0.1mm (38 AWG) KA1 Resistance Wire FeCrAl


The 0.1mm (38 AWG) KA1 Resistance Wire FeCrAl is an exceptionally durable and versatile wire, ideal for high-temperature applications. Made from a FeCrAl alloy, it offers excellent resistance to oxidation and stable performance under heat, making it suitable for heating elements, electric furnaces, and resistor components in various devices.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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Resistance Wire FeCrAl

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

The 0.1mm (38 AWG) KA1 Resistance Wire FeCrAl is a high-quality, versatile material specifically designed for various applications in electrical and thermal projects. This resistance wire is made of iron, chromium, and aluminum (FeCrAl), making it perfect for high-temperature environments such as heating elements and electric furnaces. Its 0.1mm thickness ensures precise control and uniform heating, which are essential in applications requiring consistency. Its resistance properties permit its use as a resistor component, which regulates and manages electrical currents in various electronic devices.

In environments where the wire is exposed to high temperatures for extended periods of time, the FeCrAl composition ensures long-term reliability and resistance to oxidation. As a result of this feature, it is a popular choice for kilns, toasters, and hair dryers in industrial settings. Additionally, as a result of its flexibility and strength, it is easy to handle and shape, making it a convenient material for custom designs.

Specification of this FeCrAl Round Wire:

  • Diameter – 0.1mm (100 Micron – 38 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

What Are Some Common Applications Of Resistance Wire FeCrAl?

  1. Heating Elements: It’s widely used in industrial and domestic heating elements due to its high-temperature resistance and stability. Common examples include electric heaters, toasters, and hair dryers.
  2. Electric Furnaces: In industrial settings, this wire is used in electric furnace elements because it can withstand extreme temperatures without degrading.
  3. Resistor Components: The wire’s consistent resistance properties make it suitable for use in resistor components in electronic circuits, helping in the regulation of electrical current.
  4. Laboratory Equipment: Its precision and reliability make it a good choice for heating elements in various laboratory apparatus.
  5. Automotive Applications: It’s used in automotive electrical systems, particularly in components that require a stable resistance under varying temperatures.
  6. Kilns and Ovens: In ceramics and metalworking industries, the wire is used in kilns and ovens due to its ability to withstand high temperatures and its longevity.
  7. Household Appliances: Many common household appliances, such as electric ovens and hair styling tools, use this type of wire for heating elements.

How Does Resistance Wire FeCrAl Handle Oxidation?

This FeCrAl resistance wire consists of an iron-chromium-aluminum alloy and exhibits exceptional oxidation resistance, especially at elevated temperatures, which contributes to its durability and performance. Its resistance to oxidation is primarily attributed to the formation of a protective alumina layer on its surface when heated, effectively shielding the core material from further oxidation. A chromium oxide layer forming from the chromium in the alloy adds another layer of protection to this alloy’s resistance.

Especially in high-temperature environments, this characteristic contributes to the wire’s structural integrity and resistance, reducing its oxidation rate. The FeCrAl wire also has reduced scaling properties compared to other materials. This is so it can maintain its performance over a longer period of time with less maintenance. As a result of these characteristics, resistance wire FeCrAl is an ideal choice for applications that require prolonged exposure to high temperatures, such as industrial heating elements, electric furnaces, and a variety of automotive components.


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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