Iron
Fe
Bal.
Nickel
Ni
79.0~81.0%
Molybdenum
Mo
4.8~5.2%
Silicon
Si
0.15~0.3%
Manganese
Mn
0.3~0.6%
Copper
Cu
≤0.2%
Carbon
C
≤0.03%
Sulphur
S
≤0.02%
Phosphorus
P
≤0.02%
Ni80Mo5 Permalloy refers to an iron-nickel alloy with a wide range of nickel content, ranging from 35% to 90%. The biggest feature of Permalloy is its high magnetic permeability in weak magnetic fields. Their saturation magnetic induction intensity is generally between 0.6-1.0T.
1J85 alloy is smelted in a vacuum induction furnace. After being cast into a steel ingot, it is hot forged into a slab, then after hot rolling, pickling, and surface finishing, it is cold rolled into a finished strip or forged into the required bar. Most of these alloys are said to be used under alternating magnetic fields. They are mainly used for high-conductivity yoke irons, sensitive relays, low-loss micromotors, low-power power transformers, pulse transformers, transistor switches, magnetic amplifiers, magnetic modulators, and sensitive signals. Input and output transformers, magnetic sensors of aviation magnetic heading instruments, magnetic sensitive components in magnetic measuring instruments, moving and stators in precision electric meters, magnetic shielding and magnetic temperature compensation components.
Ni80Mo5 Mechanical performance (1.0mm)
| Yield strength |
Tensile Strength |
Elongation |
| Mpa |
Mpa |
% |
| 980 |
1030 |
3~50 |
Ni80Mo5 Physical properties
| Density |
Resistivity
at 20℃ |
Coefficient of linear expansion
20℃~200℃ |
Saturation magnetostriction coefficient |
Curie point |
| (g/cm3) |
(Ωmm2/m) |
X10-6/℃ |
λθ/ 10-6 |
Tc/ ℃ |
| 8.75 |
0.56 |
10.9~11.2 |
0.5 |
400 |
| Magnetic properties |
| Ni80Mo5 |
Initial permeability |
Maximum permeability |
Coercivity |
Saturation magnetic induction |
Cold rolled strip or plate
Thickness, mm |
μ0.08/ (mH/m) |
μm/ (mH/m) |
Hc/ (A/m) |
BS/ T |
| ≥ |
≤ |
| 0.01 mm |
20 |
87.5 |
4.8 |
0.75 |
| 0.1~0.19 mm |
37.5 |
187.5 |
1.6 |
| 0.2~0.34 mm |
50 |
225 |
1.2 |
| 0.35~1.0 mm |
62.5 |
312.5 |
0.8 |
| 1.1~2.5 mm |
50 |
187.5 |
1.2 |
| 2.6~3.0 mm |
43.8 |
150 |
1.44 |
| Cold drawn wire |
|
| 0.1 mm |
8.7 |
37.6 |
6.4 |
| Bar |
|
| 8-100 mm |
37.5 |
125 |
1.6 |
| Heat treatment method |
| Annealing medium |
Dry hydrogen (the dew point is not higher than -40℃) or vacuum, the residual pressure is not more than 0.1Pa |
| Heating temperature and speed |
1100~1200℃ |
| Holding time/h |
3~6 |
| Cooling rate |
Cool to 600°C at a rate of 100 ~ 200 ℃/h, then cool to 300°C at a rate of not less than 400°C/h |
Ni80Mo5 Supply form and specification
| Alloy grade |
Form |
Size |
| Ni80Mo5 |
Wire |
D= 0.1~8mm |
| Ni80Mo5 |
Strip |
W= 8~290mm |
T= 0.3~2.5mm |
| Ni80Mo5 |
Foil |
W= 10~100mm |
T= 0.01~0.1mm |
| Ni80Mo5 |
Bar |
Dia= 8~100mm |
L= 50~1000mm |
