CRNGO (Non-Oriented) Electrical Steel Coils & Strips
High-Performance Cold Rolled Non-Grain Oriented Silicon Steel for Motors, Generators & Appliances
Request Custom QuoteKey Benefits of Our CRNGO Steel
Energy Saving
Optimized magnetic domain structure reduces eddy current loss and improves motor efficiency by up to 15%
High Saturation
B50 value above 1.7T ensures high power density design for compact motor applications
Easy Processing
Surface insulation coating withstands 850°C, punching burr ≤0.03mm, reducing tool wear
Quality Consistency
ISO 9001 certified production with ≤0.5% thickness tolerance across full coil length
Cost Efficiency
Reduced core loss saves 5-8% operational costs over motor lifespan (tested per IEC 60404)
Eco-Friendly
ROHS compliant C6 coating, recyclable material supporting sustainable manufacturing
Technical Specifications
Comprehensive parameters according to IEC/GB/ASTM standards
Chemical Composition
| Element | Content Range (%) |
|---|---|
| Silicon (Si) | 2.0-3.5 |
| Aluminum (Al) | ≤0.5 |
| Manganese (Mn) | ≤0.3 |
| Carbon (C) | ≤0.005 |
| Sulfur (S) | ≤0.003 |
| Iron (Fe) | Balance |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.65 g/cm³ |
| Electrical Resistivity | 0.40-0.60 μΩ·m |
| Curie Temperature | 740-770°C |
| Thermal Conductivity | 18-25 W/(m·K) |
Magnetic Properties
| Grade | Core Loss W15/50 (W/kg) | Core Loss W10/400 (W/kg) | Magnetic Induction B50 (T) |
|---|---|---|---|
| 35WW230 | ≤2.30 | ≤12.0 | ≥1.70 |
| 35WW250 | ≤2.50 | ≤13.0 | ≥1.70 |
| 35WW270 | ≤2.70 | ≤14.0 | ≥1.70 |
| 35WW300 | ≤3.00 | ≤15.0 | ≥1.70 |
| Grade | Core Loss W15/50 (W/kg) | Core Loss W10/400 (W/kg) | Magnetic Induction B50 (T) |
|---|---|---|---|
| 50WW290 | ≤2.90 | ≤14.0 | ≥1.70 |
| 50WW310 | ≤3.10 | ≤15.0 | ≥1.70 |
| 50WW330 | ≤3.30 | ≤16.0 | ≥1.70 |
| 50WW350 | ≤3.50 | ≤17.0 | ≥1.70 |
| Grade | Core Loss W15/50 (W/kg) | Core Loss W10/400 (W/kg) | Magnetic Induction B50 (T) |
|---|---|---|---|
| 65WW370 | ≤3.70 | ≤18.0 | ≥1.70 |
| 65WW400 | ≤4.00 | ≤19.0 | ≥1.70 |
| 65WW440 | ≤4.40 | ≤20.0 | ≥1.70 |
| 65WW470 | ≤4.70 | ≤21.0 | ≥1.70 |
Dimensions & Tolerances
| Parameter | Specification Range | Tolerance |
|---|---|---|
| Thickness | 0.10mm - 0.65mm | ±0.005mm |
| Width | 20mm - 1500mm | ±0.1mm |
| Inner Diameter | 508mm (Standard) | +5/-0mm |
| Outer Diameter | Customized | As per requirement |
| Coil Weight | 3-10 tons (Standard) | ±2% |
Surface Coating Options
Application Scenarios
New Energy Vehicle Motors
High-speed motor core material meeting ISO 19453 heat resistance requirements
Industrial Efficient Motors
Core material for IE3/IE4 efficiency class motors
Home Appliance Motors
Low noise solution for air conditioner compressors and refrigerator motors
Generator Rotors
High saturation magnetic induction increases power density
Small Distribution Transformers
Ideal core material for low-voltage distribution systems with isotropic magnetic properties
Reactors & Inductors
Essential for harmonic suppression, power compensation, and circuit filtering applications
Why Choose Metalink?
Vertical Integration Capability
Own slitting units (width tolerance ±0.1mm) + vacuum annealing furnaces (H₂/N₂ protection)
Global Delivery Network
Spot goods in Wuxi bonded warehouse + 30 days delivery to Far East ports
Technical Support
Free magnetic characteristic curves (B-H, P-B curves)
Certification Assurance
SGS ROHS certification + material report with each shipment
Value-Added Processing Services
From Raw Material to Finished Components - Complete In-House Capabilities
Coil to Strip Processing
Precision slitting of CRNGO coils into custom-width strips
- Width tolerance: ±0.05mm
- Max coil width: 1500mm
- Burr-free edge finishing
- Surface oiling/coating options
Stator & Rotor Manufacturing
Complete motor core component production from strip material
- High-speed progressive stamping
- Precision stacking & welding
- Annealing & stress relief
- Varnishing & impregnation
Transformer Core Manufacturing
Complete transformer core assembly services
- Step-lap & miter cutting
- Automatic core stacking
- Banding & clamping
- Vacuum pressure impregnation
Integrated Production Flow
Raw Material
CRNGO Coils
Processing
Slitting & Cutting
Stamping
Lamination Production
Assembly
Core Stacking
Finishing
Coating & Testing
Frequently Asked Questions
CRNGO has isotropic magnetic properties and is suitable for rotating electrical machines; CRGO has high permeability along the rolling direction and is designed for transformers.
We can provide semi-processed material for customers to anneal after stamping to optimize performance.
20 tons for standard grades, sample coils (500kg) can be provided quickly.
Ready to Optimize Your Motor Production?
Contact us today for a customized solution