1J79 Permalloy Wire Ni79Mo4 Soft Magnetic Nickel Iron Alloy Wire High Permeability Precision Magnetic Wire for Magnetic Shielding & Transformer Applications
1J79 Permalloy Wire is a high-permeability soft magnetic nickel-iron alloy wire containing approximately 79% nickel and a small amount of molybdenum. It offers excellent magnetic permeability, low coercive force, low core loss, and outstanding magnetic shielding performance. After proper vacuum or hydrogen annealing, the alloy achieves superior soft magnetic properties, making it ideal for precision electromagnetic and electronic applications.
Our 1J79 wire is manufactured using advanced melting and precision drawing processes to ensure consistent chemical composition, excellent dimensional accuracy, and reliable mechanical properties. It is available in various diameters and can be customized to meet specific customer requirements. The wire features a smooth surface finish, excellent ductility, and good workability for winding, forming, and precision machining.
1. Chemical Composition:
|
Ni |
78.5-80.0 |
|
Mo |
3.8-4.1 |
|
Fe |
Bal |
|
Mn |
≤0.5 |
|
Si |
≤0.3 |
|
C |
≤0.03 |
2. Technical Specifications:
|
Parameter |
Specification |
|
Max continuous Operating Temperature(℃) |
≤450 |
|
Resisivity(μΩ/cmf,20℃) |
60 |
|
Density(g/m³) |
8.6-8.7 |
|
Thermal Conductivity(W/m·K, 20°C) |
13.4 |
|
Tensile strength(N/m㎡) |
520-690mpa |
|
Melting point(℃) |
1400-1435℃ |
|
Hardness(Hv) |
150-220Hv |
|
Elongation(%) |
≥30% |
3. Production Attributes
|
Product Form |
1J79 wire |
|
Diameter |
customization |
|
Surface Finish |
Bright, Polished |
|
Packaging Type |
Coil, Bundle, Straight Rods |
|
Certification |
ISO9001, SGS, and so on |
|
Application Environment |
Chemical, Industrial,Home |
4.Applications
- Magnetic shielding components and enclosures
- Precision electromagnetic coils
- Current transformers (CT) and transformer windings
- Relays and electromagnetic switches
- Inductors and choke coils
- Magnetic sensors and measuring instruments
- Electronic and communication equipment
- Aerospace and aviation electronic systems
- Medical devices and diagnostic equipment
- Precision instruments and laboratory equipment
- Electromagnetic actuators
- High-performance electronic components
5.Key features
- High initial and maximum magnetic permeability
- Low coercive force for excellent soft magnetic performance
- Very low core loss and hysteresis loss
- Excellent magnetic shielding capability
- High magnetic sensitivity and stable magnetic properties
- Good ductility and excellent winding performance
- Smooth surface finish with high dimensional accuracy
- Stable chemical composition and reliable performance
- Excellent heat treatment response (vacuum or hydrogen annealing)
- Suitable for precision coil winding applications
- Good corrosion resistance under normal environments
- Available in multiple wire diameters with custom sizes
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