NF32 Nickel Content 50-55 PTC Ni-Fe Alloy Wire for Temperature-Sensitive Applications, Resistance 0.32

The product exhibits a resistivity of 0.32 at a temperature of 20°C, with a tolerance range of ±0.02.

The PTC Ni-Fe alloy NF32 with 50%-55% nickel content is a nickel-iron alloy valued for its positive temperature coefficient (PTC) properties, which cause its electrical resistance to increase with rising temperature. This temperature-responsive behavior makes it ideal for applications requiring precise thermal regulation and self-limiting capabilities. The alloy’s moderate resistivity and stable thermal performance enable reliable operation over a wide range of temperatures, making it especially useful in temperature-sensitive applications.

Commonly used in components such as temperature sensors, thermistors, and self-regulating heating elements, the Ni-Fe alloy’s PTC properties allow it to provide automatic temperature control and protection. Its corrosion resistance and durability in high-temperature environments also make it suitable for use in harsh industrial, automotive, and aerospace conditions. Additionally, this alloy finds applications in overcurrent protection devices and battery management systems, where its resistance changes help prevent overheating and ensure safe operation.

With its unique combination of PTC behavior, thermal stability, and corrosion resistance, Ni-Fe alloy NF32 with 50%-55% nickel content serves as a versatile and reliable material for advanced thermal management, self-regulating heating, and safety applications across multiple industries.

Some key features of NF32 include:

1. Low Coercive Field:

2. Magnetic Properties:

These alloys have tunable magnetic properties, including the ability to adjust the Curie point and Hopkinson peak, which are crucial for non-contact temperature sensing technology.

3. Shape Memory Effect:

4. Corrosion Resistance:

5. Thermal Stability:

NF32alloys have a low Curie point (20 < Tc < 450 °C), which contributes to their thermal stability and makes them suitable for applications involving temperature-controlled processes.

6. High Permeability:

7. Low Remanence:

8. Metallurgical Flexibility:

9. Additive Manufacturing Compatibility:

NF32 alloys can be used in additive manufacturing processes to create complex geometries for various applications, including actuators and sensors.

10. Energy Conversion Efficiency:

Applications:

• Temperature Sensors:
  • NF32’s positive temperature coefficient (PTC) behavior makes it ideal for temperature sensors in automotive, industrial, and HVAC systems, where precise temperature monitoring is essential.
• Thermistors:
  • ​The alloy’s PTC properties enable its use in thermistors for appliances, electronics, and industrial equipment, where temperature-sensitive resistance helps regulate system operations.
• Self-Regulating Heating Elements:
  • NF32 is used in heating elements that automatically adjust their heat output with temperature changes, commonly found in defrosters, electric heaters, and warming devices.
• Overcurrent Protection Devices:
  • The alloy is applied in circuit breakers, fuses, and other overcurrent protection components, where increased resistance helps limit current flow during high temperatures to prevent damage.
• Battery Management Systems:
  • NF32 alloys help regulate and stabilize temperature in battery packs, ensuring safe operation in electric vehicles, power tools, and portable electronics by preventing overheating.
• Current Limiting Devices:
  • The PTC behavior of NF32 allows it to serve in current limiting devices, protecting sensitive electronic components by automatically increasing resistance and reducing current in response to rising temperatures.

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)

Support and Services:

1. Technical Consultation

2. Product Selection

3. Time Guarantee

4. Warranty and After-Sales Support

Q&A:

1. Can this product be made into alloy wire?

Yes, each product model can be made in the diameter range of 0.05mm-30mm, can be customized.

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.

3. What is the minimum quantity the customer can order?

If the stock of the required product is sufficient, we can provide a single copy as a sample, if the stock is insufficient, the minimum order quantity is 5kg.

Company Overview:

Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and preci.sion of our products. We have the tightest tolerances and deliver within a few days to a fewweeks. As a result, we have become the leading alloy wire supplier in the industry.

Senphus Subsidiaries:

• Jiangyin Chengxin Alloy Material Co., Ltd.
• Jiangyin Senphus Electrical Materials Co., Ltd.
• Jiangsu Xiangcheng Supply Chain Management Co., Ltd.

Jiangyin Chengxin Alloy Material Co., Ltd.: With nearly 20 years of experience, Jiangyin Chengxin is a leading alloy wire manufacturer in China. We offer a wide range of services, from fine wire drawing to resistance wire manufacturing. Our specialty lies in the quality and precision of our products, achieving the tightest tolerances and delivering orders within days to weeks. As a result, we have established ourselves as the premier supplier of alloy wire in the industry.

Our product range includes:

• Copper-nickel alloys (CuNi1-CuNi44)
• Karma (Nikrothal L/Evanohm/Alloy 800)
• Manganin and Constantan
• Nickel-chromium alloys
• Thermocouple alloys (Type K, N, E, T, J)
• Thermocouple extension wire
• PTC thermistor resistance alloy
• Pure nickel wire and Monel alloy

These alloys are available in various forms, including wire, ribbon, stranded, and enamelled. Major applications include seat heating, underfloor heating, military projects, aerospace, household appliances, heating wire, mechanical and electrical plants, and temperature instruments. Our manufacturing processes are ISO 9001:2015 certified, and we specialize in fine and ultra-fine wire drawing, offering wire diameters from 0.025 mm (0.001") to 13 mm (0.51") in small batches, medium volumes, and mass production. We maintain a comprehensive quality inspection system, including in-house chemical analysis, chromatographic analysis, metallurgical analysis, pinhole tests, wire construction tests, and tension tests to ensure the highest quality standards.

Senphus Electrical Material Co., Ltd.: Founded in 2003, Senphus Electrical Material Co., Ltd. integrates research, manufacturing, and sales of electric heating alloys, heating cables, heating wires, and heating products. Leveraging over a decade of technical expertise in heating alloy wire, we have adopted advanced heating cable technology and machinery, successfully developing heating cables, temperature controllers, and temperature control systems suitable for building heating, pipe insulation, outdoor snow melting, wind power blade production, car seat heating, and healthcare applications.

The company is recognized as a high-tech enterprise in Jiangsu Province and a small giant enterprise in Jiangyin City, specializing in innovative technologies. We operate the "Wuxi Heating Cable Engineering Technology Research Center" and collaborate with experts from renowned domestic universities. Our portfolio includes 5 invention patents and over 30 utility model patents, showcasing our strong research and development capabilities.

With an annual output exceeding 1,000 tons of thermal alloy wire and an output value of approximately 105 million yuan, our products are well-received in markets such as the UK, Italy, Canada, Peru, and Spain. Our heating cables generate an annual output value of over 80 million yuan, with exports to Germany, Japan, the United States, Malaysia, Denmark, Brazil, and other countries.

The company has successfully passed multiple quality management system certifications, including IATF 16949, ISO 9001, ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). Our heating cables and related products have also obtained test reports from the Shanghai Cable Research Institute Test Center and received certifications such as UL (United States), VDE (Germany), CE (European Union), and RoHS.

Commitment to Quality: We adhere to the business commitment of "Reputation First, Quality First, Customer First" and uphold the quality policy of "Integrity-Based, Quality-Oriented, Excellent Service." We are dedicated to providing accurate products and professional services, and we look forward to collaborating sincerely with you to achieve mutual success.