NF43 PTC Ni-Fe Alloy High Resistance Heating Wire For Metallurgical Industry

Product Specification

NF43 Nickel Content 45%-50% PTC Ni-Fe Alloy Rod For Metallurgical Industry, Resistance 0.43

The product exhibits a resistivity of 0.43 at a temperature of 20°C, with a tolerance range of ±0.02.

PTC Ni-Fe alloys NF43 with 45-50% nickel content are nickel-iron alloys designed for applications requiring a positive temperature coefficient (PTC), where electrical resistance increases with rising temperature. This property makes these alloys ideal for temperature-sensitive and self-regulating applications, including sensors, thermistors, and heating elements. The Ni-Fe alloys in this composition range offer moderate resistivity and consistent thermal performance, suitable for varied industrial environments.

With strong resistance to oxidation and corrosion, these alloys perform reliably in challenging conditions, making them a preferred choice for automotive, aerospace, and industrial electronics applications. Their durability at high temperatures allows them to function effectively in overcurrent protection devices, where they help control current flow to prevent overheating. Additionally, these alloys are widely used in battery management and temperature control systems, providing stable and self-regulating solutions. The NF43 alloys offer versatility and reliability, supporting advanced thermal regulation and protection across various industries.

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)

Key Features of PTC Ni-Fe Alloy NF43 Include:

1. Positive Temperature Coefficient (PTC): NF43's resistance increases with temperature, making it ideal for applications that require temperature-sensitive or self-regulating properties.
2. Moderate Electrical Resistivity: With balanced resistivity, this alloy is well-suited for components like thermistors, current limiters, and heating elements where controlled resistance is needed.
3. Thermal Stability: NF43 performs reliably across a broad temperature range, offering consistent resistance behavior in fluctuating or high-temperature environments.
4. Corrosion and Oxidation Resistance: This alloy resists corrosion and oxidation, which enhances its durability, especially in harsh or challenging environments.
5. High-Temperature Tolerance: NF43 can withstand elevated temperatures without significant degradation, making it suitable for demanding thermal applications such as overcurrent protection and industrial heating.

These features make NF43 a reliable and adaptable alloy for advanced thermal management and protection in multiple industries.

Applications:

• Temperature Sensors: Due to its PTC behavior, NF43 is ideal for temperature sensors used in automotive, industrial, and HVAC systems, where resistance changes with temperature to monitor and control heat.
• Thermistors: The alloy is widely used in thermistors for precise temperature-sensitive resistance, suitable for applications in electronics, home appliances, and medical devices.
• Self-Regulating Heating Elements: NF43 is used in self-regulating heating elements that automatically adjust heat output with temperature changes, commonly applied in electric heaters, defrosters, and industrial heating systems.
• Overcurrent Protection Devices: This alloy helps in overcurrent protection by increasing resistance as temperature rises, making it ideal for use in fuses, circuit breakers, and surge protectors to prevent electrical overloads.
• Battery Management Systems: NF43 alloys help regulate temperature in battery management systems for electric vehicles, portable electronics, and other battery-powered devices, providing thermal control to prevent overheating.
• Current Limiting Devices: The alloy’s resistance increases with temperature, allowing it to function as a current limiter in electrical circuits, protecting sensitive components from high current surges.
• Aerospace and Automotive Electronics: NF43 alloys are used in sensors and other electronic components in aerospace and automotive sectors, where high durability and reliability are required under extreme conditions.

These applications leverage NF43's PTC characteristics, thermal stability, and durability, making it a versatile choice for industries requiring advanced thermal management and protection.

Support and Services:

1. Technical Consultation

2. Product Selection

3. Time Guarantee

4. Warranty and After-Sales Support

Q&A: 

1. Where can this product be applied?

This material is widely used in various electrical heaters, such as car seat heating, snow melting heating, electric floor heating, etc. 

2. Is your product safe and environmentally friendly?** Our product has passed SGS test reports, the SVHC content, which is of concern to the European Chemicals Agency and WTO, is lower than the specified 0.1%, and it has also passed the ISO9001 quality system certification. 

3. What is the minimum order quantity for customers?

If the desired product is in stock, we can provide a single piece as a sample. If the stock is insufficient, the minimum order quantity is 5kg. 

4. How do you guarantee product quality?

Advanced manufacturing processes are used, with three samples taken for inspection during production. The quality inspection standards are high, consistent with Swedish KANTHAL, and ISO9001 certified.