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® D ribbon is a ferritic iron-chromium-aluminium alloy (FeCrAl alloy) for use at temperatures up to 1300°C (2370°F). The alloy is characterized by high resistivity and good oxidation resistance.
Kanthal® D ribbon is used in home appliances as well as in industrial applications. Typical applications in home appliances include metal sheathed tubular elements for dishwashers, elements embedded in ceramics for panel heaters, cartridge elements in metal dies, heating cables and rope heaters in defrosting and deicing elements, mica elements used in irons, quartz tube heaters for space heating, industrial infrared dryers, in coils on molded ceramic fibre for boiling plates with ceramic hobs, in bead insulated coils for panel heaters, in suspended coil elements for air heaters in laundry dryers.
In industrial applications Kanthal® D is used in, for example, terminals to furnace elements, porcupine elements for air heating, and in furnace heating elements.
C %
Si %
Mn %
Cr %
Al %
Fe %
Nominal composition
4.8
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
0.20
550
725
17
220
Mechanical properties at elevated temperature
Temperature °C
900
MPa
34
Ultimate tensile strength - deformation rate 6.2 x 10 -2 min -1
Creep strength - 1% elongation in 1000 h
Temperature °C
800
1000
MPa
1.2
0.5
Density g/cm3
7.25
Electrical resistivity at 20°C Ω mm2/m
1.35
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
1.05
1.06
1.07
1.07
1.07
1.08
1.08
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 materials under the trademark Kanthal®.