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Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding

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Good quality Bimetallic Strip for sales
Good quality Bimetallic Strip for sales
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Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding

China Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding supplier
Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding supplier Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding supplier Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding supplier

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Product Details:

Place of Origin: China
Brand Name: Ohmalloy
Certification: ГОСТ 10994 - 74
Model Number: Permalloy 1J79

Payment & Shipping Terms:

Minimum Order Quantity: 1 kg
Packaging Details: Coil+ Protective material+ wooden case
Delivery Time: 25 days after received payment
Payment Terms: T/T, Western Union, L/C
Supply Ability: 100 kg per month
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Detailed Product Description
Thickness: 0.05mm Width: Max. 100mm
Surface: Bright Coil Weight: 1-5 Kg
Condition: Semi- Hard Package: Coil
Magnetic Properties: 2 Class

Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding
 
 


OhmAlloy-1J79 (Soft magnetic alloy)
(Common Name: Ni79Mo4, E11c, malloy, permalloy, 79HM)

 

 

Ohmalloy-1J79 widely used in radio-electronic industry, precision instruments, remote control and automatic control system.

 

It is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content. Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories, 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 resistivity can 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. Permalloy is used in transformer laminations and magnetic recording heads.

 

 

 

Normal composition%

Ni 78.5~80.0 Fe Bal. Mn 0.6~1.1 Si 0.3~0.5
Mo 3.8~4.1 Cu ≤0.2        
C ≤0.03 P ≤0.02 S ≤0.02    

 

 

Typical Mechanical properties

Yield strength Tensile Strength Elongation
Mpa Mpa %
980 1030 3~50

 

Typical Physical properties

Density (g/cm3) 8.6
Electrical resistivity at 20(Ωmm2/m) 0.55
Coefficient of linear expansion(20~200)X10-6/ 10.3~11.5
Saturation magnetostriction coefficient λθ/ 10-6 2.0
Curie point Tc/ 450

 

 

 

 

 

 

 

 

 

 

 

 

The magnetic properties of alloys with high permeability in weak fields

1J79 Initial permeability Maximum permeability Coercivity Saturation magnetic induction intensity

Сold-rolled strip/ sheet.

Thickness, mm

μ0.08/ (mH/m) μm/ (mH/m) Hc/ (A/m) BS/ T
0.01 mm 17.5 87.5 5.6

 

 

 

 

 

 

 

 

 

 

0.75

0.1~0.19 mm 25.0 162.5 2.4
0.2~0.34 mm 28.0 225.0 1.6
0.35~1.0 mm 30.0 250.0 1.6
1.1~2.5 mm 27.5 225.0 1.6
2.6~3.0 mm 26.3 187.5 2.0
cold drawn wire  
0.1 mm 6.3 50 6.4
Bar  
8-100 mm 25 100 3.2
               

 

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 ℃.
The heating temperature and rate 1100~1150℃
Holding time 3~6
Cooling rate With 100 ~ 200 ℃/ h cooled to 600 ℃, rapidly cooled to 300℃

 

Permalloy Foil Soft Magnetic Alloys Thickness 0.05mm For Magnetic Shielding

 

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