0.44mm (25 AWG) Nichrome Ni90 Resistance Wire


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Nichrome Ni90 Heat Treatment Wire

The Crazy Wire Company are well known as suppliers of top quality Nichrome Ni90 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.

The 0.44mm (25 AWG) nichrome ni90 resistance wire is a high-quality product designed for a range of applications requiring efficient heating and electrical resistance. Ni90, an alloy composed primarily of nickel (90%) and chromium (10%), is known for its stability, making it a good choice for a variety of applications. As a notable feature of this wire, it is heat resistant. Unlike other materials, nichrome ni90 does not easily oxidize, ensuring a longer lifespan.

In certain industrial processes and specialty ovens, its resistance properties also make it an ideal material. Electronics also utilise it for its consistent resistance values. In addition to its exceptional mechanical properties, nichrome ni90 can also be found in small appliances such as toasters, hairdryers, and kilns. Fast heating coupled with resistance to high temperatures ensure efficient operation. Additionally, it can be used for art installations and crafting. It has a good balance of flexibility and strength, making it easy to work with while still being robust enough for most applications.

Key product details:

  • Diameter – 0.44mm (440 Micron – 25 AWG) 
  • Ohms/m – 5.48
  • Technical Specification:
  • Ni – Rest
  • Cr – 10.0 
  • Fe – <1.0
  • Magnetic Properties – Nonmagnetic
  • Electrical resistance is high
  • Corrosion resistance is high

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 Ni90 round 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

Is There Any Maintenance Required For Nichrome Ni90 Wire?

No, nichrome ni90 wire generally requires minimal maintenance due to its inherent properties. The alloy, consisting of 90% nickel and 10% chromium, is designed to resist oxidation and corrosion even at high temperatures. This makes it durable and long-lasting under typical operating conditions. However, it’s advisable to:

  1. Keep it Clean: If the wire becomes dirty or has residues, gently clean it with a soft cloth or brush to ensure optimal performance.
  2. Store Properly: When not in use, store the wire in a cool, dry place away from corrosive substances or environments.
  3. Regularly Inspect: For applications involving continuous use, periodic inspections for signs of wear, thinning, or any breaks in the wire are beneficial.

Remember, while nichrome ni90 is robust and durable, ensuring it is used within its specified temperature and current limits will prolong its lifespan. Always refer to the manufacturer’s guidelines for specific care and usage recommendations.

Is Nichrome Ni90 Wire Flexible Enough For Detailed Work?

Yes, nichrome ni90 wire is flexible enough for detailed work. In particular, 0.44mm (25 AWG) diameter strikes a balance between malleability and strength. The material keeps its structural integrity or strength under varying conditions, but also allows for fine bending or shaping, which makes it ideal for intricate applications. Whether used in precision electrical setups, art installations, or crafting applications, nichrome ni90 provides the right level of adaptability. The material’s resilience makes it capable of maintaining its form once it has been shaped, which ensures consistent performance. It is, however, imperative to handle wires with care during detailed work to avoid unnecessary stresses or damage, ensuring the wire’s longevity and performance.

Are There Specific Tools Recommended For Working With Nichrome Ni90?

  1. Wire Cutters: Use a high-quality wire cutter that can give a clean cut without fraying the nichrome ni90 wire.
  2. Wire Strippers: If you need to strip the ends, ensure you have a wire stripper that doesn’t damage the wire’s integrity.
  3. Needle Nose Pliers: These are useful for bending and shaping the wire, especially for intricate work.
  4. Ceramic Tweezers: Unlike metal tweezers, ceramic tweezers are non-conductive, making them safer to use when adjusting heated nichrome wire.
  5. Ohmmeter: If you’re working on applications where the resistance needs to be precise, an ohmmeter is essential to measure the resistance of your nichrome ni90 setup.
  6. Heat-Resistant Mat: A silicone or heat-resistant mat can be used as a workspace to prevent any damage to surfaces when heating the wire.
  7. Safety Gear: Always wear safety goggles and gloves to protect yourself from any wire snap-back or potential burns when heating.
  8. Torch or Lighter: For annealing or tempering the wire if required.
  9. Coiling Tools: If you’re making coils or similar structures, specialised coiling tools can make the process easier and more consistent.

What Are The Mechanical Properties Of Nichrome Ni90 Wire?

Nichrome ni90 wire, composed of 90% nickel and 10% chromium, is renowned for its distinct mechanical properties. It boasts high tensile strength, allowing it to endure significant stress without breaking, which is complemented by its ductility, enabling it to be shaped or coiled without easily snapping. One of its standout features is its resistance to oxidation and corrosion, primarily due to its chromium content. This ensures the wire’s durability and reliability, especially when subjected to repeated heating cycles. Moreover, its thermal stability ensures that the wire maintains its shape and properties even at elevated temperatures. Coupled with a smooth surface finish and a notable degree of hardness, nichrome ni90 wire becomes an ideal choice for diverse applications, from household appliances to intricate crafting and electronic projects.


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.

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), 20 Metres (66 Feet), 50 Metres (166.66 Feet)


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