FeCrAl alloy Resistance Wire

FeCrAl Resistance Wire has high resistance, low temperature coefficient of electric resistance, high operating temperature, and good corrosion resistance under high temperature, especially under the atmosphere containing sulfides. It possesses good oxidation and heat resistance.This kind of resistance wire is creep-resistant over a wide range of temperature, which is another of their important qualities.

FeCrAl Resistance Wire has several potential advantages, such as lower raw-material cost, superior oxidation resistance, lower density, and lower thermal expansion coefficient than the Ni-base super-alloys.

FeCrAl Resistance Wire has less hot strength than nickel s but much higher melting point and lower price. After being heated the Resistance Wire's plasticity becomes bad, easy brittleness, not to be easy to weld. However, If can be reasonably used, also be a kind of ideal electric heating material.

FeCrAl Resistance Wires are made of iron chromium aluminum base s containing small amounts of reactive elements such as yttrium and zirconium. The high aluminum content, in combination with the high chromium content causes the scaling temperature to increase up to 1425 C (2600F ); Fe Cr Al Resistance Resistance Wire s also have excellent oxidation properties at 800-1300° C because of the formation of a highly protective Al2O3 scale.

FeCrAl Resistance Wire intended for prolonged operation at high temperature. It isused chiefly for heating elements in the electrical industry and wide range of high-temperature oxidation environments, such as industrial electric furnace, heating furnace, nuclear reactor, petroleum refinery and automotive exhaust system, household electrical appliance, electrical oven, electrical heater, infrared settings and far infrared ray device. Because of FeCrAl Resistance Wire' ability to withstand oxidation, the it can be employed under high-temperature conditions, while their good ductility enables them to be processed into Resistance Wire and Resistance Wire by hot and cold working.

Type		1Cr13Al4	0Cr25Al5	0Cr21Al6	0Cr23Al5	0Cr21Al4	0Cr21Al6Nb	0Cr27Al7Mo2
Main Chemical composition	Cr	12.0-15.0	23.0-26.0	19.0-22.0	22.5-24.5	18.0-21.0	21.0-23.0	26.5-27.8
	Al	4.0-6.0	4.5-6.5	5.0-7.0	4.2-5.0	3.0-4.2	5.0-7.0	6.0-7.0
	Re	opportune	opportune	opportune	opportune	opportune	opportune	opportune
	Fe	Rest	Rest	Rest	Rest	Rest	Rest	Rest
Maximal Temperature (°C)		650	1250	1250	1250	1100	1350	1400
Resistivity 20°C (10-6ohm*m)		1.25	1.42	1.42	1.35	1.23	1.45	1.53
Density(g/cm3)		7.4	7.1	7.16	7.25	7.35	7.1	7.1
Thermal conductivity (KJ/m*h*°C)		52.7	46.1	63.2	60.2	46.9	46.1	45.2
Extend strength (a*10-6/°C)		15.4	16	14.7	15	13.5	16	16
Melting point ( °C)		1450	1500	1500	1500	1500	1510	1520
Tensile strength(N/mm2)		588-735	630-780	637-780	630-780	637-784	650-800	680-830
Extension rate%		>16	>12	>12	>12	>12	>12	>10
Section shrink rate (%)		65-75	60-75	65-75	65-75	65-75	65-75	65-75
Repeatedly bending frequency (F/R)		>5	>5	>5	>5	>5	>5	>5
Specific heat J/g.		0.49	0.494	0.52	0.46	0.49	0.494	0.494
Linear expansion coefficient a×10-6/201000		15.4	16	14.7	15	13.5	16	16
hardness (H.B.)		200-260	200-260	200-260	200-260	200-260	200-260	200-260
Rapid life h/			≥80/1250	≥80/1300	≥80/1300	≥80/1300	≥80/1350	≥80/1350
Microstructure		Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Magnetism		Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic

             





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