0.45mm (25 AWG) Hard Ni200 Resistance Wire (99.6% Nickel)


The ni200 resistance wire, measuring 0.45mm (25 AWG) and comprised of 99.6% pure nickel, is celebrated for its consistent resistive and superior conductive properties across numerous industries. Employed extensively in temperature control systems, robotics, and household appliances due to its precise thermal characteristics and stability, it is crucial for fabricating reliable sensors, managing optimal heat, and crafting durable electric components. Its applicability also extends to the creation of thermocouples, manufacturing resistors in electronic circuits, and is integral in the automotive, aerospace, and telecommunication sectors. The ni200 wire underpins diverse technological applications, providing stable, accurate, and reliable performance wherever it is employed.

Please Feel Free To Contact Our Team If You Have Any Questions At All. We Are Always Keen To Help In Any Way We Can.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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Ni200 Resistance Wire

The Crazy Wire Company are well known as suppliers of top quality Ni200 resistance wire. We have enormous stock levels at all times, as we use this wire to weave our high specification 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.

With a diameter of 0.45mm (25 AWG) and 99.6% pure nickel, Ni200 resistance wire serves a wide range of applications across various industries. NI200 resistance wire boasts superior electrical conductivity and consistently accurate resistive properties. This makes it a popular choice for the manufacture of various electronic components. With its exceptional thermal characteristics, the wire is widely used in temperature control systems. By providing stable and consistent resistance readings, it facilitates nuanced control over machinery in robotics and automation.

In household appliances such as heaters and ovens, it ensures long-term durability and optimal heat management. Because it maintains its resistance over a wide temperature range, ni200 wire is also used in thermocouples for applications such as industrial furnaces and scientific research. Automobiles operate safely and efficiently because of the reliability of sensors and electric controls. This wire is also crucial in the construction of resistors within circuits, which safeguard delicate components from overloading. A high-performance, reliable, and stable resistive element is also essential in aerospace, medical devices, and telecommunication systems.

Key product details:

  • Diameter – 0.45mm (450 Micron – 25 AWG) 
  • Ohms/m – 0.6
  • Ni+Co – Max 99.6% / Min 99.0%
    Fe – 0.4%
    C – 0.15%
    Mn – 0.35%
    Si – 0.35%
    Cu – 0.25%
    S – 0.01%Density – 8.89 g/cm3
    Melting Point – 1435 – 1446 oC

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?

Not only do we offer Ni200 wire, but we also stock huge levels of Ni60, Ni80 and Ni90.

We also offer stainless steel in ribbon and flat wire options.

The choice is virtually endless!


FAQs About This Wire

Can I Use Ni200 Resistance Wire For DIY Electronic Projects?

Ni200 resistance wire is quite suitable for DIY electronic projects due to its stable properties and versatility. Hobbyists and DIY enthusiasts often use it to create custom temperature sensors, heating elements, or other resistive devices that require accurate and reliable resistance. The dependable electrical conductivity and thermal stability of this material make it an ideal choice for applications that demand consistency and control. It is, however, essential to handle and implement this technology safely by following electrical safety norms, ensuring that wires are properly insulated or positioned to avoid short circuits or unintended heat generation. In addition, those unfamiliar with working with resistance wire may find it helpful to seek guidance from experienced electronic hobbyists and professionals before beginning any DIY project using resistance wire.

How Should I Store Unused Ni200 Resistance Wire?

Storing unused ni200 resistance wire involves safeguarding it from environmental factors and potential physical damage to preserve its quality and longevity. Keep the wire in a cool, dry place to avoid any corrosion or degradation that could arise from exposure to moisture. It’s also advisable to store it in its original packaging or a suitable container that prevents it from becoming kinked, bent, or otherwise physically damaged. If available, include a silica gel packet or another desiccant in the storage box to protect against accidental moisture exposure.

Additionally, ensure that the wire is stored in a place where it won’t be exposed to abrasive materials or chemicals that could compromise its surface integrity. For ease of identification, keeping a label on the container, especially if you use various types of wire, will facilitate quick and accurate retrieval for future projects. Finally, ensure it’s kept in a secure area away from the reach of children or pets to prevent accidental injury or ingestion.

Can Ni200 Resistance Wire Be Used In High-Humidity Environments?

Ni200 resistance wire can be used in high-humidity environments, but considerations regarding its corrosion resistance and performance stability should be noted. Nickel, in general, offers decent resistance to oxidation and corrosion, but its performance might be affected by consistent exposure to high-humidity conditions over prolonged periods. Especially in environments where the humidity is coupled with the presence of corrosive agents, the wire may experience accelerated wear or subtle alterations in its resistive properties.

For applications in high-humidity environments, it’s imperative to ensure that the ni200 wire is adequately insulated or protected, minimising direct exposure to the ambient conditions. If the application involves continual exposure to moisture or corrosive environments, periodic checks and potentially more frequent replacements might be prudent to maintain optimal performance and safety. Additionally, for critical applications, consulting with a materials specialist or an engineer might provide insights into managing the longevity and reliability of ni200 resistance wire in humid conditions.



The Crazy Wire Company is a leading UK based supplier of nichrome, FeCrAl, 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 ‘What You Need To Know About: Stainless Steel Wires’   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.

Contact our team today if you have any questions at all. We are always really keen to help in any way that we can.

Additional information


10 Metres (33 Feet), 25 Metres (82.5 Feet), 50 Metres (166.66 Feet)


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