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Neodymium Magnets, also known as NdFeB or simply Neo, are the most commonly used magnet materials for high tech motors and sensors. After being introduced in the mid 1980’s they have rapidly gained market share due to their high magnetic strength and resistance to demagnetization. They do not have the high temperature resistance of other magnet materials, however they can be used in applications with maximum operating temperatures of 220 C. Because of a high iron content, they will corrode over time if not plated or coated. As with all magnet materials, NdFeB should never be used as a structural element in an application.

Neodymium Magnets Slider

Alliance NdFeB GradesRemanent
Induction
Coercive
Force
Intrinsic
Coercive Force
Maximum
Energy Product
Reversible
Temperature Coefficients
Continuous
Working Temp.
Br (Gauss)Hc
(Oe)
Hci
(Oe)
(BH)max
(MGOe)
α
Br
ß
Hcj
Tw
(°C)
MinMaxMinMaxMinMaxMinMax%/°C%/°CMax
N5514,60015,00010,80012,80011,00018,00052.056.0-0.11-0.6870
N5314,30014,80010,70012,70012,00018,00051.054.0-0.12-0.6570
N5214,20014,80010,50012,50012,00018,00050.053.0-0.12-0.6580
N5014,00014,50010,50012,50012,00018,00048.051.0-0.12-0.6580
N4813,60014,20010,50012,50012,00018,00046.049.0-0.12-0.6580
N4513,30013,70010,50012,50012,00018,00043.046.0-0.12-0.6580
N4212,90013,30010,50012,50012,00018,00040.043.0-0.12-0.6580
N4012,60012,90010,80012,80012,00018,00038.041.0-0.12-0.6580
N3812,20012,60010,80012,80012,00018,00035.039.0-0.12-0.6580
N3511,70012,20010,80012,80012,00018,00033.036.0-0.12-0.6580
N3311,40011,70010,80012,80012,00018,00030.034.0-0.12-0.6580
N3010,80011,40010,80012,80012,00018,00028.031.0-0.12-0.6580
N52M14,50014,80012,80014,80014,00020,00050.052.0-0.12-0.65100
N50M13,90014,50013,20015,20014,00020,00048.051.0-0.12-0.65100
N48M13,70014,10012,80014,80014,00020,00045.049.0-0.12-0.65100
N45M13,30013,70012,40014,40014,00020,00042.046.0-0.12-0.65100
N42M12,90013,30012,00014,00014,00020,00040.043.0-0.12-0.65100
N40M12,60012,90011,80013,80014,00020,00038.041.0-0.12-0.65100
N38M12,20012,60011,50013,50014,00020,00035.039.0-0.12-0.65100
N35M11,70012,20011,00013,00014,00020,00033.036.0-0.12-0.65100
N33M11,40011,70010,70014,70014,00020,00030.034.0-0.12-0.65100
N30M10,80011,40010,20014,20014,00020,00028.031.0-0.12-0.65100
N50H14,10014,50013,00015,00017,00025,00048.050.0-0.11-0.58120
N48H13,70014,10012,70014,70017,00025,00045.048.0-0.11-0.58120
N45H13,30013,70012,20014,20017,00025,00042.046.0-0.11-0.58120
N42H12,90013,30012,00014,00017,00025,00040.043.0-0.11-0.58120
N40H12,60012,90011,80013,80017,00025,00038.041.0-0.11-0.62120
H38H12,20012,60011,50013,50017,00025,00035.039.0-0.11-0.62120
N35H11,70012,20011,00013,00017,00025,00033.036.0-0.11-0.62120
N33H11,40011,70010,50012,50017,00025,00030.034.0-0.11-0.62120
N30H10,80011,40010,00012,00017,00025,00028.031.0-0.11-0.62120
N50SH13,90014,30013,00015,00020,00028,00047.050.0-0.11-0.60150
N48SH13,70014,10012,70014,70020,00028,00046.049.0-0.11-0.60150
N46SH13,50013,70012,50014,50020,00028,00044.047.0-0.11-0.60150
N44SH13,20013,50012,30014,30020,00028,00042.045.0-0.11-0.60150
N42SH12,90013,20012,10014,10020,00028,00040.043.0-0.11-0.60150
N40SH12,60012,90011,70013,70020,00028,00038.041.0-0.11-0.60150
N38SH12,20012,60011,30013,30020,00028,00036.039.0-0.11-0.60150
N35SH11,70012,20011,00012,00020,00028,00033.037.0-0.11-0.60150
N33SH11,40011,70010,70012,70020,00028,00031.034.0-0.11-0.60150
N30SH10,80011,40010,20012,20020,00028,00028.032.0-0.11-0.60150
N48UH13,70014,10012,70014,70025,00032,00046.049.0-0.10-0.55180
N46UH13,50013,70012,50014,50025,00032,00044.047.0-0.10-0.55180
N44UH13,30013,50012,30014,30025,00032,00042.045.0-0.10-0.55180
N42UH12,90013,30012,20014,20025,00032,00040.043.0-0.10-0.50180
N40UH12,60013,20011,80013,80025,00032,00038.041.0-0.10-0.55180
N38UH12,20012,60011,50013,50025,00032,00036.039.0-0.10-0.55180
N35UH11,70012,20011,00013,00025,00032,00033.036.0-0.10-0.55180
N33UH11,40011,70010,70012,70025,00032,00031.034.0-0.10-0.55180
N30UH10,80011,40010,20012,20025,00032,00028.031.0-0.10-0.50180
N45EH13,10013,70012,20014,20029,00036,00042.046.0-0.09-0.50200
N42EH12,90013,30012,20014,20030,00036,00040.043.0-0.09-0.50200
N40EH12,60012,90011,80013,80030,00036,00038.041.0-0.09-0.50200
N38EH12,20012,70011,40013,40030,00036,00036.039.0-0.09-0.50200
N35EH11,70012,50011,00013,00030,00036,00033.037.0-0.09-0.50200
N33EH11,40011,70010,70012,70030,00036,00031.034.0-0.09-0.50200
N30EH10,80011,40010,20012,20030,00036,00028.031.0-0.09-0.50200
N38AH12,20012,60011,60013,60035,00042,00035.039.0-0.09-0.45220
N35AH11,70012,20011,10013,10035,00042,00032.036.0-0.09-0.45220
N32AH11,30011,70010,70012,70035,00042,00030.033.0-0.09-0.45220
Alliance NdFeB GradesDensityTensile
Strength
Modulus
of Elasticity
Thermal
Expansion Coefficient /°C
Electrical
Resistivity
Curie    Temp
g/cm3lbs/in3psiPa
x 106
psi
x 106
Pa
x 109
ǁ
to M

to M
Ω-cm x10-6@ 20 C°C 
N55>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N53>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N52>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N50>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N48>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N45>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35>7.4>0.26812,00083221523.4x10-6-4.8x10-6160.0310
N33>7.4>0.26812,00083221523.4x10-6-4.8x10-6160.0310
N30>7.4>0.26812,00083221523.4x10-6-4.8x10-6160.0310
N52M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N50M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N48M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N45M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N33M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N30M>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N50H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N48H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N45H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
H38H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N33H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N30H>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N50SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N48SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N46SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N44SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N33SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N30SH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N48UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N46UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N44UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N33UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N30UH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N45EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N42EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N40EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N33EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N30EH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N38AH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N35AH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310
N32AH>7.5>0.27112,00083221523.4x10-6-4.8x10-6160.0310

Neo Magnets Grade Comparison

Neo Magnets Curve Comparisons

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