Fechral.

Fehr - the alloy is used in the same areas as nichrome, but due to the lack of nickel in its basis - cheaper. Fehral can withstand fewer heating cyclesfehral - the alloy is used in the same areas as nichrome, but due to the lack of nickel in its basis - cheaper. Fehral withstands fewer heating cycles, although the maximum operating temperatures are higher than those of nichromes and reach 1400 degrees Celsius. At the moment, the fehral brand X23Y5T has ousted other brands from production, such as X15Yu5, X27Yu5T and X23Yu5. At the same price, fehral X23Y5T surpasses them in terms of heat resistance and heat resistance.

Fehr X23Y5T contains 22-24% chromium (Cr) and only up to 0.6% nickel (Ni). It's an iron-chromoaluminum alloy. The absence of nickel in large quantities makes fehral a cheaper material compared to nichrome. However, fehral is less technological - it is impossible to make thin wire. These two alloys are quite similar and have the same application.

The most valuable physical properties of nichromes X20N80 and X15N60 and fehral X23Y5T are high electrical resistance, low temperature coefficient of electrical resistance, high corrosion resistance in various media and high heat resistance. 

February X23YU5T can work at temperatures - up to 1400 ° C, depending on the diameter of the wire (according to GOST 12766.1-90). 

The larger the diameter of the nichrome wire or fehral of the wire from which the heater is made, the higher its maximum operating temperature.
Subduction of fehral X23Y5T (fencer wire) is more heat resistant than products of nichrome X15N60 and X20N80 (nichrome wire, thread, tape, nichrome strip). The above properties of these precision alloys determine the areas of their application. 

Maximum operating temperatures of alloys nichrome and fehral

• Nichrome X20N80 to 1200 degrees Celsius. 
• Nichrome X15H60 to 1125 degrees Celsius.
• Nichrome XN20YUS to 1100 degrees Celsius. 
• Nichrome XN70U to 1200 degrees Celsius. 
• February X23YU5T to 1400 degrees Celsius

Specific resistance of nichrome and fehral

• Wire nichrome more than 3 mm brand X20N80 - 1.12 ohm * mm / m. 
• Wire nichrome more than 3 mm brand X15N60 - 1.13 ohm * mm / m. 
• Wire nichrome more than 3 mm brand XN20US - 1.02 ohm * mm / m.
• Wire nichrome more than 3 mm brand XN70Y - 1.30 ohm * mm / m. 
• Fencer wire more than 3 mm brand X23Y5T - 1.39 ohm * mm / m. 

Thus, most often nichrome and fehral are used for the manufacture of electric heating elements of furnaces for all industries, household appliances and heat devices. 

Since nichrome and fehral are mainly used for the manufacture of heating elements, the most common products are nichrome wire (thread), nichrome tape and nichrome band X20N80 and X15N60, ferry wire X23Y5T.