0.32mm (28 AWG) KA1 FeCrAl A1 Electrical Wire


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FeCrAl A1 Electrical Wire

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

0.32mm FeCrAl A1 wire is a type of electrical wire made of an iron-chromium-aluminum alloy. The wire has a diameter of 0.32mm and is commonly used in applications that require high electrical resistance and high-temperature resistance. FeCrAl A1 wire is known for its excellent oxidation resistance, which makes it suitable for use in high-temperature environments. The wire is also easy to work with and can be easily shaped and bent into different configurations. FeCrAl A1 wire is commonly used in various electrical applications, including heating elements, resistors, and other high-temperature applications.

The wire is also used in the manufacturing of electrical coils, heating elements, and other electrical components that require high-temperature and high-corrosion resistance.

Technical Specification:

  • Diameter – 0.32mm (320 Micron – 28 AWG)
  • Ohms/ft – 17.46
  • 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

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

Can KA1 Wire Be Used In Tube Heater?

Yes, KA1 wire can be used in tube heaters. Tube heaters are often used for industrial or commercial heating applications, and they require a heating element that can withstand high temperatures and provide efficient heat transfer. KA1 wire is a type of high-temperature resistant wire that is commonly used in heating applications, including tube heaters. KA1 wire is often used in tube heaters because it has high-temperature resistance, good mechanical strength, and excellent corrosion resistance. However, the specific design and material requirements for a tube heater will depend on the specific application, so it’s important to consult the manufacturer’s guidelines and specifications to ensure the appropriate materials are used.

Which Wire Works Best For Tube Heater?

The choice of wire for a tube heater will depend on various factors such as the operating temperature, the power requirements of the heater, and the specific application. However, KA1 wire is a popular choice for tube heaters because it has high-temperature resistance, good mechanical strength, and excellent corrosion resistance. Other materials that can be used for tube heater elements include nickel-chromium (NiCr) and iron-chromium-Aluminium (FeCrAl) alloys, which also have high-temperature resistance and good mechanical strength. The specific choice of wire and element design will depend on the specific application requirements, and it is important to consult the manufacturer’s guidelines and specifications to ensure that the appropriate materials and element design are used for the specific application. In addition to the wire, tube heaters can also use other materials such as ceramics or quartz to support and protect the wire element, as well as enhance the heat transfer efficiency.

How To Know If My Heating Element Is Bad?

There are several signs that your heating element may be bad or malfunctioning, including:

1. Lack of heat: If your heating element is not generating any heat or is not getting as hot as it should, this could be a sign that it is not working properly.
2. Uneven heating: If your heating element is producing heat, but is heating unevenly or leaving cold spots, this could indicate a problem with the element or with the way it is installed.
3. Overheating or burning: If your heating element is getting too hot or is burning, this could be a sign that it is short-circuiting or that it is drawing too much current.
4. Strange noises: If your heating element is making unusual noises or sounds, such as hissing or popping, this could indicate a problem with the element or with the device it is installed in.
5. Malfunctioning thermostat: If your heating element is not turning off when it should, or if it is turning on and off frequently, this could be a sign that the thermostat is not working properly and may need to be replaced.

If you suspect that your heating element is not working properly, it is important to have it inspected and repaired by a qualified professional. Attempting to repair or replace a heating element without the proper knowledge or equipment can be dangerous and may cause further damage to the device or to your home’s electrical system.

How Do I Calculate The Amperage In A Heating Coil?

To calculate the amperage in a heating coil, you need to know the voltage and resistance of the coil. The formula for calculating amperage is:

Amperage (A) = Voltage (V) / Resistance (R)

Here’s how to calculate the amperage in a heating coil:

1. Measure the voltage across the heating coil using a multimeter. Make sure the multimeter is set to measure voltage and is connected in parallel to the heating coil.
2. Measure the resistance of the heating coil using a multimeter. Make sure the multimeter is set to measure resistance and is connected in series to the heating coil.
3. Use the formula above to calculate the amperage. Divide the voltage by the resistance to get the amperage.
For example, let’s say you measured a voltage of 120 volts across a heating coil with a resistance of 12 ohms. To calculate the amperage, you would divide the voltage by the resistance:

Amperage (A) = 120 V / 12 Ω = 10 A

So the amperage in this heating coil is 10 amps.



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. 

Additional information


10 Metres (33 Feet), 100 Metres (330 Feet), 200 Metres (660 Feet), 25 Metres (82.5 Feet), 50 Metres (166.66 Feet)


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