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 |
Rm |
| mm |
MPa |
| 5.8 |
Min 700 |
Physical properties
| Density g/cm3 |
8.12 |
| Electrical resistivity at 20°C Ω mm2/m |
0.63 |
| Temperature °C |
Thermal Expansion X10-6 /K |
COEFFICIENT OF THERMAL EXPANSION
| 20-100 |
4.5 |
| Temperature °C |
100 |
THERMAL CONDUCTIVITY
| W m-1 K-1 |
15 |
| Temperature °C |
20 |
SPECIFIC HEAT CAPACITY
| 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). |
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