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Kanthal A Resistance Heating Wire and Resistance Wire

Grand Metal Corporation carries a variety of Kanthal Brand product and supply at reasonable cost.

Kanthal A 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 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.

Useful Information of Kanthal Resistance heating wire and resistance wire

Chemical Composition
Si % Mn % Cr % Al % Fe %
C %
Nominal composition 5.3 Bal.
Min - - - 20.5 -
Max 0.08 0.7 0.5 23.5 -

Mechanical Properties

Wire size Yield strength Tensile strength Elongation Hardness
Ø Rp0.2 Rm A
mm MPa MPa % Hv
1 550 725 22 230
4 450 660 24 230

Mechanical Properties At Elevated Temperature

Temperature °C 900
MPa 34

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 1.01 1.01 1.02 1.03 1.04 1.04 1.05 1.05 1.06 1.06 1.06 1.06
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 0.7
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