1j79 Soft Strip for Magnetic Head

• Classification: 80%
• Density: 8.6 g/cm3
• Resisivity: 0.92
• Curie Point: 450 C
• State: Soft
• Brand: 4j6
• Model NO.: 1J79
• Saturation Magnetostriction Coefficient: 2
• Hardness: 120~210 Hv
• Tensile Strength: 560~1030 MPa
• Yield Strength: 150~980 MPa
• Elongation: 3~50 %
• Use: High Frequency Inductive Components
• OEM: Yes
• Stock: Seyn
• Sample: Free
• Transport Package: Export Packing
• Specification: Can discuss
• Trademark: HUONA
• Origin: Shanghai
• HS Code: 75052200
• Production Capacity: 50 Ton/Month

Product Description

1J79 Soft Strip for Magnetic Head

Product Description

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

High permeability soft magnetic alloy

High permeability soft magnetic alloy mainly nickel base alloy, nickel content is over 75%, this kind of alloy has the very high initial permeability and permeability.Often referred to as permalloy, also known as the early high magnetic conductivity alloy.They all have good processing performance, can be rolled into thin strip.

Soft Magnetic Alloy is suitable for application in the ac weak magnetic field.Such as TV and instrumentation in various audio transformer, the high accuracy bridge transformer, transformer, magnetic shielding, magnetic amplifier, magnetic modulator, audio head, choke, precision electric meter of the piece and piece, etc

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

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 20ºC(Om*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

 

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 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

Style of supply

Alloys Name	Type	Dimension
1J79	Wire	D= 0.1~8mm
1J79	Strip	W= 8~390mm	T= 0.3mm
1J79	Foil	W= 10~100mm	T= 0.01~0.1
1J79	Bar	Dia= 8~100mm	L= 50~1000

Soft magnetic alloy are in weak magnetic field with high permeability and low coercive force of alloys.This kind of alloy are widely used in radio electronics, precision instruments and meters, remote control and automatic control system, the combination is mainly used for energy conversion and information processing, the two aspects of is an important material in the national economy.