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Nikrothal TE (Resistance heating wire and resistance wire)

Datasheet updated 2013-03-18 15:59:02 (supersedes all previous editions)

Nikrothal TE is an austenitic nickel-chromium (NiCr) for use at temperatures up to 1200°C (2190°F). The alloy is developed for use in metal sheathed tubular elements.

The alloy combines low nickel content and low temperature factor of resisitivity. It is a highly attractive alternative to alloys with higher nickel content, such as Nikrothal 80. In most tubular element applications it is possible to achieve at least the same indicated service life by performing a slight element redesign.

Chemical composition

C % Si % Mn % Cr % Ni % Fe %
Nominal composition Bal.
Min - 1.5 - 21.0 - 8.0
Max 0.10 3.0 1.0 23.0 - 9.0

Mechanical properties

Wire size Yield strength Tensile strength Elongation Hardness
Ø Rp0.2 Rm A
mm (in.) MPa (ksi) MPa (ksi) % Hv
0.5 (0.020) 390 (56,6) 800 (116) 35 190

Physical properties

Density g/cm (lb/in3) 8.10 (0.293)
Electrical resistivity at 20°C Ω mm2/m (Ω/cmf) 1.19 (716)
Temperature factor of resistivity
Temperature°C 100 200 300 400 500 600 700 800 900 1000 1100 1200
Ct 1.02 1.03 1.04 1.05 1.06 1.06 1.06 1.06 1.06 1.07 1.07 1.08
Coefficient of thermal expansion
Temperature °C (°F) Thermal Expansion x 10-6/K
20 - 250 (68-482) 14
20 - 500 (68-932) 15
20 - 750 (68-1382) 16
20 - 1000 (68-1832) 17
Melting point °C (°F) 1350 (2462)
Max continous operating temperature in air °C (°F) 1200 (2190)
Magnetic properties The material is non-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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