Soft Magnetic Alloy 1J79 Permalloy Sheet 0.1-10mm Thickness for Transformer Cores and Electromagnetic Components
Soft Magnetic Alloy 1J79 (Permalloy) is a high-performance nickel-iron alloy specifically engineered for transformer cores and electromagnetic applications requiring exceptional magnetic properties.
| Parameter | Value |
|---|---|
| Grade | 1J79 Strip |
| Thickness | 0.1-10mm |
| Width | 20-500mm |
| Coil Weight | 2-50 kg |
| Condition | Soft or Hard |
| Element | 1J79 |
|---|---|
| C | ≤0.03 |
| Si | 0.3-0.5 |
| Mn | 0.6-1.1 |
| P | ≤0.02 |
| S | ≤0.02 |
| Ni | 78.5-80 |
| Mo | 3.8-4.1 |
| Fe | Balance |
- Density: 8.6 g/cm³
- Curie Point: 450°C
- Electrical Resistivity: 55 μΩ·cm (20°C)
- Thermal Conductivity: 13.4 W/m·°C
- Initial Permeability (μ0): ≥40 mH/m
- Maximum Permeability (μm): ≥310 mH/m
- Coercivity (Hc): ≤2.0 A/m
- Saturation Magnetic Induction (Bs): 0.73 T
1J79 alloy delivers superior magnetic performance with saturation magnetic induction Bs≥0.75T, Curie point of 450°C, and resistivity of 0.55 μΩ·m. The material features small magnetostrictive coefficient, easy permeability, fast demagnetization, low coercive force, and minimal eddy current losses, making it suitable for medium to high frequency applications across the entire frequency spectrum.
Strip, sheet, bar, wire, and foil configurations available to meet specific application requirements.
- Switching power transformers
- Precision transformers
- Leakage switch transformers
- Magnetic shielding components
- Yoke assemblies
- Weak magnetic field high-sensitivity transformers
- Zero-sequence power transformers
- Low-power magnetic amplifiers
- High frequency power applications
- Pulse transformers and relays
- Electromagnetic clutches and choke cores
- Automotive sensors
We provide precise temperature control during heat treatment processes to achieve specific permeability requirements tailored to customer applications.
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