X23Yu5T - 1.4765 - kanthal A-1® fechral wire

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
Kh23Yu5T 1.4765 Delivery from the stock, in stock


Fehral is an alloy of aluminum, chromium and iron, which is alloyed with manganese and silicon. In some cases wire wire is alloyed with nickel to increase plasticity. Fechral wire is an indispensable component in the manufacture of thermal elements for household appliances and industrial electric furnaces. Such wire is used in hair dryers, heat guns, convection heaters. Fechral is used in the manufacture of rheostats, resistance nodes, resistors - practically the same areas as nichrome, but due to the absence of nickel fechal wire is much cheaper and therefore more accessible to the customer. Such wire consists of the following elements: Cr (12-15%); Al (3.5-5.5%); Si (1%); Mn (about 0.7%); the remainder is Fe. This is a hard but not particularly ductile alloy, which is poorly machinable. Fechral wire has a high specific electrical resistance. The density is 7.1 - 7.3 g/cm³, the melting temperature is about 1450 °C. The maximum operating temperature is up to 1400 °C (for Kanthal). The manufacture of wire is regulated by GOST 12 766.1-90. The larger its diameter, the higher the maximum operating temperature of the heater.

Classification .

If the letter H is present in the marking - the wire is used for heating elements. If the letter C is present - the wire is used for resistance elements. TEN stands for tubular electric heaters. The wire is Ø from 0,1 mm. Its price is much lower than that of analogues, and its consumer properties are not at all worse. The relative cheapness of fehrali can be explained by the use of aluminum, rather than nickel, which is much more expensive. The price of the product depends on the thickness: the thinner the wire, the higher the cost. The brittleness of the material does not allow the use of "cold" processing methods, so we have to use more energy-intensive and expensive technologies for production. Hot-drawing, rolling and extrusion are used. Finished wire is supplied in coils or on reels.

Advantages of

Fechral wire combines two remarkable qualities: a considerable specific resistance of up to 1.3 Ohm-mm2/m and a melting point of about 1500°C. The wire practically does not lose resistance with increasing temperature, which allows it to be used in the production of high-temperature heating devices and resistance elements. It also has excellent corrosion resistance in vacuum, air, argon, sulfur-containing, carbon-containing and oxidizing environments. Fechral is lighter than similar materials, specific weight = 7.2 g/cm³, it withstands serious mechanical loads without deformation. The high yield strength allows the use of the thinnest wire diameter. Fechril wire costs about 6 times less than nichrome, which is a significant advantage in market conditions. If it were not for the considerable brittleness, which greatly complicates production, fecrals would be the ideal material. Adding nickel to it reduces the brittleness. However, this increases the cost of the final product. The price of fherrals is several times lower than that of nichrome, as already mentioned. The explanation is simple: aluminum makes the material cheaper in comparison to the expensive nickel. At the same time, the melting temperature of nichrals is higher. It is available in the form of two semi-finished products: strips and wires.


The wire is produced by drawing, rolling or pressing. Then it is coiled or wound into coils. Strip is produced by rolling or electrolysis. It is then rolled in coils. The cost of production is inversely proportional to the cross-section. This alloy is very fragile. Therefore, the manufacture of thin wires is associated with the involvement of more expensive technology. From this the price of the final product increases more than twice.

Percentage composition of X15Yu5 (Iron base) GOST 10 994-74

Се C Al Si Ni Cr Mn S Р Ti Ca
≤0,1 ≤0,08 4,5-5,5 ≤0,7 ≤0,6 14-15,5 ≤0,7 ≤0,015 ≤0,03 0,2-0,6 ≤0,1

Percentage composition of X23Yu5T (Iron base) GOST 10 994-74

Се C Al Si Ni Cr Mn S Р Ti Ca
≤0,1 ≤0,05 4,5-5,8 ≤0,5 ≤0,6 22-24 ≤0,3 ≤0,015 ≤0,03 0,2-0,5 ≤0,1


Fechral wire is widely used to convert electricity to heat, is indispensable in resistance units, vibration-resistant, compact, relatively light weight rheostats. Another important area is crane starting resistor assemblies, which are included in electric motor circuits for smoother starting. They regulate the acceleration/deceleration speed of both DC and AC motors. Fechral wire is also used for:

- Industrial firing furnace thermocouples, electric part heating dryers;

- Household electric heaters;

- Industrial water heaters.

Fechral wire is used in the production of non-precision (without special requirements to accuracy) resistors. This is due to the economic side, because the price of fuhrals is lower.

Buy at a bargain price

The company Evek GmbH has an unlimited range of heat-resistant metal products. It is characterized by the highest quality. Fehral is offered at an optimal price. If you are interested in our offer, please contact your nearest office. Term of realization of the order - minimum. The cost depends on the parameters of products and additional delivery conditions.