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Help CenterASTM A848 Grade 1 Electrical Steel Coil for Magnetic Applications
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As a specialized manufacturer based in Taiyuan, Shanxi, Shanxi Jurun Technology Co., Ltd. produces premium ASTM A848 Grade 1 electrical steel coils engineered for high-performance magnetic applications. Our coils deliver exceptional magnetic permeability with minimized energy loss, making them ideal for power transformers and industrial electrical equipment. Through precise cold rolling and annealing processes, we ensure consistent grain orientation that enhances magnetic flux density while reducing eddy current losses.
Key technical advantages include:
- Optimized silicon content (2.9-3.2%) for reduced hysteresis loss
- Controlled insulation coating thickness (C3/C5 grade)
- Customizable annealing options for specific permeability requirements
- Precision tension leveling for flatness tolerance ≤3 I-unit
| Parameter | Standard Value | Premium Grade |
|---|---|---|
| Core Loss (W/kg @ 1.5T/50Hz) | 4.2 | 3.8 |
| Permeability (@1.0T) | 1800 | 1950 |
| Coating Weight (g/m²) | 3.0±0.5 | Customizable |
Our production facility in Shanxi implements rigorous quality control at three critical stages: material inspection, intermediate dimensional verification, and final magnetic testing. This ensures:
• Batch-to-batch consistency with ≤2% property variation
• Surface quality meeting S3 classification per ASTM A976
• Edge condition suitable for high-speed slitting operations
For transformer manufacturers, our coils deliver measurable benefits:
✓ 5-7% reduction in no-load losses
✓ Increased fill factor by 1.5-2% through improved flatness
✓ Extended service life due to superior lamination insulation
Shanxi Jurun Technology maintains 12,000 metric tons of annual production capacity with 98% on-time delivery performance to global clients. Our technical team provides application-specific guidance on:
• Optimal annealing parameters for target magnetic properties
• Slitting tolerance recommendations (±0.2mm standard)
• Custom packaging solutions for export requirements
FAQ Section
Q: What distinguishes ASTM A848 from other electrical steel grades?
A: This specification focuses on controlled magnetic aging characteristics, ensuring stable performance over decades of service.
Q: Can you supply non-standard widths?
A: Our rolling mill accommodates widths from 350mm to 1300mm with special tooling available for unique requirements.
Q: How does coating affect magnetic performance?
A: Our proprietary coating technology reduces interlaminar losses by 12-15% while maintaining essential surface insulation resistance.
Q: What testing documentation accompanies shipments?
A: Each coil includes mill test reports with actual core loss, permeability, and thickness measurement data.
Q: Do you offer stress relief annealing services?
A: In-house batch annealing capabilities allow us to deliver stress-relieved coils with controlled atmosphere protection.
Q: What is your minimum order quantity?
A: Standard production runs start at 20 metric tons, with smaller quantities available from stock.
Q: How does your material perform in high-frequency applications?
A: Our optimized grain structure maintains permeability up to 400Hz with only 15% additional loss versus conventional grades.
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