NEO MAGNET GRADES CLASSIFICATION

Neo magnet grades are classified into seven categories according to their intrinsic coercive force: low coercivity N, medium coercivity M, high coercivity H, super-high coercivity SH, ultra-high coercivity UH, extreme-high coercivity EH, and the tremendous coercivity TH.

CHEMICAL COMPOSITION OF SINTERED NEODYMIUM

Sintered NdFeB permanent magnet material is a permanent magnet material based on the intermetallic compound Nd2Fe1B. The main components are neodymium (Nd), iron (Fe), and boron (B).

In order to obtain different properties, the neodymium in the material can be partially replaced by other rare earth metals such as cylindrical (Dy) and aluminum (Pr), and the iron can be partially replaced by other metals such as cobalt (Co) and aluminum (Al).

The Nd2Fe1B compound has a tetragonal crystal structure, high saturation magnetization and uniaxial anisotropic field. It is the main source of the permanent magnetic properties of NdFeB permanent magnet materials.

The chemical composition range of sintered NdFeB permanent magnet materials is shown in the table below.

ComponentNdCoBDy,Tb,Pr etc.Cu, Al, Nb, Gb etc.Fe
Content (%)20~350~150.8~1.30~150~3the Remaining

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    NEO MAGNET GRADES

    Grades
    Remanence
    Coercive Force
    Intrinsic Coercive Force
    Max. Energy
    Max Working Temp.
    abbr
    Br
    HcB
    HcJ
    (BH) max
    Tw.
    Unit
    mT (KGs)
     KA/m (KOe)
     KA/m (KOe)
    KJ/m3 (MGOe)
    °C
    N35
    1170-1220 (11.7-12.2)
    ≧868 (≧10.9)
    ≧955 (≧12)
    263-287 (33-36)
    ≤80
    N38
    1220-1250 (12.2-12.5)
    ≧899 (≧11.3)
    ≧955 (≧12)
    287-310 (36-39)
    ≤80
    N40
    1250-1280 (12.5-12.8)
    ≧923 (≧11.6)
    ≧955 (≧12)
    302-326 (38-41)
    ≤80
    N42
    1280-1320 (12.8-13.2)
    ≧923 (≧11.6)
    ≧955 (≧12)
    318-342 (40-43)
    ≤80
    N45
    1320-1380 (13.2-13.8)
    ≧876 (≧11.0)
    ≧955 (≧12)
    342-366 (43-46)
    ≤80
    N48
    1380-1420 (13.8-14.2)
    ≧836 (≧10.5)
    ≧955 (≧12)
    366-390 (46-49)
    ≤80
    N50
    1400-1450 (14.0-14.5)
    ≧860 (≧10.8)
    ≧955 (≧12)
    382-406 (48-51)
    ≤80
    N52
    1440-1480 (14.4-14.8)
    ≧876 (≧10.5)
    ≧955 (≧12)
    394-414 (49.5-52)
    ≤60
    N55
    1460-1520 (14.6-15.2)
    ≧716 (≧9)
    ≧876 (≧11)
    414-446 (52-56)
    ≤60
    N30M
    1080-1130 (10.8-11.3)
    ≧796 (≧10.0)
    ≧1114 (≧14)
    223-247 (28-31)
    ≤100
    N33M
    1130-1180 (11.3-11.8)
    ≧836 (≧10.5)
    ≧1114 (≧14)
    247-270 (31-34)
    ≤100
    N35 M
    1170-1220 (11.7-12.2)
    ≧868 (≧10.9)
    ≧1114 (≧14)
    263-287 (33-36)
    ≤100
    N38M
    1220-1250 (12.2-12.5)
    ≧899 (≧11.3)
    ≧1114 (≧14)
    287-310 (36-39)
    ≤100
    N40M
    1250-1280 (12.5-12.8)
    ≧923 (≧11.6)
    ≧1114 (≧14)
    302-326 (38-41)
    ≤100
    N42M
    1280-1320 (12.8-13.2)
    ≧955 (≧12.0)
    ≧1114 (≧14)
    318-342 (40-43)
    ≤100
    N45M
    1320-1380 (13.2-13.8)
    ≧995 (≧12.5)
    ≧1114 (≧14)
    342-366 (43-46)
    ≤100
    N48M
    1360-1430 (13.6-14.3)
    ≧1027 (≧12.9)
    ≧1114 (≧14)
    366-390 (46-49)
    ≤100
    N50M
    1400-1450 (14.0-14.5)
    ≧1033 (≧13.0)
    ≧1114 (≧14)
    382-406 (48-51)
    ≤100
    N30H
    1080-1130 (10.8-11.3)
    ≧796 (≧10.0)
    ≧1353 (≧17)
    223-247 (28-31)
    ≤120
    N33H
    1130-1180 (11.3-11.8)
    ≧836 (≧10.5)
    ≧1353 (≧17)
    247-271 (31-34)
    ≤120
    N35 H
    1170-1220 (11.7-12.2)
    ≧868 (≧10.9)
    ≧1353 (≧17)
    263-287 (33-36)
    ≤120
    N38H
    1220-1250 (12.2-12.5)
    ≧899 (≧11.3)
    ≧1353 (≧17)
    287-310 (36-39)
    ≤120
    N40H
    1250-1280 (12.5-12.8)
    ≧923 (≧11.6)
    ≧1353 (≧17)
    302-326 (38-41)
    ≤120
    N42H
    1280-1320 (12.8-13.2)
    ≧955 (≧12.0)
    ≧1353 (≧17)
    318-342 (40-43)
    ≤120
    N45H
    1320-1380 (13.2-13.8)
    ≧963 (≧12.1)
    ≧1353 (≧17)
    342-366 (43-46)
    ≤120
    N48H
    1370-1430 (13.7-14.3)
    ≧995 (≧12.5)
    ≧1353 (≧17)
    366-390 (46-49)
    ≤120
    N30SH
    1080-1130 (10.8-11.3)
    ≧804 (≧10.1)
    ≧1592 (≧ 20)
    223-247 (28-31)
    ≤150
    N33SH
    1130-1170 (11.3-11.7)
    ≧844 (≧10.6)
    ≧1592 (≧ 20)
    247-271 (31-34)
    ≤150
    N35SH
    1170-1220 (11.7-12.2)
    ≧876 (≧11.0)
    ≧1592 (≧ 20)
    263-287 (33-36)
    ≤150
    N38SH
    1220-1250 (12.2-12.5)
    ≧907 (≧11.4)
    ≧1592 (≧ 20)
    287-310 (36-39)
    ≤150
    N40SH
    1240-1280 (12.5-12.8)
    ≧939 (≧11.8)
    ≧1592 (≧ 20)
    302-326 (38-41)
    ≤150
    N42SH
    1280-1320 (12.8-13.2)
    ≧995 (≧12.5)
    ≧1592 (≧ 20)
    318-342 (40-43)
    ≤150
    N45SH
    1320-1380 (13.2-13.8)
    ≧1003 (≧12.6)
    ≧1592 (≧ 20)
    342-366 (43-46)
    ≤150
    N28UH
    1020-1080 (10.2-10.8)
    ≧764 (≧ 9.6)
    ≧1990 (≧25)
    207-231 (26-29)
    ≤180
    N30UH
    1080-1130 (10.8-11.3)
    ≧812 (≧10.2)
    ≧1990 (≧25)
    223-247 (28-31)
    ≤180
    N33UH
    1130-1170 (11.3-11.7)
    ≧852 (≧10.7)
    ≧1990 (≧25)
    247-271 (31-34)
    ≤180
    N35 UH
    1180-1220 (11.8-12.2)
    ≧860 (≧10.8)
    ≧1990 (≧25)
    263-287 (33-36)
    ≤180
    N38UH
    1220-1250 (12.2-12.5)
    ≧876 (≧11.0)
    ≧1990 (≧25)
    287-310 (36-39)
    ≤180
    N40UH
    1260-1290 (12.6-12.9)
    ≧907 (≧11.4)
    ≧1990 (≧25)
    302-326 (38-41)
    ≤180
    N42UH
    1290-1330 (12.9-13.3)
    ≧907 (≧11.4)
    ≧1990 (≧25)
    318-326 (40-42)
    ≤180
    N28EH
    1040-1090 (10.4-10.9)
    ≧780 (≧9.8)
    ≧2388 (≧30)
    207-231 (26-29)
    ≤200
    N30EH
    1080-1130 (10.8-11.3)
    ≧812 (≧10.2)
    ≧2388 (≧30)
    223-247 (28-31)
    ≤200
    N33EH
    1130-1170 (11.3-11.7)
    ≧812 (≧10.2)
    ≧2388 (≧30)
    247-271 (31-34)
    ≤200
    N35EH
    1170-1220 (11.7-12.2)
    ≧876 (≧11.0)
    ≧2388 (≧30)
    263-287 (33-36)
    ≤200
    N38EH
    1220-1260 (12.2-12.6)
    ≧915 (≧11.5)
    ≧2388 (≧30)
    287-303 (36-38)
    ≤200
    N28AH
    1040-1080 (10.4-10.8)
    ≧780 (≧9.8)
    ≧2785 (≧35)
    207-223 (26-28)
    ≤220
    N30AH
    1080-1130 (10.8-11.3)
    ≧812 (≧10.2)
    ≧2785 (≧35)
    223-247 (28-31)
    ≤220
    N33AH
    1130-1170 (11.3-11.7)
    ≧812 (≧10.2)
    ≧2785 (≧35)
    247-271 (31-34)
    ≤220

    Suggestion: With the progress of technology, the magnet performance may be changed, customers should refer to the latest version of our company; in addition to the above NdFeB magnet grades, our company can also produce special performance NdFeB magnets, welcome to contact us.