KANTHAL AF round 0.7MM Resistance heating wire 5 METER!!! iron-chromium-alumi

Description

5 METER!!
OF KANTHAL AF round  0.7MM  Resistance heating wire
Kanthal AF is a ferritic iron-chromium-aluminium alloy
3.568 OHM / METER
1.09 OHM / FOOT
Kanthal AF
(Resistance heating wire and resistance wire)
Datasheet updated 2013-02-22 13:20:27
(supersedes all previous editions)
Kanthal AF is a ferritic iron-chromium-aluminium alloy (FeCrAl alloy) for use at temperatures up to 1300°C (2370°F). The alloy is characterized by excellent oxidation resistance and very good form stability resulting in long element life.
Kanthal AF is typically used in electrical heating elements in industrial furnaces and home appliances.
Example of applications in the appliance industry are in open mica elements for toasters, hair dryers, in meander shaped elements for fan heaters and as open coil elements on fibre insulating material in ceramic glass top heaters in ranges, in ceramic heaters for boiling plates, coils on molded ceramic fibre for cooking plates with ceramic hobs, in suspended coil elements for fan heaters, in suspended straight wire elements for radiators, convection heaters, in porcupine elements for hot air guns, radiators, tumble dryers.
Chemical composition
C %
Si %
Mn %
Cr %
Al %
Fe %
Nominal composition
5.3
Bal.
Min
-
-
-
20.5
-
Max
0.08
0.7
0.4
23.5
-
Mechanical properties
Wire size
Yield strength
Tensile strength
Elongation
Hardness
Ø
R
p0.2
R
m
A
mm
MPa
MPa
%
Hv
1.0
500
700
23
230
4.0
475
680
18
230
Mechanical properties at elevated temperature
Temperature °C
900
1000
1100
1200
1300
MPa
37
20
12
6
4
Ultimate tensile strength - deformation rate 6.2 x 10
-2
/min
Creep strength - 1% elongation in 1000 h
Temperature °C
1100
1200
MPa
1.7
0.3
Physical properties
Density g/cm
3
7.15
Electrical resistivity at 20°C Ω mm
2
/m
1.39
Poisson's ratio
0.30
Young's modulus
Temperature °C
20
100
200
400
600
800
1000
GPa
220
210
205
190
170
150
130
Temperature factor of resistivity
Temperature°C
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
Ct
1.00
1.01
1.01
1.02
1.03
1.04
1.04
1.05
1.05
1.06
1.06
1.06
1.06
Coefficient of thermal expansion
Temperature °C
Thermal Expansion x 10
-6
/K
20 - 250
11
20 - 500
12
20 - 750
14
20 - 1000
15
Thermal conductivity
Temperature °C
50
600
800
1000
1200
W m
-1
K
-1
11
20
22
26
27
Specific heat capacity
Temperature °C
20
200
400
600
800
1000
1200
kJ kg
-1
K
-1
0.46
0.56
0.63
0.75
0.71
0.72
0.74
Melting point °C
1500
Max continuous operating temperature in air °C
1300
Magnetic properties
The material is magnetic up to approximately 600°C (Curie point).
Emissivity - fully oxidized material
0.70
Disclaimer:
Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Kanthal materials.
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