Project Description

High Permeability Alloys with High Hardness and High Electrical Resistance

Alloy

1J87, 1J88, 1J89, 1J90, 1J91

Specification

GB/T 14987-94

Product Forms

Sheet, Strip

Chemical Composition, %

AlloyCPSSiMnNiMoAlNbTiFe
1J87≤0.03≤0.02≤0.02≤0.300.3-0.678.5-80.51.6-2.26.5-7.5Rest
1J88≤0.03≤0.02≤0.02≤0.30≤0.679.5-80.57.5-9.0Rest
1J89≤0.03≤0.02≤0.02≤0.300.5-1.078.5-80.53.5-4.53.0-3.61.8-2.8Rest
1J90≤0.03≤0.02≤0.02≤0.30≤0.679.0-80.51.8-2.20.4-0.64.8-7.2Rest
1J91≤0.03≤0.02≤0.02≤0.30≤0.678.5-80.50.9-1.27.7-8.4Rest

Peak permeability

AlloyThickness, mmPeak permeability at 400Hz mH/m
I 0.8A/mI pm
1J870.20≥21040(26.3)≥40000(50)
1J900.35≥16000(20)≥28000(35)

Ac Magnetic Properties, Resistivity and Microhardness

AlloyThickness, mmAc magnetic propertiesResistivity μΩ.cmMicroHardness Hv
Initial permeability μi(mH/m)Maximum permeability μmax (mH/m)Corecive force Hc/A.mSaturation magnetic induction Bs/T
1J870.02-0.04≥30000(37.5)≥100000(125)≤2.0≥0.5≥75≥190
>0.04-0.09≥35040(43.8)≥120000(150)≤1.2≥0.5≥75≥190
>0.09-0.29≥40000(50)≥200000(250)≤0.8≥0.5≥75≥190
>0.29-0.50≥35040(43.8)≥180000(225)≤1.2≥0.5≥75≥190
>0.50-1.00≥35040(43.8)≥150000(187.5)≤1.6≥0.5≥75≥190
1J880.02-0.04≥30000(37.5)≥100000(125)≤2.0≥0.55≥70≥180
>0.04-0.09≥35040(43.8)≥120000(150)≤1.6≥0.55≥70≥180
>0.09-0.29≥40000(50)≥150000(187.5)≤1.2≥0.55≥70≥180
>0.29-1.00≥30000(37.5)≥100000(125)≤2.0≥0.55≥70≥180
1J890.02-0.04≥15040(18.8)≥70000(87.5)≤2.4≥0.45≥85≥200
>0.04-0.09≥20000(25)≥90000(112.5)≤1.6≥0.45≥85≥200
>0.09-0.29≥25040(31.3)≥100000(125)≤1.2≥0.45≥85≥200
>0.29-1.00≥20000(25)≥80000(100)≤1.6≥0.45≥85≥200
1J900.02-0.04≥30000(37.5)≥100000(125)≤2.0≥0.45≥85≥250
>0.04-0.09≥35040(43.8)≥150000(187.5)≤1.6≥0.45≥85≥250
>0.09-0.29≥40000(50)≥180000(225)≤0.8≥0.45≥85≥250
>0.29-1.00≥35040(43.8)≥150000(187.5)≤1.2≥0.45≥85≥250
1J910.02-0.04≥5000(6.25)≥40000(50)≤3.2≥0.45≥80≥300
>0.04-0.09≥8000(10)≥60000(75)≤2.0≥0.45≥80≥300
>0.09-0.29≥10000(12.5)≥80000(100)≤1.6≥0.45≥80≥300
>0.29-1.00≥8000(10)≥60000(75)≤2.0≥0.45≥80≥300

Elastic Permeability

AlloyThickness, mmElastic permeability at B=0.002T μi(mH/m)
1k Hz10k Hz100k Hz500k Hz1000k Hz
Not less than
1J870.0223040(28.8)20000(25)5440((6.8)1000(1.25)700(0.875)
0.0325040(31.3)17040(21.3)4000(5)800(1)500(0.625)
0.0526000(32.5)9040(11.3)1800(2.25)400(0.5)200(0.25)
0.123040(28.8)4504(5.63)800(1)
1J880.0222000(27.5)20000(25)4504(5.63)
0.0324000(30)17040(21.3)3000(3.75)
0.0522000(27.5)9040(11.3)1504(5.88)
0.120000(25)4504(5.63)780(0.975)
1J890.0212000(15)10000(12.5)5440((6.8)1200(1.5)800(1)
0.0314000(17.5)7000(8.75)4000(5)1000(1.25)600(0.75)
0.0516000(20)4000(5)1800(2.25)500(0.625)3000(0.375)
0.113040(16.3)2000(2.5)800(1)
1J900.0223040(28.8)20000(25)6000(7.5)1200(1.5)800(1)
0.0325040(31.3)17040(21.3)4504(5.63)904(1.13)
0.0526000(32.5)15040(18.8)2000(2.5)600(0.75)
0.123040(28.8)5000(6.25)904(1.13)
1J910.023904(4.88)3504(4.38)3000(3.75)1000(1.25)700(0.875)
0.034000(5)3200(4)1504(5.88)800(1)
0.054200(5.25)3000(3.75)1000(1.25)300(0.375)
0.13704(4.63)2000(2.5)500(0.625)

Feature

It has high initial permeability, high resistivity, high hardness, strength and wear resistance, and its magnetism is insensitive to stress.

Application

Tape recorders, video recorders, film projectors and computer digital tape machines, magnetic head chips, micro-special motors, transformers, sensors, magnetic amplifiers and other high-frequency inductors core.