0.25mm (30 AWG) KA1 FeCrAl Alloy Wire


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KA1 FeCrAl Alloy Wire

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

Technical Specification:

  • Diameter – 0.25mm (250 Micron – 30 AWG)
  • Ohms/ft – 29.29
  • 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

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 The Resistivity Of FeCrAl?

The resistivity of FeCrAl, also known as Iron-Chromium-Aluminium alloy, can vary depending on the specific composition and processing of the alloy. However, FeCrAl alloys are typically known for their high electrical resistance and low temperature coefficient of resistance.

As an example, one commonly used FeCrAl alloy is KA1, which has a resistivity of approximately 1.45 μΩ·m (microohm-meter) at room temperature. This high resistivity makes FeCrAl alloys useful in applications where electrical heating is required, such as in heating elements for industrial furnaces, appliances, and electric ovens.

It’s worth noting that the resistivity of FeCrAl may change with temperature and time, and other factors such as oxidation and deformation can also affect its electrical properties.

What Is The Yield Strength Of FeCrAl?

The yield strength of FeCrAl, also known as Iron-Chromium-Aluminium alloy, can vary depending on the specific composition and processing of the alloy. However, FeCrAl alloys are typically known for their high strength, high-temperature stability, and excellent resistance to oxidation and corrosion.

As an example, one commonly used FeCrAl alloy is KA1, which has a typical yield strength of around 500 MPa (megapascals) at room temperature. This high strength and stability make FeCrAl alloys useful in high-temperature applications, such as heating elements for industrial furnaces and electrical heating devices.

KA1 vs Nichrome?

KA1 and Nichrome are both commonly used types of heating wire alloys, but they have some differences in terms of their composition and properties.

KA1, also known as FeCrAl (Iron-Chromium-Aluminium), is an alloy of iron, chromium, and aluminium. It has a high melting point, excellent oxidation resistance, and high electrical resistance, making it well-suited for use in high-temperature applications such as heating elements for furnaces, ovens, and other heating devices. KA1 has a lower nickel content compared to Nichrome, which makes it less expensive and potentially less harmful to health for some users. It typically has a slightly higher resistance than Nichrome.

Nichrome, on the other hand, is a family of alloys made from nickel, chromium, and sometimes other metals such as iron. It has a high melting point and excellent resistance to oxidation and corrosion. Nichrome is widely used in heating elements for many different applications, including household appliances, industrial heating devices, and electric cigarettes. Nichrome has a higher nickel content than KA1, which can make it more expensive and less suitable for some users due to potential health concerns associated with nickel.

What Metal Wire Does Not Rust?

There are several types of metal wires that are known for their resistance to rusting. Here are a few:

  1. Stainless Steel Wire: Stainless steel is a type of steel alloy that contains at least 10.5% chromium, which gives it excellent corrosion resistance. Stainless steel wires are commonly used in outdoor applications, marine environments, and medical equipment.
  2. Aluminium Wire: Aluminium is a non-ferrous metal that is lightweight and has a natural resistance to corrosion. Aluminum wires are often used in electrical applications, such as wiring for overhead power lines.
  3. Copper Wire: Copper is another non-ferrous metal that is known for its excellent conductivity and resistance to corrosion. Copper wires are commonly used in electrical applications and for jewelry making.
  4. Galvanised Steel Wire: Galvanised steel wire is coated with a layer of zinc, which helps to protect it from rust and corrosion. This type of wire is commonly used in construction and fencing applications.



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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