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 materials under the trademark Kanthal®.
Kanthal® A ribbon is a ferritic iron-chromium-aluminium alloy (FeCrAl alloy) with high resistivity and good oxidation resistance for use at temperatures up to 1350°C (2460°F).
Kanthal® A ribbon is typically used in industrial furnaces and home appliances. Examples of applications are elements embedded in ceramics for panel heaters, infrared heaters, warming plates, irons, ceramic pots, in cartridge heaters for liquid heating, storage heaters, in ceramic heaters for cooking plates, air guns, hobby kilns, radiators, in quartz tube heaters for space heating, toasters, toaster ovens, grills, industrial infrared dryers, coils on molded ceramic fibre for cooking plates with ceramic hobs.
C %
Si %
Mn %
Cr %
Al %
Fe %
Nominal composition
5.3
Bal.
Min
-
-
-
20.5
-
Max
0.08
0.7
0.5
23.5
-
Thickness
Yield strength
Tensile strength
Elongation
Hardness
Rp0.2
Rm
A
mm
MPa
MPa
%
Hv
0.5
505
725
17
230
Mechanical properties at elevated temperature
Temperature °C
900
MPa
34
Ultimate tensile strength - deformation rate 6.2 x 10-2/min
Creep strength - 1% elongation in 1000 h
Temperature °C
800
1000
MPa
1.2
0.5
Density g/cm3
7.15
Electrical resistivity at 20°C Ω mm2/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
1350
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 materials under the trademark Kanthal®.
