Magnetic Heads Alloys | HB SPEICAL ALLOY

Soft Magnetic Alloys with Constant Permeability

1J75, 1J77C, 1J79C, 1J85C, 1J87C, 1J92, 1J93, 1J94, 1J95

This kind of iron nickel alloy with high permeability has high initial permeability. Make all kinds of transformer iron core, transformer, magnetic amplifier, choke iron core and magnetic shield working in weak magnetic field.

Chemical Composition, %

Alloy

1J75

≤0.03

≤0.02

≤0.30

0.5-1.0

74-76

1.5-2.0

–

5.0-7.0

1.0-1.5

–

Rest

1J77C

≤0.03

≤0.02

≤0.30

≤0.7

76.5-78.0

3.5-4.5

–

3.8-5.3

–

Rest

1J79C

≤0.03

≤0.02

≤0.30

0.7-1.2

78.0-81.5

3.7-4.5

–

Rest

1J85C

≤0.03

≤0.02

0.3-0.6

0.3-0.7

80.0-81.5

5.0-6.0

–

Rest

1J87C

≤0.03

≤0.02

0.15-0.30

0.3-0.6

80.0-81.5

1.0-2.0

4.0-5.5

–

Rest

1J92

≤0.03

≤0.02

≤0.30

≤0.6

80.1-81.5

1.0-1.5

3.0-4.0

–

1.0-1.5

–

Rest

1J93

≤0.03

≤0.02

≤0.30

0.3-0.6

80.5-81.5

3.0-4.0

3.0-4.5

–

Rest

1J94

≤0.03

≤0.02

≤0.30

0.3-0.6

79.5-81.0

4.5-5.0

0.6-1.0

1.5-2.5

–

0.3-0.7

Rest

1J95

≤0.03

≤0.02

2.8-3.3

–

83-84

1.2-1.6

0.4-0.6

–

Rest

DC Magnetic Properties

Alloy	Permeability at a magnetic field intensity of 0.4 A/m, μ0.4/mH˙m-1	Maximum permeability μm/mH˙m-1	Saturation magnetic induction Bs/T	Coercive force (under saturation magnetic induction) Hc/A˙m-1
1J75	≥30000(37.5)	≥150000(187.5)	≥0.70	≤1.6
1J77C	≥30000(37.5)	≥100000(125)	≥0.67	≤2.0
1J79C	≥30000(37.5)	≥100000(125)	≥0.75	≤1.6
1J85C	≥30000(37.5)	≥100000(125)	≥0.68	≤1.6
1J87C	≥35000(43.75)	≥150000(187.5)	≥0.64	≤1.5
1J92	≥35000(43.75)	≥150000(187.5)	≥0.70	≤1.5
1J93	≥35000(43.75)	≥100000(125)	≥0.60	≤2.0
1J94	≥40000(50)	≥100000(125)	≥0.60	≤1.6
1J95	≥40000(50)	≥100000(125)	≥0.55	≤1.6

AC Magnetic Properties

Alloy	Thickness, mm	Permeability at different frequencies measured at the peak value of magnetic field intensity of 0.8 A/m, μm/mH˙m-1
Alloy	Thickness, mm	0.3 kHz	1 kHz	10 kHz	100 kHz
1J75	0.094	≥30000(37.5)	≥20000(25)	≥6000(7.5)	≥1200(1.5)
	0.116	≥25000(31.25)	≥18000(22.5)	≥5000(6.25)	≥1000(1.25)
	0.146	≥20000(25)	≥14000(17.5)	≥4000(5)	≥700(0.875)
	0.196	≥15000(18.75)	≥10000(12.5)	≥3000(3.75)	≥500(0.625)
1J79C	0.094	≥30000(37.5)	≥15000(18.75)	≥5000(6.25)	≥1200(1.5)
	0.116	≥20000(25)	≥12000(15)	≥4000(5)	≥1000(1.25)
	0.146	≥12000(15)	≥10000(12.5)	≥3000(3.75)	≥700(0.875)
	0.196	≥10000(12.5)	≥8000(10)	≥2500(3.125)	≥500(0.625)
1J85C	0.094	≥30000(37.5)	≥20000(25)	≥7000(8.75)	≥1500(1.875)
	0.116	≥25000(31.25)	≥18000(22.5)	≥6000(7.5)	≥1200(1.5)
	0.146	≥20000(25)	≥14000(17.5)	≥5000(6.25)	≥700(0.875)
	0.196	≥15000(18.75)	≥10000(12.5)	≥3000(3.75)	≥500(0.625)
	0.32	≥10000(12.5)	≥8000(10)	≥1500(1.875)	≥300(0.375)
1J87C	0.094	≥35000(43.75)	≥25000(31.25)	≥7000(8.75)	≥1500(1.875)
	0.116	≥30000(37.5)	≥20000(25)	≥6000(7.5)	≥1200(1.5)
	0.146	≥25000(31.25)	≥15000(18.75)	≥5000(6.25)	≥800(1)
	0.196	≥15000(18.75)	≥10000(12.5)	≥3000(3.75)	≥600(0.75)
1J92	0.094	≥30000(37.5)	≥25000(31.25)	≥6000(7.5)	≥1400(1.75)
	0.116	≥25000(31.25)	≥20000(25)	≥5500(6.875)	≥1200(1.5)
	0.146	≥20000(25)	≥15000(18.75)	≥4500(5.625)	≥800(1)
	0.196	≥15000(18.75)	≥10000(12.5)	≥3000(3.75)	≥600(0.75)
1J93	0.094	≥40000(50)	≥25000(31.25)	≥8000(10)	≥1500(1.875)
	0.116	≥35000(43.75)	≥20000(25)	≥7000(8.75)	≥1200(1.5)
	0.146	≥30000(37.5)	≥15000(18.75)	≥5000(6.25)	≥1000(1.25)
	0.196	≥20000(25)	≥12000(15)	≥4000(5)	≥600(0.75)
1J94	0.118	–	≥25000(31.25)	–	≥1400(1.75)
	0.146	–	≥15000(18.75)	–	≥1000(1.25)
	0.196	–	≥10000(12.5)	–	≥700(0.875)
1J95	0.116	–	≥20000(25)	–	≥1300(1.625)
	0.146	–	≥14000(17.5)	–	≥700(0.875)
	0.196	–	≥10000(12.5)	–	≥500(0.625)

Available Products and Specifications

Rod, Bar, Wire and Forgings	–
Plate, Sheet and Strip	YB/T 086-2013
Pipe and Tube	–
Welding Product	–
Others	–

Features

At the frequency of 0.3-100kHz, it has high impedance permeability, good stability of magnetism to stress, temperature and time, high hardness, good wear resistance and corrosion resistance. Its machinability can meet the processing requirements of deep drawing, bending, grinding and welding. The strip has high dimensional accuracy, heavy roll and good appearance quality.

Applications

Head housing, chips and isolators for magnetic recording devices in computers, magnetic card machines, video recorders, tape recorders, digital coders, radio, television and film equipment.