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NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
Specifications
Brand Name :
Senphus
Model Number :
NF38
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 NF38
Material :
Ni, Fe
Application :
Applicable to various electric heaters
Diameter :
0.05 mm-30 mm
Description

NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38

NF38 Ni50%-55% PTC Ni-Fe Alloy Wire is recognized for its medium resistivity and high positive temperature coefficient of resistance, which makes it extensively used in various heating applications. This alloy can automatically control temperature and adjust power by maintaining constant current and limiting current, offering several advantages such as automatic temperature control, automatic power regulation, constant current, current limiting, energy saving, and a long practical life. Customization is also a key feature, as the wire can be tailored to meet specific requirements regarding temperature coefficient, resistivity, and diameter, making it highly adaptable to various applications.
NF38, in particular, has a resistivity at 20°C of 0.38 μΩm with a tolerance range of ±0.02, indicating its precision in electrical resistance performance. The alloy's properties render it suitable for applications where precise control of heat and power is necessary, such as in temperature-sensitive resistors and heating elements.

Main Chemical Composition Wt.% NF38 PTC Ni-Fe Alloy % Ni Fe
Min 50
Max 55 Bal.

Key features of PTC Ni-Fe alloy with NF38 include:

  1. High Permeability and Magnetic Properties

  • Soft magnetic material: It exhibits high magnetic permeability, making it suitable for use in electromagnetic components.
  • Low coercivity: It requires minimal energy to magnetize and demagnetize.
  • Excellent for transformers, magnetic shields, and other components in electrical and magnetic systems.Corrosion Resistance: The nickel content enhances the alloy’s resistance to oxidation and corrosion, making it durable in challenging environments.

  1. Temperature Coefficient of Resistivity

    • Positive Temperature Coefficient (PTC): The resistivity increases with rising temperature, which is useful for temperature sensing and control applications.

  • Provides stability in electrical resistance over certain temperature ranges.

  1. High Electrical Resistivity

  • Offers better resistance to electrical current flow compared to other magnetic alloys, which is beneficial for reducing energy losses in magnetic circuits.

  1. Thermal Stability

  • Performs reliably across a wide temperature range, making it suitable for applications in varying environmental conditions.

  1. Mechanical Properties

  • Good ductility and machinability allow for manufacturing into thin sheets, wires, or other forms.​

  1. Corrosion Resistance

  • The nickel content enhances the alloy’s resistance to oxidation and corrosion, making it durable in challenging environments.

Applications:

  • Magnetic cores in transformers, inductors, and chokes.
  • Thermistors and other temperature-sensitive devices.
  • Magnetic shielding for electronic devices.
  • Precision instrumentation where consistent magnetic properties are critical.

This alloy's combination of magnetic, thermal, and mechanical properties makes it highly valuable in industrial, electrical, and electronic applications.

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

Support and Services:

1. Technical Consultation

2. Product Selection

3. Time Guarantee

4. Warranty and After-Sales Support

Q&A:

1. What is the minimum order quantity?

The MOQ is 5kg, but if you need samples, please contact us.

2. Are your products safe and environmentally friendly?

Our products have passed the SGS test report, for the European Chemicals Agency and WTO concern SVHC content below the specified 0.1%, and passed the ISO9001 quality system certification.

2. How to choose products with different diameters and resistivity

We have product experts who are familiar with the use of the scenario to help determine the product, you can send email or contact us via chat software.

NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38

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NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38

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Product Detail
Brand Name :
Senphus
Model Number :
NF38
Certification :
SGS, ISO9001
Place of Origin :
Jiangsu, China
MOQ :
5 kg
Price :
TBD
Contact Supplier
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38
NF38 Ni50%-55% PTC Ni-Fe Alloy Wire for Overcurrent Protection and Effective Temperature Regulation Resistance 0.38

Jiangyin Chengxin Alloy Material Co., Ltd ，

Verified Supplier
1 Years
jiangsu, changzhou
Since 2003
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Pure Nickel Metal, NiCr Alloy, CuNi Alloy
Total Annual :
230000000-240000000
Employee Number :
1400~1500
Certification Level :
Verified Supplier
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