Nifethal® 36

Resistance heating wire and resistance wireDatasheet

Datasheet updated 2021-02-04 13:32 (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^®.

Nifethal^® 36 is an austenitic nickel-iron alloy (NiFe alloy) with very low thermal expansion factor up to 180°C (356°F). The alloy is characterized by good mechanical resistance, ductility and malleability combined with corrosion resistance. Nifethal^® 36 is magnetic over its normal range of use.

Nifethal^® 36 is a standard alloy for applications where a low thermal expansion is required, up to a maximum of 180°C (356°F), which should not be exceeded.

Typical applications for Nifethal^® 36 are in thermostats bars, wires for precision measuring instruments and ignition cables for the automotive industry.

Chemical composition

	Ni %	Fe %
Nominal composition	36.0	Bal.

Mechanical properties

Wire size	Yield strength	Tensile strength	Elongation
Ø	R_0.2	R_m	A
mm	MPa	MPa	%
1.0	320	520	30

The values given apply for annealed wire

Physical properties

Density g/cm³	8.08
Electrical resistivity at 20°C Ω mm²/m	0.823

Coefficient of thermal expansion
Temperature °C	Thermal Expansion X10^-6 /K
20-100	1.5
20-200	2.5

Thermal conductivity
Temperature °C	100
W m^-1 K^-1	11

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.515

Melting point °C	1425
Magnetic properties	The material is magnetic up to approximately 180°C (the Curie point).