NF23 PTC Ni-Fe Alloy Wire for Precise Thermal Control and Regulation in Current

Product Specification

Payment Terms	T/T, D/P	Supply Ability	30 Tons Per Day
Delivery Time	3 days	Packaging Details	Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.
Product name	PTC Ni-Fe Alloy Wire NF23	Material	Ni, Fe
Application	Applicable to various electric heaters	Diameter	0.05 mm-8 mm
Brand Name	Senphus	Model Number	NF23
Certification	SGS, ISO9001	Place of Origin	Jiangsu, China
High Light	NF23 PTC Ni-Fe Alloy Wire ，Precise PTC Ni-Fe Alloy Wire

PTC Ni-Fe Alloy Wire NF23 for Different Electric Heaters, Resistance 0.23

 

PTC Ni-Fe alloy NF23 is a unique material known for its positive temperature coefficient (PTC) effect, which allows it to self-regulate heat output in response to temperature changes. This alloy is particularly effective in electrochemical applications, such as in the oxygen evolution reaction (OER), where it demonstrates impressive catalytic activity with an overpotential of 242 mV at 10 mA cm⁻² in 1.0 M KOH. Its high electrical resistivity and the ability to facilitate hydrogen evolution reactions (HER) make it a bifunctional catalyst for overall water splittin.

 

The alloy's resistance to corrosion and oxidation at elevated temperatures is another key feature, making it suitable for high-temperature applications in various industries, including chemical processing and marine engineering. NF23's thermal stability up to 1300°C is also noteworthy, which is crucial for its use in industrial furnaces and heating systems .

 

Mechanically, Ni-65 alloy exhibits good strength and hardness, which can be further enhanced through cold working and heat treatment processes. Its good electrical and thermal conductivity make it an ideal material for resistance heating components.

 

In terms of market applications, NF23 alloy is in high demand across the aerospace, gas & oil, and electrical & electronics sectors for its combination of properties like ductility, malleability, corrosion resistance, and strength. It also shows potential as a catalyst in fuel cells and other electrochemical devices due to its efficient catalytic performance .

 

In summary, PTC Ni-Fe alloy NF23 is a high-performance material with significant potential in catalytic, corrosion-resistant, and high-temperature applications, underpinning its importance in the modern industry .

 

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:

 

 

 

Applications:

• Proton Exchange Membrane Fuel Cells (PEMFCs):

NF23 alloy is used in PEMFCs as a catalyst material to enhance the efficiency and durability of the fuel cell, particularly in the cathodic oxygen reduction reaction (ORR) .​

• Catalysts in Electrochemical Reactions: 

The alloy's composition makes it suitable for use in electrocatalysts, where it can facilitate oxygen evolution reactions (OER) and hydrogen evolution reactions (HER) .

• Automotive and Aerospace Industry:

NF23 alloy can be employed in high-temperature applications within the automotive and aerospace industries, such as turbine discs, due to its high strength and resistance to corrosion at elevated temperatures .

• Corrosion-resistant Coatings:

Given its resistance to various corrosive environments, NF23 alloy can be used in protective coatings for components that are exposed to harsh conditions .

• Heat Treatment Equipment: 

The alloy's high-temperature stability and resistance to oxidation make it suitable for use in heat treatment furnaces and related equipment .

• Chemical Processing:

NF23 alloy can be utilized in chemical processing equipment, especially where there is exposure to aggressive chemicals and high temperatures .

• Marine Applications:

Due to its resistance to seawater corrosion, NF23 alloy is appropriate for marine hardware and equipment that operates in saline environments .

 

 

 

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.