KA1 (FeCrAl A1) Round Wire | 0.2mm (32 AWG) 319g Spool


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KA1 (FeCrAl A1) Round Wire

The Crazy Wire Company are best known and long established as Europe’s preferred suppliers of top quality KA1 (FeCrAl A1) round wire. We have enormous stock levels at all times as we use this wire to weave our mesh products.

0.2mm KA1 wire is a thin wire used for resistance heating applications. Its small diameter makes it suitable for use in high-temperature heating elements with tight spaces or precise temperature control requirements. The use of this thin wire can result in faster heating and cooling times compared to thicker wire, which can be beneficial for applications that require precise temperature control or fast temperature changes.

However, because of its small diameter, 0.2mm KA1 wire may have a lower resistance than thicker wire, which can result in higher current densities and potentially faster degradation. It’s important to use caution when working with thin wires, as they can be more prone to breakage or damage during handling and installation. Additionally, it’s important to consider the electrical properties of the wire, such as its resistance and maximum operating temperature, to ensure it is suitable for the specific application.

Key product details:

  • C = Min – 0% Max – 0.08%
  • Si = Min – 0% Max – 0.7%
  • Mn = Min – 0% Max – 0.4%
  • Cr = Min – 20.5% Max – 23.5%
  • Al = Nominal Comp – 5.8% – Min – 0% – Max – 0%
  • Fe = Balance
  • Diameter – 0.2mm (200 Micron – 32 AWG)
  • Ohms/ft – 46.11
  • Spool Size –319g (Approx. 1000 Metres)

Available KA1 Options:

  • 1.15mm (17 AWG) – 1.35 ohms/m
  • 1.02mm (18 AWG) – 1.77 ohms/m
  • 0.9mm (19 AWG) – 2.15 ohms/m
  • 0.8mm (20 AWG) – 2.84 ohms/m
  • 0.7mm (21 AWG) – 3.58 ohms/m
  • 0.6mm (22 AWG) – 4.94 ohms/m
  • 0.65mm (22 AWG) – 4.26 ohms/m
  • 0.64mm (22 AWG)
  • 0.5mm (24 AWG) – 7.11 ohms/m
  • 0.55mm x 0.1mm – 26.05 ohms/m
  • 0.55mm (23 AWG) – 5.96 ohms/m
  • 0.4mm (26 AWG) – 11.46 ohms/m
  • 0.48mm (25 AWG) – 7.79 ohms/m
  • 0.45mm (25 AWG) – 8.93 ohms/m
  • 0.42mm (26 AWG) – 10.6 ohms/m
  • 0.3mm (29 AWG) -19.89 ohms/m
  • 0.38mm (27 AWG) – 12.79 ohms/m
  • 0.37mm (27 AWG) – 13.26 ohms/m
  • 0.35mm (27 AWG) – 14.69 ohms/m
  • 0.34mm (28 AWG) -15.15 ohms/m
  • 0.32mm (28 AWG) -17.46 ohms/m
  • 0.2mm (32 AWG) – 46.11 ohms/m
  • 0.28mm (30 AWG) – 22.75 ohms/m
  • 0.27mm (30 AWG) – 24.86 ohms/m
  • 0.25mm (30 AWG) – 29.29 ohms/m
  • 0.23mm (31 AWG) – 34.36 ohms/m
  • 0.21mm (32 AWG) – 40.44 ohms/m
  • 0.1mm x 0.2mm – 71.83 ohms/m
  • 0.1mm (38 AWG)
  • 0.18mm (33 AWG) – 56.98 ohms/m
  • 0.17mm (34 AWG) – 62.57 ohms/m
  • 0.15mm (34 AWG) – 82.52 ohms/m
  • 0.13mm (36 AWG) – 107.87 Ohms/m
  • 0.12mm (36 AWG)
  • 0.09mm (39 AWG) – 228.40 ohms/m
  • 0.08mm (40 AWG)
  • 0.07mm (41 AWG)
  • 0.06mm (42 AWG) – 496 ohms/m
  • 0.05mm (44 AWG) – 577 ohms/m

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 round wire. We also have a huge range of stainless steel wire and Ni80 round wire in immediate stock too.

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


FAQs About This Wire

What Is KA1 Wire Made Of?

KA1 wire is made of an iron-chromium-aluminium (FeCrAl) alloy. The exact composition of the alloy can vary slightly depending on the manufacturer, but typically it contains iron (Fe), chromium (Cr), and aluminium (Al) as the main components. The addition of chromium and aluminium provides excellent resistance to high-temperature oxidation and corrosion, making it ideal for use in high-temperature heating elements.

The FeCrAl alloys used in KA1 wire have a high electrical resistance, which makes them well suited for use as resistance heating elements. The combination of good resistance stability, high mechanical strength, and resistance to high-temperature corrosion makes KA1 wire a popular choice for a wide range of high-temperature heating applications, including electric heating elements in industrial furnaces, home appliances, and resistance heating elements for vaporizing electronic cigarettes.

Is KA1 Magnetic?

Yes, KA1 wire is magnetic. The FeCrAl alloys used in KA1 wire contain iron (Fe), which is a magnetic material. This means that KA1 wire will be attracted to a magnetic field, and will produce a magnetic field of its own when an electric current is passed through it.

The magnetic properties of KA1 wire are not typically relevant for most of its applications, as it is primarily used as a resistance heating element and not for its magnetic properties. However, in some specialized applications, the magnetic properties of KA1 wire may be a consideration, and it’s important to take them into account when designing heating elements or other devices that use KA1 wire.

Is It A Stainless Steel?

No, KA1 is not a type of stainless steel. KA1 iron-chromium-aluminum (FeCrAl) alloys used for resistance heating elements. The FeCrAl alloys used in KA1 wire have high electrical resistance, good resistance stability, and high mechanical strength, making them well suited for use in high-temperature heating applications.

Stainless steel, on the other hand, is a type of steel that contains at least 10.5% chromium, which provides resistance to corrosion and staining. There are many different types of stainless steel, each with its own specific properties and applications, but none of them are the same as KA1. While KA1 wire and stainless steel both contain chromium, the alloys used in KA1wire have a different composition and set of properties than those used in stainless steel.

Can KA1 Rust?

KA1 wire is resistant to rust, but it is not completely immune to corrosion. The FeCrAl alloys used in KA1 wire contain chromium, which provides excellent resistance to high-temperature oxidation and corrosion. This makes it suitable for use in high-temperature heating applications where it is exposed to high temperatures and potentially corrosive environments.

However, it’s important to note that no material is completely immune to corrosion, and the resistance of KA1 wire to rust and corrosion will depend on a number of factors, including the specific conditions it is exposed to, such as temperature, humidity, and the presence of corrosive chemicals or gases. To maximize the resistance of KA1 wire to rust and corrosion, it’s important to store and use it properly and to follow the manufacturer’s recommendations for its use and maintenance.



The Crazy Wire Company is a leading UK based supplier of nichrome, FeCrAl, 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 wires’   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.