Specifications
Brand Name :
Senphus
Model Number :
NF46
Certification :
SGS, ISO9001
Place of Origin :
Jiangsu, China
MOQ :
5 kg
Price :
TBD
Payment Terms :
T/T, D/P
Supply Ability :
30 Tons Per Day
Delivery Time :
3 days
Packaging Details :
Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.
Product name :
PTC Ni-Fe Alloy Wire NF46
Material :
Ni, Fe
Application :
Chemical Composition
Diameter :
0.05 mm-30 mm
Description

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

NF46 PTC Ni-Fe Alloy (Ni 45%-50%, Resistance: 0.46 Ω·mm²/m) is a nickel-iron alloy designed for applications requiring stable resistive, magnetic, and thermal properties. Its Positive Temperature Coefficient (PTC) behavior ensures that resistivity increases with temperature, making it ideal for temperature regulation, overcurrent protection, and self-regulating heating systems.

The alloy features moderate electrical resistivity (0.46 Ω·mm²/m), high magnetic permeability, and low coercivity, making it efficient in soft magnetic applications such as transformers, inductors, and magnetic shielding. It offers thermal stability across wide temperature ranges and good corrosion resistance, ensuring long-term durability even in demanding environments.

NF46 is mechanically versatile, with excellent ductility and machinability, allowing for easy fabrication into wires, strips, and other forms. It is widely used in industrial heating systems, temperature-sensitive devices, magnetic components, and overcurrent protection systems.

With its balanced nickel content, thermal reliability, and PTC behavior, NF46 provides dependable performance for industrial, automotive, and electronic applications that require precision, stability, and durability.

Main Chemical Composition Wt.% NF46 PTC Ni-Fe Alloy % Ni Fe
Min 45
Max 50 Bal.

Some Key Features of NF46 Include:

  1. Positive Temperature Coefficient (PTC):

    • Resistivity increases with rising temperature, making it ideal for temperature sensing, overcurrent protection, and self-regulating heating applications.
  2. Moderate Electrical Resistivity:

    • A resistivity value of 0.46 Ω·mm²/m ensures efficient performance in resistive applications while minimizing energy losses.
  3. Magnetic Properties:

    • High magnetic permeability and low coercivity make it suitable for soft magnetic applications such as transformers, inductors, and magnetic shielding.
  4. Thermal Stability:

    • Offers consistent electrical and magnetic performance across a broad temperature range, ensuring reliability in demanding environments.
  5. Corrosion Resistance:

    • The nickel content provides resistance to oxidation and corrosion, ensuring long-term durability, even in harsh or humid conditions.
  6. Mechanical Versatility:

    • Excellent ductility and machinability allow for easy processing into wires, strips, and other forms, facilitating use in various applications.
  7. Wide Application Range:

    • Suitable for industrial heating systems, temperature-sensitive devices, magnetic components, and circuit protection systems.
  8. Balanced Nickel Content (45%-50%):

    • Provides an optimal balance between magnetic efficiency and resistive properties, ensuring versatility across different industries.
  9. Durable and Reliable:

    • Combines thermal stability, corrosion resistance, and magnetic efficiency for dependable performance in critical applications.

NF46’s combination of PTC behavior, precise resistivity, and thermal reliability makes it an excellent choice for diverse industrial, automotive, and electronic applications.

Applications:

  • Temperature Sensing and Regulation:

    • Used in thermistors and temperature-sensitive resistors for precise monitoring and control in industrial and consumer applications.
  • Overcurrent Protection:

    • Serves as a current limiter, increasing resistance at higher temperatures to protect sensitive electronic circuits from overcurrent damage.
  • Self-Regulating Heating Elements:

    • Ideal for industrial and domestic heating systems where precise, energy-efficient temperature control is required.
  • Magnetic Components:

    • Utilized in transformers, inductors, and chokes due to its high magnetic permeability and low coercivity, ensuring efficient energy transfer.
  • Magnetic Shielding:

    • Provides protection against magnetic interference in sensitive devices, including communication systems, medical equipment, and precision instruments.
  • Industrial Heating Systems:

    • Used in resistive heating components for applications such as heat exchangers, furnaces, and process equipment.
  • Automotive Electronics:

    • Found in sensors, resistors, and protection systems within automotive circuits to ensure reliable performance under varying thermal conditions.
  • Consumer Electronics:

    • Employed in circuit protection and heating components for household appliances, ensuring safety and durability.
  • Renewable Energy Systems:

    • Used in inverters, converters, and other power electronics to provide thermal and magnetic stability in renewable energy applications.
  • Aerospace and Defense:

    • Suitable for high-performance systems requiring thermal reliability, magnetic efficiency, and durability under extreme operating conditions.
  • Precision Instrumentation:

    • Applied in sensing and control devices requiring stable resistive and magnetic properties across a wide temperature range.

NF46’s balanced resistivity, thermal stability, and magnetic efficiency make it a versatile alloy for applications in industrial, automotive, and electronic fields.

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

Alloy brand 20℃ Resistivity The tolerance range
NF13 0.13 ±0.02
NF15 0.15 ±0.02
NF20 0.20 ±0.02
NF23 0.23 ±0.02
NF25 0.25 ±0.02
NF32 0.32 ±0.02
NF36 0.36 ±0.02
NF38 0.38 ±0.02
NF40 0.40 ±0.02
NF43 0.43 ±0.02
NF46 0.46 ±0.02
NF52 0.52 ±0.02
NF60 0.60 ±0.02

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

Alloy brand Chemical element
Ni % Fe %
NF13 85-95 Rest
NF15 75-85 Rest
NF20 70-75 Rest
NF23 60-65 Rest
NF25 60-65 Rest
NF32 50-55 Rest
NF36 50-55 Rest
NF38 50-55 Rest
NF40 50-55 Rest
NF43 45-50 Rest
NF46 45-50 Rest
NF52 45-50 Rest
NF60 45-50 Rest

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

Alloy brand 120℃ Temperature coefficient PPM The tolerance range PPM
NF13 4200 ±300
NF15 4400 ±300
NF20 4500 ±300
NF23 4800 ±300
NF25 4600 ±300
NF32 4200 ±300
NF36 3800 ±300
NF38 4000 ±300
NF40 3800 ±300
NF43 3400 ±300
NF46 3200 ±300
NF52 3000 ±300
NF60 2500 ±300

Mechanical properties (tensile strength)

Category Diameter range
mm
Elongation rate
≥ %
Cold drawn wire 0.05 > d < 0.1 ≥ 18
0.1 > d < 0.3 ≥ 20
0.3 > d < 0.5 ≥ 20
0.5 > d < 1.0 ≥ 20

Size (diameter)

Alloy Code Diameter mm
Wire Rod Wire rod
NF13 0.05-8.0 12-30 8-14
NF15 0.05-8.0 12-30 8-14
NF20 0.05-8.0 12-30 8-14
NF23 0.05-8.0 12-30 8-14
NF25 0.05-8.0 12-30 8-14
NF32 0.05-8.0 12-30 8-14
NF36 0.05-8.0 12-30 8-14
NF38 0.05-8.0 12-30 8-14
NF40 0.05-8.0 12-30 8-14
NF43 0.05-8.0 12-30 8-14
NF46 0.05-8.0 12-30 8-14
NF52 0.05-8.0 12-30 8-14
NF60 0.05-8.0 12-30 8-14

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PTC Ni-Fe Alloy Wire Low Curie Point And Medium Saturation Polarization For Inductors

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Brand Name :
Senphus
Model Number :
NF46
Certification :
SGS, ISO9001
Place of Origin :
Jiangsu, China
MOQ :
5 kg
Price :
TBD
Contact Supplier
PTC Ni-Fe Alloy Wire Low Curie Point And Medium Saturation Polarization For Inductors
PTC Ni-Fe Alloy Wire Low Curie Point And Medium Saturation Polarization For Inductors
PTC Ni-Fe Alloy Wire Low Curie Point And Medium Saturation Polarization For Inductors

Jiangyin Chengxin Alloy Material Co., Ltd ,

Verified Supplier
1 Years
jiangsu, changzhou
Since 2003
Business Type :
Manufacturer, Exporter, Seller
Total Annual :
230000000-240000000
Employee Number :
1400~1500
Certification Level :
Verified Supplier
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