NF23 PTC Ni-Fe Alloy Ferronickel Wire For Electric Blanket, Resistivity 0.23
The product exhibits a resistivity of 0.23 at a temperature of
20°C, with a tolerance range of ±0.02.
The PTC Ni-Fe alloy NF23 is a nickel-iron alloy composed of
approximately 65% nickel. Known for its positive temperature
coefficient (PTC) properties, this alloy sees its electrical
resistance increase as temperature rises, making it ideal for
applications where temperature-sensitive resistance is needed.
Ni-65’s combination of moderate electrical resistivity, thermal
stability, and durability at high temperatures enables it to
perform reliably in a range of industrial environments.
NF23 is widely used in applications such as temperature sensors,
thermistors, and current-limiting devices, where it ensures precise
thermal control and regulation. In addition to its thermal
stability, it offers high corrosion and oxidation resistance, which
makes it well-suited for harsh environments found in the
automotive, aerospace, and industrial sectors. Its robust nature
allows it to be employed in overcurrent protection devices, heating
elements, and battery management systems, where consistent
performance is required under demanding thermal conditions. NiF23’s
features make it a versatile and reliable material for advanced
thermal management and safety applications across multiple
industries.
| Main Chemical Composition Wt.% NF23 PTC Ni-Fe Alloy | % | Ni | Fe |
| Min | 60 | |
| Max | 65 | Bal. |
Key features of the PTC Ni-Fe alloy NF23 include:
1. Positive Temperature Coefficient (PTC):
NF23’s resistance increases with temperature, making it effective
for applications where automatic current limiting or
temperature-sensitive responses are needed.
2. Moderate Electrical Resistivity:
It has an optimal resistivity level for current-limiting devices,
self-regulating heating elements, and precision resistors in
various electronic circuits.
3. Thermal Stability:
NF23 provides reliable performance over a wide temperature range,
ensuring consistent resistance behavior in applications exposed to
temperature variations.
4. Corrosion and Oxidation Resistance:
The alloy resists degradation in harsh and corrosive environments,
ideal for industrial applications where longevity is important.
5. High-Temperature Durability:
NF23 maintains its structural integrity and functionality at
elevated temperatures, supporting its use in demanding thermal
environments.
6. Application Versatility:
The alloy’s properties make it suitable for use in temperature
sensors, overcurrent protectors, heating elements, and battery
management systems across fields like automotive, aerospace, and
industrial electronics.
These features make NF23 a reliable choice for
temperature-responsive applications that require stable,
high-performance materials.
Applications:
- Proton Exchange Membrane Fuel Cells (PEMFCs)
- Catalysts in Electrochemical Reactions
- Automotive and Aerospace Industry
- Corrosion-resistant Coatings
- Heat Treatment Equipment
- Chemical Processing
- Marine Applications
These applications highlight the versatility of NF23 alloy in
industries where high-temperature performance, corrosion
resistance, and catalytic efficiency are critical .
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. 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.
