Precision Resistance Material Solution
Description
Engineered for electronic component manufacturing, our Pure Iron Coil for Resistor Material offers multiple purity grades from 99.9% to 99.99%. Precision cold-rolled with thickness options (0.1-2.0mm) and customizable widths (10-500mm), it delivers optimal performance for resistors, sensors, and electromagnetic assemblies. Choose from 8 specialized alloy formulations (with trace Si/Al optimization) and request custom slitting services. Featuring ultra-low coercivity and high permeability, our ISO 9001-certified coils meet stringent standards for industrial equipment, automotive electronics, and new energy
Key Technical Specifications
✅ Purity Grades: 99.9% (C < 0.02%), 99.95% (C < 0.015%), 99.99% (C < 0.008%)
✅ Dimensions:
Thickness: 0.1mm, 0.2mm, 0.5mm, 1.0mm, 2.0mm
Width: 10-500mm (custom slit with ±0.05mm tolerance)
✅ Magnetic Properties:
Permeability: ≥5,000 H/m (1kHz)
Coercivity: ≤80 A/m
✅ Certifications: ISO 9001, RoHS, REACH
Composition Table (Exclusive Formula)
| Element | Purity 99.9% | Purity 99.95% | Purity 99.99% |
|---|---|---|---|
| Fe | ≥99.90% | ≥99.95% | ≥99.99% |
| C | ≤0.02% | ≤0.015% | ≤0.008% |
| Si | 0.3-0.8%* | 0.2-0.6%* | 0.1-0.4%* |
| Al | 0.1-0.5%* | 0.1-0.4%* | ≤0.3%* |
| Others | ≤0.05% | ≤0.03% | ≤0.01% |
| *Adjustable per application requirements |
Why Choose Beilun Metals?
Custom Alloy Design
Tailor Si/Al ratios to optimize resistivity (50-150 μΩ·cm) and thermal stability.
Zero Defect Guarantee
Laser-etched batch tracking + 100% eddy current testing for surface flaws.
Fast Global Logistics
15-day lead time for standard sizes; MOQ 500kg.
Applications
Automotive: EV battery current sensors, ignition coils
Industrial: Power grid relays, motor shunt resistors
Renewables: Solar inverter magnetic cores
Quality Assurance Process
Raw Material Sourcing: High-grade iron ore (SGS-tested)
Production: Vacuum induction melting → Cold rolling → Annealing
Testing:
Chemical: Optical emission spectroscopy (OES)
Magnetic: BH curve analysis via Permeagraph
FAQ
Q: Do you provide prototypes for R&D?
A: Yes! Request free sample strips (100mm x 200mm).
Q: Can I get anti-rust coated coils?**
A: Optional phosphating or organic coating available.
Q: What's the resistivity tolerance?
A: ±3% standard; ±1% achievable with custom annealing.
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