Nisil NNX

StripDatasheet

Datasheet updated 2021-02-04 13:46 (supersedes all previous editions)

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^®.

Nisil is an austenitic nickel-silicon alloy (NiSi alloy) used for the negative leg of thermocouple type N. It offers better oxidation resistance than type E, J and K thermocouples.

Nisil alloy cannot be exposed to sulphur-containing gases. This thermocouple alloy is the most recent one among the different types covered by the international standards.

Yield strength	Tensile strength	Elongation
R_p0.2	R_m	A
MPa	MPa	%
300	680	33

Density g/cm³	8.59
Electrical resistivity at 20°C Ω mm²/m	0.36

Coefficient of thermal expansion
Temperature °C	Thermal Expansion x 10^-6/ K
20 - 100	17

Thermal Conductivity
Temperature °C	20
W m^-1 K^-1	17

Thermoelectric properties
**Nominal EMF values Vs NICROSIL**
Temperature °C	mV
100	2.774
200	5.913

Size range

Standard sizes for thermocouple strip range from thickness 0.10 to 3.0 mm (0.0039 to 0.181 inch) and width from 4 to 195 mm (0.157 to 7.68 inch).

Melting point °C	1420
Magnetic properties	The material is non- magnetic.

Nisil NNX

Mechanical properties

Physical properties