0.08mm (40 AWG) | (FeCrAl A1) KA1 Metal Wire


The 0.08mm (40 AWG) KA1 metal wire, made of FeCrAl A1, is a versatile and durable choice for a variety of applications. Its fine gauge allows for precision in miniature electronics and detailed mechanical work, while its excellent resistance and thermal properties make it ideal for heating elements and specialised lab equipment.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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KA1 Metal Wire

The Crazy Wire Company are best known and long established as Europe’s preferred suppliers of top quality KA1 Metal wire. We have enormous stock levels at all times as we use this wire to weave our mesh products.

The KA1 metal wire, with its precise diameter of 0.08mm (40 AWG) and composition of FeCrAl A1, is a versatile and high-quality product designed for a range of applications. Known for its excellent resistance properties, this wire is ideal for use in electronic components, heating elements, and precision engineering projects. Precision is paramount when working with fine gauges of 0.08mm, especially in miniature electronics and detailed mechanical parts. The FeCrAl A1 composition contributes to the strength and durability of this unit, which ensures longevity and reliability.

For applications requiring reliable heating, such as small-scale furnaces or laboratory equipment, KA1’s thermal properties are particularly valuable. Its ability to withstand high temperatures without compromising its structure or performance is a key characteristic. Wires are used in engineering to create fine meshes and filaments, where their consistency of diameter and strength are crucial. Hobbyists can also use the wire to craft detailed models or components, from model railways to miniature sculptures, because of its flexibility and ease of handling. Electrical conductivity and oxidation resistance make it advantageous for use in low-voltage electrical circuits, sensors, and resistors.

Specification of this KA1 Metal Wire:

  • Diameter – 0.08mm (80 Micron – 40 AWG)

We also offer the KA1 grade as flat wire too if required.

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 KA1 wire. We also have a huge range of Stainless Steel and nichrome round wire in immediate stock too.

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


FAQs About This Wire

Is The KA1 Metal Wire Environmentally Friendly?

The FeCrAl A1 alloy of KA1 metal wire makes it an environmentally friendly alternative to other metal alloys. The durability and long life of the product make it environmentally beneficial since it reduces the frequency of replacement, resulting in less waste. Its recyclability, which allows it to be repurposed or recycled at the end of its life cycle, also plays a significant role in its eco-friendliness. The KA1 wire’s high resistance and thermal efficiency contribute to energy-efficient applications, especially in heating elements, resulting in lower energy costs. The lower toxicity of FeCrAl A1 alloy ensures less environmental contamination during production and disposal compared to other metals. The environment impact of mining, manufacturing, and distributing raw materials must also be considered when gauging the eco-friendliness of a product. Manufacturers with sustainable practices certifications should provide products with environmental certifications.

How Does KA1 Metal Wire Perform In Electrical Circuits?

  1. Electrical Resistance: KA1 metal wire has a higher resistance compared to many other conductive materials. This property is crucial in applications like resistors or heating elements where controlled resistance is needed to manage the flow of electrical current.
  2. Heat Tolerance: The wire’s ability to withstand high temperatures without degradation is particularly valuable in circuits that may experience significant heat during operation. This ensures reliability and longevity in such applications.
  3. Durability: FeCrAl A1 alloy is known for its strength and resistance to oxidation and corrosion. This means that the KA1 metal wire maintains its integrity over time, even in challenging environments, which is essential for the stable operation of electrical circuits.
  4. Consistency: The uniform diameter and quality of the KA1 wire ensure consistent performance in electrical applications. This consistency is vital in circuit design to ensure predictable electrical characteristics.
  5. Flexibility and Ease of Use: The wire’s flexibility makes it easier to work with in circuit assembly, allowing for intricate designs and configurations.


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


50 Metres (166.66 Feet), 100 Metres (330 Feet), 200 Metres (660 Feet)


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