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Nikrothal LX (Resistance heating wire and resistance wire)

Datasheet updated 2016-10-06 11:32:31 (supersedes all previous editions)

Nikrothal LX is an austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 300°C (570°F). The alloy is characterized by high resistivity in combination with low temperature coefficient of resistance.

Nikrothal LX is typically used for electronic components.

Chemical composition

C % Si % Mn % Cr % Fe % Al % Ni % Cu %
Nominal composition Bal.
Min - 0.50 2.1 18.0 - 2.40 - 1.60
Max 0.02 0.70 2.3 20.0 0.10 2.60 - 1.80

Mechanical properties

Yield strength Tensile strength Elongation
Rp0.2 Rm A
MPa MPa %
800-1200 950-1400 3-25

Physical properties

Density g/cm3 8.30
Electrical resistivity at 20°C Ω mm2/m 1.33

Temperature coefficient of resistance with reference to +25°C
Temperature range Temperature coefficient of resistance Temperature coefficient of resistance
-55 - +250 -5 - +5 -10 - +10

Thermal electromotive force against Cu μV/°C +1.0

Coefficient of thermal expansion
Temperature °C Thermal Expansion x 10-6/K
20 - 300 14

Thermal conductivity
Temperature °C 20
W m-1 K-1 15

Specific heat capacity
Temperature °C 20
kJ kg-1 K-1 0.46

Melting point °C 1390
Max continuous operating temperature in air °C 1150
Magnetic properties The material is slightly magnetic
Emissivity - fully oxidized material 0.88

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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