Introduction
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
China
Japan
USA
Germany
France
Russia
U.K.
GB
HE
ASTM
YOUR ONE/YOUR
NF EN/NF
GUEST
BS EN/BS
(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
≤0.03
≤0.02
0.60-1.10
0.30-0.50
78.5-80.0
-
3.80-4.10
≤0.20
Balance
Heat Treatment Method

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
Detection
Processing

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?
A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.Q3: How do you control the quality ?A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .Q4: How about your delivery time ?A4: Generally delivery time is 15 working days .Q5: How can I quickly get the price list ?A5: Directly click "chat now"
or send us email with detail specifications,you will get the official price list in 1 hour .