China FeCrAl 0Cr21Al6Nb Resistance Heating Wire for Industrial Furnace Heating Elements Manufacture and Factory

FeCrAl 0Cr21Al6Nb Resistance Heating Wire for Industrial Furnace Heating Elements

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Product Description

FeCrAl 0Cr21Al6Nb Resistance Heating Wire is a high-performance iron chromium aluminum alloy designed for industrial electric heating applications requiring excellent oxidation resistance and long-term operation at elevated temperatures.

The alloy contains chromium, aluminum and niobium elements, forming a protective alumina layer during high-temperature operation. This oxide layer improves oxidation resistance and extends the service life of heating elements.

With stable electrical resistance and excellent heat resistance, 0Cr21Al6Nb FeCrAl wire is widely used for manufacturing industrial furnace heating elements, electric heaters, kilns and thermal processing equipment.

Nominal Analysis

21.00 Cr, 6.00 Al, Bal. Fe

Max contineous working temperature: 1350ºC.

Melting Temperature: 1500ºC

Electric Resistivity: 1.45 micro ohm/m

Has been used extensively as heating elements in industrial furnaces and electrical kilns.

Has less hot strength than Tophet alloys but much higher melting point.

	Main Element
ALLOYS	Ni	Cr	Fe	Resisivity 20°C (Ω mm2/m)	Density (g/cm3)		Max.°C Temperature	Melting Point°C
NiCr Alloy
NiCr 80/20	Bal.	20.0~23.0	≤1.0	1.09	8.4		1200	1400
NiCr 70/30	Bal.	28.0~31.0	≤1.0	1.18	8.1		1250	1380
NiCr 60/15	55.0~61.0	15.0~18.0	Bal.	1.12	8.2		1150	1390
NiCr 35/20	34.0~37.0	18.0~21.0	Bal.	1.04	7.9		1100	1390
NiCr 30/20	30.0~34.0	18.0~21.0	Bal.	1.04	7.9		1100	1390
NiCr 25/20	23.0~27.0	18.0~22.0	Bal.	0.95	7.8		1000	1290

	Ni	Cr	Al	Fe	Cu	Resisivity 20°C (Ω mm2/m)		Density (g/cm3)	Max.°C Temperature
Karma	Bal.	19~21.5	2.5~3.2	2~3	-		1.33	8.1	-50-300
Evan	Bal.	19~21.5	2.5~3.2	-	2~3		1.33	8.1	-50-300
FeCrAl Alloy	Cr	Al	Fe	Re	Resisivity 20°C (Ω mm2/m)		Density (g/cm3)	Max.°C Temperature	Melting Point°C
1Cr13Al4	12.0~15.0	4.0~60	Bal.	Proper	1.25		7.40	950	1450
Cr15Al5
Cr21Al4	17.0~21.0	2.0-4.0	Bal.	Proper	1.23		7.35	1100	1500
Cr25Al5	23.0-26.0	4.5-6.5	Bal.	Proper	1.42		7.10	1250	1500
Cr21Al6 Cr23Al5	19.0~22.0 20.5-23.5	5.0-7.0 4.2-5.3	Bal. Bal.	Proper Proper	1.42 1.35		7.16 7.25	1250 1250	1500 1500
Cr21Al6Nb	21.0-23.0	5.0-7.0	Bal.	Proper	1.45		7.10	1350	1510
Cr27Al7Mo2	26.5-27.8	6.0-7.0	Bal.	Proper	1.53		7.10	1400	1520