NiFe alloys
Low-resistivity nickel-iron alloys with high temperature coefficient of resistance for use up to 600ºC.
Nifethal 70 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 600°. The alloy has very low resistivity and high temperature coefficient of resistance. Some
applications for Nifethal 70 are in voltage regulators, timing devices, temperature sensitive resistors, temperature compensating devices and low temperature heating applications.
Nifethal 52 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 600°C. The alloy has low resistivity and high temperature coefficient of resistance. Nifethal 52 is
used in voltage regulators, timing devices, temperature sensitive resistors, temperature compensating devices, and low temperature heating applications.
Nifethal 42 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 600°C. The alloys has a moderate constant thermal expansion factor up to 300°C. Nifethal 42 is used in
high-temperature thermostats, for example, gas and electric stoves.
Nifethal® 70 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 600°C (1110°F). The alloy is characterized by very low resistivity and high temperature coefficient of
resistance.
Typical applications for Nifethal® 70 are in voltage regulators, timing devices, temperature sensitive resistors, temperature compensating devices and low temperature heating
applications.
Chemical composition
|
Nifethal® 70
|
Ni %
|
Fe %
|
|
Nominal composition
|
72
|
Bal.
|
Mechanical properties
|
Wire size
|
Yield strength
|
Tensile strength
|
Elongation
|
|
Ø
|
R p0.2
|
Rm
|
A
|
|
mm
|
MPa
|
MPa
|
%
|
|
0.5
|
340
|
640
|
30
|
Physical properties
|
Density g/cm3
|
8.45
|
|
Electrical resistivity at 20°C Ω mm2/m
|
0.20
|
|
Temperature °C
|
100
|
150
|
200
|
250
|
300
|
350
|
400
|
450
|
500
|
TEMPERATURE FACTOR OF RESISTIVITY
|
Ct
|
1.42
|
1.68
|
1.91
|
2.19
|
2.47
|
2.75
|
3.03
|
3.34
|
3.66
|
|
Temperature °C
|
Thermal Expansion X10-6/K
|
COEFFICIENT OF THERMAL EXPANSION
|
20-100
|
15
|
|
Temperature °C
|
20
|
THERMAL CONDUCTIVITY
|
W m-1 K-1
|
17
|
|
Temperature °C
|
20
|
SPECIFIC HEAT CAPACITY
|
kJ kg-1 K-1
|
0.52
|
|
Melting point °C
|
1430
|
|
Max continuous operating temperature in air °C
|
600
|
|
Magnetic properties
|
The material is magnetic up to approximately 610°C (the Curie point).
|
