NF43 PTC Ni-Fe Alloy Wire 45-50% Nickel Content Resistance 0.43 for Temperature-Sensitive and Self-Regulating Applications, 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 alloy NF43 with 45-50% nickel content is a nickel-iron alloy known for its positive temperature coefficient (PTC) properties, where its electrical resistance increases as the temperature rises. This characteristic makes it ideal for applications that require temperature-sensitive regulation, such as thermistors, temperature sensors, and self-regulating heating elements. The alloy’s moderate electrical resistivity ensures stable and controlled performance across a wide temperature range, making it suitable for various industrial, automotive, and electronic applications.
The Ni-Fe alloy in this range is highly resistant to corrosion and oxidation, enhancing its durability in harsh environments. It can withstand high temperatures without significant degradation, making it useful in overcurrent protection devices and heating systems. Ni-Fe alloys NF43 with 45-50% nickel content are also employed in battery management systems, where they help prevent overheating and ensure safe operation. Their combination of thermal stability, durability, and PTC behavior makes them versatile materials for advanced thermal control applications.
| Main Chemical Composition Wt.% NF43 PTC Ni-Fe Alloy | % | Ni | Fe |
| Min | 45 | |
| Max | 50 | Bal. |
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 |
Key Features of PTC Ni-Fe Alloy NF43 Include:
- Positive Temperature Coefficient (PTC):
Ni-Fe alloys with 45-50% nickel content exhibit an increase in electrical resistance as temperature rises, making them ideal for self-regulating applications like temperature sensors and heating elements.
- Moderate Electrical Resistivity:
The alloy has a balanced resistivity that is well-suited for use in temperature-sensitive components, such as thermistors, current-limiting devices, and heating systems.
- Thermal Stability:
NF43 offers stable performance across a broad temperature range, ensuring consistent operation in both high and fluctuating temperature environments.
- Corrosion and Oxidation Resistance:
This alloy is resistant to corrosion and oxidation, making it durable and reliable in harsh industrial and outdoor conditions.
- High-Temperature Durability:
NF43 can withstand elevated temperatures without significant degradation, making it ideal for high-temperature applications like overcurrent protection and thermal regulation systems.
- Self-Regulating Properties:
The PTC characteristic allows the alloy to adjust its resistance based on temperature changes, making it effective in current-limiting and self-regulating heating applications.
- Versatility:
NF43 is used in a wide range of applications, including temperature sensors, battery management systems, overcurrent protection, and heating elements across various industries.
Applications:
- Temperature Sensors: NF43 alloys are used in temperature sensors, where their PTC behavior allows for accurate monitoring of temperature changes and regulation in various systems, including automotive and industrial applications.
- Thermistors: The alloy is commonly used in thermistors, which are temperature-sensitive resistors, for applications such as home appliances, medical devices, and temperature control systems.
- Self-Regulating Heating Elements: NF43 is used in heating elements that automatically adjust their heat output based on temperature, found in devices like electric heaters, defrosters, and climate control systems.
- Overcurrent Protection Devices: Due to its PTC properties, NF43 is used in fuses, circuit breakers, and other overcurrent protection devices, where it helps prevent overheating by increasing resistance and limiting current flow under high temperatures.
- Battery Management Systems: NF43 alloys are employed in battery management systems to regulate temperature, ensuring safe operation and preventing overheating in electric vehicles and portable electronic devices.
- Current Limiting Devices: The alloy is used in devices that require automatic current limiting to protect sensitive electronic components from damage due to excessive current flow.
These applications take advantage of NF43’s thermal stability, corrosion resistance, and PTC properties, providing efficient and reliable solutions for temperature regulation and protection across various industries.
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.
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NF43 PTC Ni-Fe Alloy Wire 45-50% Nickel Content for Temperature-Sensitive and Self-Regulating Images
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