0.25mm (30 AWG) Nichrome 90 Round Wire


The 0.25mm (30 AWG) nichrome 90 round wire is a corrosion-resistant alloy ideal for precise electronic components. With its superior heat resistance, it’s perfect for industrial heating elements and electronic resistors. Its durability and consistent performance make it versatile for a range of applications.

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Nichrome 90 Round Wire

The Crazy Wire Company is best know as suppliers of top-quality Nichrome 90 round wire. We have enormous stock levels at all times, as we use this wire to weave our specialist-grade 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 0.25mm (30 AWG) nichrome 90 round wire is a durable alloy primarily made of nickel and chromium, known for its strong resistance to oxidation and corrosion. The fine 0.25mm gauge of this cable offers precision, making it a perfect choice for intricate electronic components. It is commonly used in industrial heating elements such as furnaces and electric heaters. This is because of its excellent heat resistance. Ni90 wire has stable resistance properties therefore it is also suitable for electronic resistors and outdoor applications. Nichrome 90 round wire’s durability and consistency make it a versatile choice for multiple applications.

Key product details:

  • Diameter – 0.25mm (250 Micron – 30 AWG) 
  • Ohms/m – 13.86
  • 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

How Resistant Is Nichrome 90 Round Wire to UV Exposure?

Nichrome 90 round wire is mainly composed of nickel and chromium. These elements inherently protect the alloy from oxidation and corrosion under many environmental conditions. It is not the alloy composition of nichrome that gives it its UV (ultraviolet) resistance, but rather its non-reactivity to UV light that accounts for its resistance.

Although prolonged UV exposure may negatively affect the physical appearance or surface quality of many materials, nichrome 90 round wire’s electrical conductivity and heat resistance would not be affected by UV rays to a great extent. For critical applications, it’s always advisable to consult specific product data or conduct tests if the wire will be exposed to direct UV light for extended periods.

Is Nichrome 90 Round Wire Magnetic?

Nichrome 90 round wire, composed predominantly of nickel and chromium, is generally considered non-magnetic. Its unique alloy composition ensures that it does not exhibit the magnetic properties commonly found in certain other metals, such as pure iron. As a result, nichrome 90 does not attract or repel other materials under the influence of a magnetic field, making it suitable for applications where magnetic interference could be problematic. It’s this non-magnetic characteristic, combined with its exceptional heat and oxidation resistance, that makes nichrome 90 a preferred choice for various specialised industrial and electronic applications.

Can Nichrome 90 Round Wire Be Soldered?

Nichrome 90 round wire can be challenging to solder due to its high chromium content, which forms a protective oxide layer on the surface. This oxide layer prevents typical solder from wetting and adhering to the wire effectively. However, with the right preparation and materials, it is possible to solder nichrome wire:

  1. Surface Preparation: Before soldering, the oxide layer on the nichrome wire needs to be removed. This can be done by mechanically abrading the surface with fine sandpaper or steel wool.
  2. Flux: Using an aggressive flux specifically designed for difficult-to-solder metals can assist in breaking down the oxide layer and promoting solder flow.
  3. High-Temperature Solder: Due to nichrome’s inherent heat resistance, a high-temperature solder, often containing silver, might be more effective.
  4. Tinning: It can be helpful to first “tin” the wire by applying a small amount of solder to the cleaned area of the wire before making the final solder connection.
  5. Quick Work: Overheating can cause the protective oxide layer to reform quickly. Thus, it’s essential to work quickly once the wire is prepped and tinned.

Even with these methods, soldering nichrome wire requires skill and experience. For critical applications or where a reliable connection is paramount, alternative methods such as spot welding or crimping might be preferred over soldering.

How Do I Cut or Shape Nichrome 90 Round Wire?

Cutting and shaping nichrome 90 round wire is straightforward, but because of its durability, certain tools and techniques are more effective:

  1. Cutting:
    • Wire Cutters/Shears: For thinner gauges of nichrome 90 wire, like the 0.25mm (30 AWG), a standard set of wire cutters should suffice.
    • Heavy-Duty Cutters: For thicker gauges, more robust cutters might be needed to get a clean cut.
    • Dremel or Cutting Wheel: For precision cuts or bulk processing, a Dremel tool or cutting wheel can be useful, but always ensure you’re wearing protective eyewear to shield from flying wire fragments.
  2. Shaping:
    • Pliers: Use needle-nose or round-nose pliers to create bends and curves. They can help manipulate the wire into desired shapes with precision.
    • Mandrels or Forming Tools: These are cylindrical objects around which the wire can be wrapped to produce coils or other consistent shapes.
    • Hammering: For flattening or texturing, you can gently hammer the wire on a metal block or anvil. Be cautious to avoid over-hammering, which can weaken the wire.
  3. Annealing (For Easier Shaping):
    • If the wire becomes too stiff or work-hardened from excessive shaping, you can anneal it to restore some of its flexibility. To do this, heat the wire until it glows and then let it cool naturally. This process makes it more malleable and easier to shape.
  4. Safety Precautions:
    • Wear Protective Eyewear: Always wear safety glasses to protect your eyes from any flying wire fragments or debris.
    • Work in a Well-Ventilated Area: When annealing, make sure you’re in a well-ventilated space to avoid inhaling any fumes.
    • Use Gloves: Wearing gloves can prevent potential cuts and offer a better grip on the wire.


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), 100 Metres (330 Feet), 200 Metres (660 Feet)


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