AL NICO MAGNET CHEMICAL COMPOSITION

custom-shaped alnico 8 magnets

Alnico magnet is an alloy composed of metal aluminum, nickel, cobalt, iron and other trace elements. According to different production methods, it is divided into cast AlNiCo and sintered AlNiCo. The casting process is more suitable than the sintering process for manufacturing complex shapes. The maximum size that can be processed with this magnetic material is about 300mm.

The surface does not require electroplating treatment and has very good corrosion resistance. It is a good choice in some harsh environments. They are mainly used in various instruments, various sensors, various magnetic suckers, teaching aids, and acoustic equipment.

The chemical composition range of the materials is shown in the table below.

ComponentAlNiCoCuTiNbSiFe
Content (%)6~13.512~280~422~60~90~30~0.8the Remaining

Alnico has a high remanence ratio and an operating temperature as high as 550°, but its coercivity is very low. Therefore, it is not afraid of high temperatures, but is susceptible to magnetization or demagnetization due to the influence of external magnetic fields.

Its magnetic properties are about 1/5-1/4 of NdFeB and bigger than ferrite magnet. Under normal circumstances, the magnetic energy product is 4-5MGOe, and the maximum can be 12-13MGOe.

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    ALNICO MAGNET GRADES

    Grade
    MMPA
    Remanence
    Coercive Force
    Max. Energy
    Curie temperature
    Max Working Temp.
    Br Temp. Coefficient
    Hcj Temp. Coefficient
    abbr
    Br
    Hcb
    (BH) max
    Tc
    Tw.
    T.C.α(Br)
    T.C.α(Hcj)
    unit
    mT / Gs
    kA/m / Oe
    kJ/m3 / MGOe
    %/℃
    %/℃
    LNG10
    ALNICO 3
    600/6000
    44/550
    10/1.25
    750
    550
    -0.02
    -0.03~-0.07
    LNG12
    ALNICO 2
    700/7000
    44/550
    12/1.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG13
    680/6800
    48/600
    13/1.63
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG16
    ALNICO 4
    800/8000
    48/600
    16/2.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG18
    900/9000
    48/600
    18/2.25
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG37
    ALNICO 5
    1200/12000
    48/600
    37/4.63
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG40
    1230/12300
    48/600
    40/5.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG44
    1250/12500
    52/650
    44/5.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG48
    ALNICO 5 DG
    1280/12800
    56/700
    48/6.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG52
    1300/13000
    56/700
    52/6.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG56
    ALNICO 5-7
    1300/13000
    58/720
    56/7.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNG60
    1330/13300
    60/750
    60/7.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT28
    ALNICO 6
    1000/10000
    56/700
    28/3.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT30
    1100/11000
    56/700
    30/3.75
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT18
    ALNICO 8
    580/5800
    80/1000
    18/2.25
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT32
    800/8000
    100/1250
    32/4.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT38
    800/8000
    110/1380
    38/4.75
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT44
    850/8500
    115/1450
    44/5.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT48
    ALNICO8HE
    900/9000
    120/1500
    48/6.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT60
    ALNICO9
    900/9000
    110/1380
    60/7.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT72
    1050/10500
    112/1400
    72/9.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT80
    1080/10800
    120/1500
    80/10.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT88
    1100/11000
    115/1450
    88/11.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT96
    1150/11500
    118/1480
    96/12.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT36J
    ALNICO8HC
    700/7000
    140/1750
    36/4.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT40J
    700/7000
    140/1750
    40/5.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT44J
    750/7500
    140/1750
    44/5.50
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT48J
    800/8000
    145/1820
    48/6.00
    800~850
    550
    -0.02
    -0.03~-0.07
    LNGT52J
    850/8500
    140/1750
    52/6.50
    800~850
    550
    -0.02
    -0.03~-0.07