| Customization: | Available |
|---|---|
| Key Words: | 1j79 Bar/Rod |
| Thickness: | 3.0mm - 300mm |
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LORK is a alloy manufacturer with 20 years of manufacturing experience.
Permalloy refers to ferro-nickel alloy, which has a wide range of nickel content between 35% and 90%. The most important feature of Permalloy is its high magnetic conductivity of weak magnetic field. Their saturated magnetic induction strength is generally between 0.6 and 1.0T.
Permalloy is a nickel-iron magnetic alloy, with about 80% nickel and 20% iron content. it is notable for its very high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, and also in magnetic shielding to block magnetic fields. Commercial permalloy alloys typically have relative permeability of around 100,000, compared to several thousand for ordinary steel. In addition to high permeability, its other magnetic properties are low coercivity, near zero magnetostriction, and significant anisotropic magnetoresistance. The low magnetostriction is critical for industrial applications, allowing it to be used in thin films where variable stresses would otherwise cause a ruinously large variation in magnetic properties. Permalloy's electrical resistivitycan vary as much as 5% depending on the strength and the direction of an applied magnetic field. Permalloys typically have the face centered cubic crystal structure with a lattice constant of approximately 0.355 nm in the vicinity of a nickel concentration of 80%. A disadvantage of permalloy is that it is not very ductile or workable, so applications requiring elaborate shapes, such as magnetic shields, are made of other high permeability alloys such as mu metal.
Precision Soft Magnetic Alloy 1J79 Applications
- high frequency and low voltage transformer,
- leakage protection switch core,
- common mode inductor core
- current transformer core.
| China | Japan | USA | Germany | France | Russia | U.K. |
| GB | HE | ASTM | YOUR ONE/YOUR | NF EN/NF | GUEST | BS EN/BS |
| 1J79 (Ni79Mo4) |
PC | HY-Mu80 | High magnetic permeability 767 | Anny-SterM | 79NM | C-Permalloy |
| Material Type | C | P | S | Mn | Si | Ni | Cr | Co | Mo | Cu | Fe |
| 1J79 | ≤0.03 | ≤0.02 | ≤0.02 | 0.60-1.10 | 0.30-0.50 | 78.5-80.0 | - | - | 3.80-4.10 | ≤0.20 | Balance |
|
Material Type |
Process Type
|
Strip Thickness
|
Elastic magnetic conductivity at different frequencies when the magnetic field strength peak is 0.1A | |||
| 60Hz | 400Hz | 1KHz | 10kHz | |||
| Not Less Than | ||||||
|
1J79
|
Cold Roll
|
0.02 | - | - | 14000(17.5) | 10000(12.5) |
| 0.05 | - | - | 15040(18.8) | 7520(9.4) | ||
| 0.1 | - | 18000(22.5) | 12000(15) | - | ||
| 0.2 | - | 10000(12.5) | 6000(7.5) | - | ||
| 0.35 | 25 | 7040(8.8) | - | - | ||
| Properties | Metric |
|
Density (g/cm3) |
8.6 |
|
Electrical resistivity at 20ºC(mm2/m) |
0.55 |
|
Coefficient of linear expansion(20ºC~200ºC)X10-6/ºC |
10.3~11.5 |
|
Saturation magnetostriction coefficient λθ/ 10-6 |
2.0 |
|
Curie point Tc/ ºC |
450 |
|
Mode of heat treatment 1J79 |
|
|
Annealing media |
Vacuum with a residual pressure not higher than 0.1Pa, hydrogen with a dew point of not higher than minus 40 ºC. |
|
The heating temperature and rate |
1100~1150ºC |
|
Holding time |
3~6 |
|
Cooling rate |
With 100 ~ 200 ºC/ h cooled to 600 ºC, rapidly cooled to 300ºC |
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
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