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 |
R0.2 |
Rm |
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 |
| Temperature °C |
Thermal Expansion X10-6 /K |
COEFFICIENT OF THERMAL EXPANSION
| 20-100 |
1.5 |
| 20-200 |
2.5 |
| Temperature °C |
100 |
THERMAL CONDUCTIVITY
| W m-1 K-1 |
11 |
| Temperature °C |
20 |
SPECIFIC HEAT CAPACITY
| 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). |
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