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 wire 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 is used in home appliances and industrial furnaces. 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
-
Wire size
Yield strength
Tensile strength
Elongation
Hardness
Ø
Rp0.2
Rm
A
mm (in)
MPa (ksi)
MPa (ksi)
%
Hv
1.0 (0.04)
485 (70)
670 (97)
23
230
4.0 (0.16)
450 (65)
650 (94)
18
230
Mechanical properties at elevated temperature
Temperature °C (°F)
900 (1652)
MPa (ksi)
34 (4.9)
Ultimate tensile strength - deformation rate 6.2 x 10-2/min
Creep strength - 1% elongation in 1000 h
Temperature °C (°F)
800 (1472)
900 (1652)
MPa (psi)
1.2 (170)
0.5 (73)
Density g/cm3 (lb/in3)
7.25 (0.262)
Electrical resistivity at 20°C Ω mm2/m (Ω circ. mil/ft)
1.35 (812)
Poisson's ratio
0.30
Young's modulus
Temperature °C
20
100
200
400
600
800
1000
Temperature °F
68
212
392
752
1112
1472
1832
GPa
220
210
205
190
170
150
130
Msi
32
30
30
28
25
22
19
Temperature factor of resistivity
Temperature °C
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
Temperature °F
212
392
572
752
932
1112
1292
1472
1652
1832
2012
2192
2372
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 (°F)
Thermal Expansion x 10-6/K (10-6 /°F)
20 - 250 (68-482)
11 (6.1)
20 - 500 (68-932)
12 (6.7)
20 - 750 (68-1382)
14 (7.8)
20 - 1000 (68-1832)
15 (8.3)
Thermal conductivity
Temperature °C
50
600
800
1000
1200
Temperature °F
122
1112
1472
1832
2192
W m-1 K-1
11
20
22
26
27
Btu h-1ft-1°F-1
6.4
11.6
12.7
15.0
15.6
Specific heat capacity
Temperature °C
20
200
400
600
800
1000
1200
Temperature °F
68
392
752
1112
1472
1832
2192
kJ kg-1 K-1
0.46
0.56
0.63
0.75
0.71
0.72
0.74
Btu lb-1 °F-1
0.11
0.13
0.15
0.18
0.17
0.17
0.18
Melting point °C (°F)
1500 (2732)
Max continuous operating temperature in air °C (°F)
1300 (2372)
Magnetic properties
The material is magnetic up to approximately 600°C (1112°F)(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®.
