Silicon steel (also known as electrical steel) is a specialized steel alloy with a silicon content of 0.5% to 5%. It is a soft magnetic material with high magnetic permeability and low core loss, making it an essential material for the electrical power industry. We supply both CRGO (Grain Oriented) and CRNGO (Non-Oriented) silicon steel in various grades to meet your transformer and motor manufacturing needs.
Silicon Steel Product Overview
| Product Type | GB/T Designation | Equivalent / Standard | Thickness | Key Property |
|---|---|---|---|---|
| CRGO — Grain Oriented | B27/B30 series (e.g. B30P130) | M2–M4 · JIS C series | 0.23–0.30 mm | Core loss P1.7/50 ≤1.30 W/kg |
| CRNGO — Non-Oriented | 50W470 / 50W800 | M15–M47 equivalents | 0.35–0.65 mm | Core loss P1.5/50 2.0–4.7 W/kg |
CRGO — Cold Rolled Grain Oriented
Typical magnetic properties for CRGO grades per GB/T 2521.
| Grade | Thickness (mm) | Density (kg/dm³) | Core Loss P1.7/50 (W/kg) | Magnetic Induction B800 (T) |
|---|---|---|---|---|
| B23P090 | 0.23 | 7.65 | 0.90 | ≥1.80 |
| B27P095 | 0.27 | 7.65 | 0.95 | ≥1.80 |
| B30P120 | 0.30 | 7.65 | 1.20 | ≥1.80 |
CRNGO — Cold Rolled Non-Oriented
Typical magnetic properties for CRNGO grades per GB/T 2521.
| Grade | Thickness (mm) | Density (kg/dm³) | Core Loss P1.5/50 (W/kg) | Magnetic Induction B5000 (T) |
|---|---|---|---|---|
| 50W470 | 0.50 | 7.70 | 4.70 | ≥1.65 |
| 50W600 | 0.50 | 7.75 | 6.00 | ≥1.65 |
| 50W800 | 0.50 | 7.80 | 8.00 | ≥1.65 |
Why Order from Zhongtang Steel?
- Full Range — CRGO and CRNGO materials in stock
- Guaranteed Core Loss — Strict quality control on magnetic properties
- Custom Slitting — We can cut to your required widths
- EN 10204 3.1 MTC supplied with every shipment
- Mill-direct pricing — no trading company markup
Applications
- CRGO: Power transformers (distribution and power transformers)
- CRNGO: Electric motors, generators, household appliances (fans, compressors)
- EV (Electric Vehicle) drive motors
- Wind turbine generators and solar inverters
Values are typical reference ranges per GB/T 2521 and ASTM A876. Actual properties may vary by mill and production route. Mill test certificates (EN 10204 3.1) are supplied with every shipment — contact us for exact data sheets.
