0.4mm (26 AWG) NiFe70 Wire (70% Ni) Nickel Wire


NiFe70 wire, measuring 0.4mm (26 AWG), is a versatile and durable material composed of 70% nickel, renowned for its corrosion resistance and thermal conductivity. Ideal for use in heating systems, thermal sensors, and various electrical components, it offers consistent performance and longevity.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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NiFe70 Wire

The Crazy Wire Company are best know as suppliers of top quality NiFe70 wire. We have enormous stock levels at all times, as we use this wire to weave our top quality woven mesh products. Our brilliant staff are experts in producing our spools of round wire on our 6 rapid action winding machines. All spools are produced to carry a little extra length to make up for any waste when handling the product.

NiFe70 wire, with a specification of 0.4mm (26 AWG), is a specialised material composed of 70% nickel. The materials have excellent properties that make them suitable for a wide range of applications. Among the primary benefits of NiFe70 wire is its resistance to corrosion, which ensures longevity and reliability in harsh environments, reducing the need for frequent replacements and maintenance. The properties of this material are particularly beneficial in industries exposed to corrosive substances on a regular basis.

Another design feature of the wire is its thermal conductivity, which makes it an ideal material for heating systems, from industrial heaters to domestic appliances. The ability to efficiently conduct heat makes it ideal for applications where uniform temperature distribution is crucial. A NiFe70 wire’s stable thermal expansion properties also make it suitable for use in thermal sensors and controls. Stability is essential for applications requiring precision and accuracy in temperature measurement and control.

Specification of Wire:

  • Diameter – 0.4mm (400 Micron – 26AWG)
  • Ohms/m – 1.59

Why Use The Crazy Wire Company

  1. Quality of products: The Crazy Wire Company always  offer high-quality products that meet industry standards and customer expectations.
  2. Selection: We offer a wide variety of wire products and sizes to meet the diverse needs of our customers. We have more than 600 products available through our site and counting. 
  3. Price: We always offer the best value possible. Our wires are available as part of our major weaving processes, so it is bought at the best possible rate. 
  4. Availability: Our products are kept in house and are ready to ship immediately. 
  5. Customer service: Our experienced staff help our customers feel confident in their purchases and provide assistance when required. 

What Else Is Available?

We do not only offer NiFe70 wire. We also have a huge range of KA1 and stainless steel round wire in immediate stock too.

Ribbon wire and flat wire are stocked for immediate dispatch too.


FAQs About This Wire

How Does NiFe70 Wire React To Extreme Environmental Conditions?

Nickel-rich NiFe70 wire holds up well to extreme environmental conditions, making it a robust material for a variety of applications. Due to its superior corrosion resistance, NiFe70 wire will remain intact in conditions with high humidity or high exposure to corrosive elements, like saline or acidic conditions. Over time, this feature prevents the wire from degrading rapidly, preserving its functionality and structural integrity.

High and low temperatures can both be tolerated by NiFe70 wire when it comes to temperature fluctuations. As a result of its thermal stability, it functions effectively in environment where extreme temperatures are common, without compromising its mechanical properties or succumbing to thermal fatigue. It is especially useful for applications such as heating systems and thermal sensors, where it is crucial to maintain consistent performance at varying temperatures.

Furthermore, NiFe70 wire demonstrates good resistance to mechanical stress, being able to maintain its properties under pressure, twisting, or other forms of physical strain. Physical stress is a factor in dynamic environments, so it is suitable for use in environments where longevity is an advantage.

What Are The Magnetic Properties Of NiFe70 Wire?

  1. Magnetic Permeability: NiFe70 wire has a high magnetic permeability, meaning it can easily become magnetised in the presence of an external magnetic field and demagnetise when the field is removed. This property is essential for applications in electromagnetic devices, such as transformers, inductors, and magnetic actuators.
  2. Low Coercivity: The wire has a relatively low coercivity, which means that it requires a minimal amount of magnetic field to become fully magnetised. This feature is beneficial in applications where rapid magnetisation and demagnetisation are necessary.
  3. Magnetic Saturation: NiFe70 wire can reach magnetic saturation at a relatively low magnetic field strength compared to other materials. This saturation point is where the material cannot be further magnetised, which is a critical consideration in designing electromagnetic devices.
  4. Temperature Stability: NiFe70 wire maintains its magnetic properties across a range of temperatures, making it suitable for use in environments with temperature fluctuations.
  5. Magnetic Softness: Being a soft magnetic material, NiFe70 wire can easily attain and lose its magnetisation, which is advantageous in alternating magnetic fields, such as those found in AC electromagnets and transformers.


The Crazy Wire Company is a leading UK based supplier of nichromefecral, and stainless steel wires. We specialise in rapid delivery to any location around the country. Our factory is located in Warrington, which is the historic home of the UK’s wire industry.

Check out our blog ‘Everything That You Need To Know About Wire  for more information on resistance wire in general. Our goal for our blogs and help guides is to answer as many questions as possible to help to explain the possibilities of mesh to our customers. 

We also offer similar products through our highly popular eBay store, check us out there too.

Additional information


10 Metres (33 Feet), 25 Metres (82.5 Feet), 50 Metres (166.66 Feet), 100 Metres (330 Feet), 150 Metres (495 Feet), 200 Metres (660 Feet)


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