NF46 PTC Ni-Fe Alloy Wire for Inductors and Current Sensors

Product Specification

NF46 PTC Ni-Fe Alloy Wire Low Curie Point and Medium Saturation Polarization for Inductors and Current Sensors, Resistance0.46

Some Key Features of NF46 Include:

1. Low Coercive Field:

This alloy can exhibit a very low coercive field, which is beneficial for applications requiring high magnetic sensitivity.

2. Magnetic Properties Tunability:

The magnetic properties of NF46 can be adjusted by adding elements like copper, chromium, or titanium, effectively reducing the remanence and the coercive field.

3. Tuned Curie Point and Hopkinson Peak:

These features are advantageous for new non-contact temperature sensing technology, making the alloy suitable for precise temperature control applications.

4. Great Plasticity and Soft Magnetic Behavior:

When austenitic, these face-centered cubic (fcc) Fe-Ni materials exhibit great plasticity and very soft magnetic material (SMM) behavior with respect to magnetic anisotropy energies.

5. Low Curie Point:

Industrial austenitic FeNi(Cr,Mo,etc) alloys, similar to Ni45-50, are characterized by a low Curie point (20 < Tc < 450 °C), which is useful in various temperature-sensitive applications.

6. Saturation Polarization:

NF46 has a saturation polarization of medium amplitude at room temperature, which is a significant property for magnetic applications.

7. Corrosion Resistance:

Ni-Fe alloys typically offer good corrosion resistance, making them suitable for use in harsh environments.

8. High Workability:

These alloys are often easy to work with, allowing for the creation of complex shapes and structures through processes like high energy ball milling.

9. Potential for Technological Applications:

Ongoing research and development in the field of Fe-Ni alloys, including NF46, are focused on improving their magnetic properties and expanding their applications in various technological fields.

These features make NF46 alloys suitable for a range of applications, from aerospace and medical to automotive and energy sectors, due to its hardness, corrosion resistance, and thermal stability.

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Applications:

• Transformer Components: NF46 alloys are traditionally used in the manufacturing of cut-out parts for transformers due to their magnetic properties .
• Synchro-Resolvers: These alloys are utilized in synchro-resolvers, which are precision devices used for measuring angular position in various control systems.
• Miniaturized Motors: The magnetic characteristics of NF46 make it suitable for use in the construction of miniaturized motors.
• High-Sensitivity Relays: Stamped parts for high-sensitivity relays are made from Ni45-50 alloys, benefiting from the material's magnetic properties .
• Low-Frequency Inductors: NF46 alloys are used in low-frequency inductors, where their magnetic properties contribute to the efficiency of these components.
• Open-Loop Current Sensors: The cores for open-loop current sensors are often made from NF46 alloys, leveraging their magnetic properties for accurate current sensing .
• Temperature-Controlled Induction Heating: The alloy's properties make it suitable for use in temperature-controlled induction heating applications, where precise temperature regulation is required.
• Additive Manufacturing: NF46 alloys are also used in additive manufacturing to create actuator parts, taking advantage of the material's ability to be processed into complex shapes .
• Torque Sensors: The development of high precision torque sensors benefits from the very low coercive field possible with NF46 alloys .
• Gas Safety Actuators: NF46 alloys are used in gas safety actuators, where their magnetic properties contribute to the reliability and safety of the devices.

Resistance Values and Naming Conventions for PTC Ni-Fe Alloy Wires

Chemical Composition of Different Models of PTC Ni-Fe Alloy Wire

Temperature Coefficients of Different Models of PTC Ni-Fe Alloy Wire

Mechanical properties (tensile strength)

Size (diameter)