved via 85–90% reduction.
- Decarburization: Annealed at 800°C (carbon ≤0.005%).
- Testing:
- Epstein Frame: Core loss validated per IEC 60404-2
- Bend Test: ≥2 bends (35WW series) or ≥10 bends (50WW series)
Competitive Advantages
| Parameter | Our NOES | Industry Average |
|---|---|---|
| Core Loss | 2.3–13.0 W/kg | 3.0–15.0 W/kg |
| Lead Time | 7–15 days | 20–30 days |
| Width Options | 50–1,250mm (±0.2mm) | Limited to 1,000mm |
Packing And Delivery
