NF25 Nickel Content 60-65% PTC Ni-Fe Alloy Wire for Electric Blanket, Resistance 0.25

PTC Ni-Fe alloy NF25 is a nickel-iron alloy with approximately 60% nickel and 40% iron, known for its positive temperature coefficient (PTC) properties. As the temperature increases, NF25’s electrical resistance rises, making it ideal for temperature-sensitive and self-regulating applications. This unique property allows Ni-60 to be effectively used in various industrial, automotive, and electronic applications where thermal stability and precise temperature response are essential.

The alloy’s moderate electrical resistivity, high-temperature tolerance, and good corrosion resistance make it suitable for components like current limiters, temperature sensors, thermistors, and self-regulating heating elements. In particular, NF25 is valued in applications such as overcurrent protection devices and battery management systems, as well as in automotive and aerospace electronics that demand consistent performance in extreme conditions.

NF25’s reliability in fluctuating or high-temperature environments makes it versatile and useful for a range of applications requiring robust thermal control and protection. These qualities make NF25 a preferred choice for industries focused on safety and precision in thermal and electrical regulation.

Key features of the PTC Ni-Fe alloy NF25 include:

1. Positive Temperature Coefficient (PTC): NF25’s resistance increases with temperature, making it ideal for applications requiring self-regulating heating or temperature-sensitive components.
2. Balanced Electrical Resistivity: With a suitable level of resistivity, NF25 is effective for current-limiting devices and heating applications where controlled resistance is essential.
3. Good Thermal Stability: NF25 maintains consistent performance over a wide temperature range, offering reliable behavior in temperature-variable environments.
4. Corrosion Resistance: This alloy is resistant to oxidation and corrosion, making it suitable for use in challenging or humid environments.
5. High-Temperature Endurance: NF25retains its structural integrity and functionality at high temperatures, allowing it to be used in applications with demanding thermal requirements.
6. Versatile Application Range: Its properties make NF25 well-suited for temperature sensors, current limiters, heating elements, and thermal protection devices, used across industries such as automotive, electronics, and industrial manufacturing.

These features make NF25 a durable and adaptable choice for applications requiring stable and responsive thermal behavior.

Applications:

• Temperature Sensors

Due to its PTC behavior, NF25 is widely used in temperature sensors for automotive, industrial, and HVAC systems where resistance change can be monitored to track temperature shifts accurately.

• Current Limiting Devices

NF25’s positive temperature coefficient allows it to act as a self-regulating current limiter, making it suitable for applications requiring overcurrent protection in circuits and electrical systems.

• Heating Elements and Thermistors

NF25 is used in self-regulating heating elements and thermistors, providing consistent heat generation and control in appliances, climate control systems, and industrial heating applications.

• Overload Protection Components

The alloy’s increasing resistance with temperature helps prevent electrical overloads, making it useful in fuses, circuit breakers, and other protective devices.

• Battery Management Systems

In electric vehicles and other battery-powered equipment, NF25 assists with thermal regulation to maintain safe and stable battery temperatures.

• Aerospace and Automotive Electronics

NF25’s durability in high-temperature environments makes it valuable for electronic components and sensors in aerospace and automotive sectors, where materials need to perform reliably under extreme conditions.

These applications leverage NF25’s stable thermal response, PTC characteristics, and resilience, making it a versatile choice for industries requiring precise thermal and electrical control.

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 you provide free samples?

If the samples you need happen to be in stock, we can provide samples free of charge.

2. If we use custom products, will the price be higher?

Usually our prices are higher for special products, because it is related to production efficiency, but all prices depend on the quantity of the order.

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.