Nifethal® 42

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^® 42 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 600°C (1110°F). The alloys has a moderate constant thermal expansion factor up to 300°C (570°F).

Typical applications for Nifethal^® 42 are in high-temperature thermostats in, for example, gas and electric stoves.

Chemical composition

	Ni %	Fe %
Nominal composition	42.0	Bal.

Mechanical properties

Wire size	Tensile strength
Ø	R_m
mm	MPa
5.8	Min 700

Physical properties

Density g/cm³	8.12
Electrical resistivity at 20°C Ω mm²/m	0.63

Coefficient of thermal expansion
Temperature °C	Thermal Expansion X10^-6 /K
20-100	4.5

Thermal conductivity
Temperature °C	100
W m^-1 K^-1	15

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.50

Melting point °C	1425
Magnetic properties	The material is magnetic up to approximately 530°C (the Curie point).