Jiangyin Chengxin Alloy Material Co., Ltd ，
Jiangsu Xiangcheng Supply Chain Management Co. LTD
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PTC Ni-Fe Alloy Wire NF15 for Different Electric Heaters, Resistivity 0.15
The product exhibits a resistivity of 0.15 at a temperature of 20°C, with a tolerance range of ±0.02.
This alloy is designed to exhibit a marked increase in electrical resistance as its temperature rises, which is a characteristic of PTC materials.The NF15 PTC Ni-Fe alloy is a high-performance Positive Temperature Coefficient (PTC) material. Its key feature is the significant increase in electrical resistance as the temperature rises above the Curie temperature. This makes NF15 ideal for self-regulating heating elements, overcurrent protection, and temperature sensing applications. The alloy offers good thermal stability, corrosion resistance, and mechanical properties, making it suitable for use in electronics, automotive, industrial heating, and electrical protection systems. Its ability to limit current flow as it heats up makes it particularly useful for temperature protection in a wide range of devices and systems.
| Main Chemical Composition Wt.% NF15 PTC Ni-Fe Alloy | % | Ni | Fe |
| Min | 75 | ||
| Max | 85 | 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 | |||
Some key features of NF15 include:
Applications:
Electrical Contacts: Used for reliable current transmission in switches, relays, and connectors.
Sensors: Employed in temperature and position sensors for precise measurements.
Guidance Systems: Integrated into precision guidance and control systems.
Actuators: Utilized in actuators for accurate and reliable movement.
Fuel Systems: Applied in fuel injection systems for efficient fuel delivery.
Emission Control: Used in exhaust gas sensors for monitoring and controlling emissions.
Heating Elements: Suitable for use in heating elements due to its high resistance and temperature stability.
Corrosion-resistant Components: Ideal for components exposed to corrosive environments.
PTC Ni-Fe Alloy NF15 versatility and reliability make it a valuable material in these and other demanding applications.
Size and Configuration:
NF15 can be manufactured in various sizes, including thin films, wires, and coils. This versatility allows for integration into different types of devices, such as temperature sensors, heating systems, and protective circuits.
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. 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.
3. Can you only produce products with such resistivity or temperature coefficient?
We can customize products according to the actual needs of customers, if there is any need, please inform us.
