KA1 Type (FeCrAl A1) Resistance Flat Wire | 10 Metre Length


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KA1 Type (FeCrAl A1) Resistance Flat Wire

The Crazy Wire Company presents its KA1 Type (FeCrAl A1) Resistance Flat Wire, a dependable solution tailored for a variety of applications where consistent heat and electrical resistance are required. This Resistance Flat Wire is manufactured in a flat profile to enhance its surface area, making it ideal for applications needing uniform heat distribution.

Our Resistance Flat Wire comes in a selection of gauges, including 19 AWG (1.15 x 0.56mm), 20 AWG (1.03 x 0.5mm), 21 AWG (0.91 x 0.45mm), 22 AWG (0.81 x 0.4mm), and 25 AWG (0.68 x 0.27mm), to accommodate different requirements and uses. The flat wire structure offers a unique combination of flexibility and strength, allowing for easy manipulation without compromising the wire’s integrity.

KA1 Type (FeCrAl A1) alloy is recognized for its high resistivity and exceptional oxidation resistance at elevated temperatures, which makes it a preferred material for heating elements, electronic cigarette coils, and DIY projects that demand a steady performance over time. Its flat shape provides an increased contact area, which is especially beneficial in applications like precision heating where efficient and even thermal transfer is critical.

Each spool provides a generous length of wire, giving users the freedom to cut and shape the wire according to their project’s needs. With its robustness and durability, this Resistance Flat Wire maintains performance in various environments, making it a reliable choice for both indoor and outdoor use.

The Crazy Wire Company takes pride in supplying a product that merges practicality with professional-grade materials. Whether for personal projects, educational settings, or industrial applications, our KA1 Type (FeCrAl A1) Resistance Flat Wire is an exemplary choice for users who require a straightforward, effective material that delivers consistency and quality.

Available Options:

  • 19 AWG: 1.15 x 0.56mm
  • 20 AWG: 1.03 x 0.5mm
  • 21 AWG: 0.91 x 0.45mm
  • 22 AWG: 0.81 x 0.4mm
  • 25 AWG: 0.68 x 0.27mm

* The spools in this listing are all 10 Metres (33ft) in length.

We also offer the SS316L grade as round 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 SS316L wire. We also have a huge range of KA1and nichrome round wire in immediate stock too.

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


FAQs About This Wire

Is KA1 Flat Wire Suitable For High-Temperature Applications?

KA1 flat wire, made of FeCrAl A1, is highly suitable for high-temperature applications. Despite its excellent resistance to corrosion and oxidation, it is ideal for use in heating elements, kilns, and other thermal processing equipment. Due to its composition, the alloy retains its structural integrity and resistive properties even when subjected to intense heat, making it an excellent choice for projects requiring consistent heat.

What Are The Benefits Of Using Flat Wire Over Round Wire?

For certain applications, flat wire has several advantages over round wire. This increased surface area allows for better heat distribution and more efficient electrical contact points. It can result in improved performance in heating and electrical applications, such as more uniform heat generation in heating elements. Furthermore, flat wire can be stacked or wound tightly in applications with limited space. Because of its shape, flat wire can also provide enhanced mechanical stability and can be easier to install and position.

Can KA1 Flat Wire Be Used In Electrical Repairs?

KA1 flat wire can indeed be used for certain types of electrical repairs, particularly when high heat resistance and stability are required. Flat profiles make it easier to contact flat surfaces and may be preferred in applications with limited space. However, it’s important to make sure the wire’s specifications, such as its resistance and current-carrying capacity, match the requirements of the electrical system being repaired. If you are unsure about the compatibility of the wire with your repair needs, always consult a professional.




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 Wirefor 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

Flat Wire Size

19 AWG: 1.15 x 0.56mm, 20 AWG: 1.03 x 0.5mm, 21 AWG: 0.91 x 0.45mm, 22 AWG: 0.81 x 0.4mm, 25 AWG: 0.68 x 0.27mm