Jiangyin Chengxin Alloy Material Co., Ltd ，
Jiangsu Xiangcheng Supply Chain Management Co. LTD
Add to Cart
NF20 PTC Ni-Fe Alloy High Temperature Heating Element Wire Nickel Plated Resistivity 0.20
The product exhibits a resistivity of 0.20 at a temperature of 20°C, with a tolerance range of ±0.02.
PTC Ni-Fe alloy NF20 is a high-quality material that stands out due to its unique combination of properties. Primarily consisting of nickel and iron with a nickel content of approximately 70% to 75%, this alloy offers excellent electrical conductivity, making it suitable for applications requiring efficient current flow. It also possesses notable magnetic properties, which make it ideal for use in magnetic sensors, actuators, and other magnetic devices. Furthermore, PTC Ni-Fe alloy NF20 exhibits good mechanical strength and ductility, allowing it to withstand various mechanical stresses. Its corrosion resistance ensures durability and reliability in harsh environments, while its temperature stability makes it suitable for use in high-temperature applications. Overall, PTC Ni-Fe alloy NF20 is a versatile and dependable material that is widely used in the electronics, aerospace, automotive, and industrial sectors for its exceptional characteristics and performance.
| Main Chemical Composition Wt.% NF20 PTC Ni-Fe Alloy | % | Ni | Fe |
| Min | 70 | ||
| Max | 75 | Bal. |
Some key features of PTC Ni-Fe alloy NF20 include:
Applications of PTC Ni-Fe alloy NF20 include:
The alloy’s PTC effect and high resistivity make it ideal for use in electrical heating elements and resistors that require consistent, controlled heating.
NF20 is commonly used in thermistors and temperature sensors due to its predictable resistance change with temperature, which provides accurate thermal readings for temperature monitoring and control.
Its PTC behavior is valuable for overload protection in electrical circuits, where the increase in resistance at higher temperatures helps to regulate or limit current flow, preventing overheating and equipment damage.
NF20 alloy is used in temperature-sensitive automotive components, such as exhaust sensors and engine temperature regulators, where its high durability and thermal stability are essential.
With its corrosion resistance and ability to withstand high temperatures, NF20 is suited for demanding environments in aerospace and industrial electronics, where stable performance and longevity are critical.
In appliances like toasters, irons, and hairdryers, NF20 alloy helps regulate temperature by ensuring controlled heating, contributing to energy efficiency and safety.
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 | |||
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. What are the terms of payment?
We support T/T or D/P, but sometimes it depends on the order volume and the way of trade.
3. What are your service hours?
We will respond within 24 hours of receiving a message, whether on weekdays or holidays.
