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Neodymium (NdFeB) Magnet Material Specs & Technical Data

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Neodymium (NdFeB) magnets are rare earth–based transition metal alloys that offer the highest energy products of all commercially available permanent magnet materials. Their intrinsic coercivities typically range from approximately 12 kOe up to 35 kOe, enabling compact designs with high magnetic performance. As a result, many applications that historically relied on Alnico or ceramic magnets now utilize neodymium magnets to achieve greater efficiency, strength, and design flexibility.

Please refer to the table below for sintered NdFeB materials specs. Click any grade to view its demagnetization (B-H) curve.

Download Sintered NdFeB Materials Chart (PDF) – Click here

Need more information about magnetic materials and how magnets are designated?

Read our blog article — Understanding Magnet Grades & Magnet Tables

Grade Remanence Coercivity Max Energy Product Temperature Coefficient Max
Working
Temperature
Br HcB HcJ (BH)max α(Br) β(HcJ) TwMax
T kGs kA/m kOe kA/m kOe kJ/m³ MGOe %/°C %/°C °C
Standard — N Grades
N35 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥955 ≥12 263-287 33-36 -0.12 -0.6 80
N38 1.22-1.26 12.2-12.6 ≥899 ≥11.3 ≥955 ≥12 287-310 36-39 -0.12 -0.6 80
N40 1.26-1.29 12.6-12.9 ≥907 ≥11.4 ≥955 ≥12 302-326 38-41 -0.12 -0.6 80
N42 1.29-1.33 12.9-13.3 ≥915 ≥11.5 ≥955 ≥12 318-342 40-43 -0.12 -0.6 80
N45 1.33-1.37 13.3-13.7 ≥915 ≥11.5 ≥955 ≥12 342-366 43-46 -0.12 -0.6 80
N48 1.37-1.40 13.7-14.0 ≥876 ≥11.0 ≥955 ≥12 358-390 45-49 -0.12 -0.6 80
N50 1.39-1.42 13.9-14.2 ≥836 ≥10.5 ≥955 ≥12 374-406 47-51 -0.12 -0.6 80
N52 1.42-1.45 14.2-14.5 ≥836 ≥10.5 ≥955 ≥12 382-414 48-52 -0.12 -0.6 80
N54 1.44-1.47 14.4-14.7 ≥796 ≥10.0 ≥875 ≥11 398-422 50-53 -0.12 -0.6 60
N56 1.46-1.50 14.6-15.0 ≥796 ≥10.0 ≥875 ≥11 406-438 51-55 -0.12 -0.6 60
M Grades
N35M 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1114 ≥14 263-287 33-36 -0.11 -0.6 100
N38M 1.22-1.26 12.2-12.6 ≥899 ≥11.3 ≥1114 ≥14 287-310 36-39 -0.11 -0.6 100
N40M 1.26-1.29 12.6-12.9 ≥923 ≥11.6 ≥1114 ≥14 302-326 38-41 -0.11 -0.6 100
N42M 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥1114 ≥14 318-342 40-43 -0.11 -0.6 100
N45M 1.33-1.37 13.3-13.7 ≥995 ≥12.5 ≥1114 ≥14 342-366 43-46 -0.11 -0.6 100
N48M 1.37-1.40 13.7-14.0 ≥1035 ≥13.0 ≥1114 ≥14 358-390 45-49 -0.11 -0.6 100
N50M 1.39-1.42 13.9-14.2 ≥1035 ≥13.0 ≥1114 ≥14 374-406 47-51 -0.11 -0.6 100
N52M 1.42-1.45 14.2-14.5 ≥1035 ≥13.0 ≥1114 ≥14 382-414 48-52 -0.11 -0.6 100
N54M 1.44-1.47 14.4-14.7 ≥1035 ≥13.0 ≥1114 ≥14 398-422 50-53 -0.11 -0.6 100
H Grades
N35H 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1353 ≥17 263-287 33-36 -0.11 -0.58 120
N38H 1.22-1.26 12.2-12.6 ≥899 ≥11.3 ≥1353 ≥17 287-310 36-39 -0.11 -0.58 120
N40H 1.26-1.29 12.6-12.9 ≥923 ≥11.6 ≥1353 ≥17 302-326 38-41 -0.11 -0.58 120
N42H 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥1353 ≥17 318-342 40-43 -0.11 -0.58 120
N45H 1.33-1.37 13.3-13.7 ≥971 ≥12.2 ≥1353 ≥17 342-366 43-46 -0.11 -0.58 120
N48H 1.37-1.40 13.7-14.0 ≥995 ≥12.5 ≥1353 ≥17 358-390 45-49 -0.11 -0.58 120
N50H 1.39-1.42 13.9-14.2 ≥1035 ≥13.0 ≥1353 ≥17 374-406 47-51 -0.11 -0.58 120
N52H 1.42-1.45 14.2-14.5 ≥1035 ≥13.3 ≥1353 ≥17 382-414 48-52 -0.11 -0.58 120
N54H 1.44-1.47 14.4-14.7 ≥1035 ≥13.5 ≥1353 ≥17 398-422 50-53 -0.11 -0.58 120
SH Grades
N35SH 1.17-1.22 11.7-12.2 ≥876 ≥11.0 ≥1592 ≥20 263-287 33-36 -0.11 -0.55 150
N38SH 1.22-1.26 12.2-12.6 ≥907 ≥11.4 ≥1592 ≥20 287-310 36-39 -0.11 -0.55 150
N40SH 1.26-1.29 12.6-12.9 ≥939 ≥11.8 ≥1592 ≥20 302-326 38-41 -0.11 -0.55 150
N42SH 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥1592 ≥20 318-342 40-43 -0.11 -0.55 150
N45SH 1.33-1.37 13.3-13.7 ≥995 ≥12.5 ≥1592 ≥20 342-366 43-46 -0.11 -0.55 150
N48SH 1.37-1.40 13.7-14.0 ≥995 ≥12.5 ≥1592 ≥20 358-390 45-49 -0.11 -0.55 150
N50SH 1.39-1.42 13.9-14.2 ≥1035 ≥13.0 ≥1592 ≥20 374-406 47-51 -0.11 -0.55 150
N52SH 1.42-1.45 14.2-14.5 ≥1035 ≥13.3 ≥1512 ≥19 382-414 48-52 -0.11 -0.55 150
N54SH 1.44-1.47 14.4-14.7 ≥1035 ≥13.5 ≥1592 ≥20 398-422 50-53 -0.11 -0.55 150
UH Grades
N35UH 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥1990 ≥25 263-287 33-36 -0.1 -0.5 180
N38UH 1.22-1.26 12.2-12.6 ≥876 ≥11.0 ≥1990 ≥25 287-310 36-39 -0.1 -0.5 180
N40UH 1.26-1.29 12.6-12.9 ≥915 ≥11.5 ≥1990 ≥25 302-326 38-41 -0.1 -0.5 180
N42UH 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥1990 ≥25 318-342 40-43 -0.1 -0.5 180
N45UH 1.33-1.37 13.3-13.7 ≥995 ≥12.5 ≥1990 ≥25 342-366 43-46 -0.1 -0.5 180
N48UH 1.37-1.40 13.7-14.0 ≥995 ≥12.5 ≥1910 ≥24 358-390 45-49 -0.1 -0.5 180
N50UH 1.39-1.42 13.9-14.2 ≥1035 ≥13.0 ≥1990 ≥25 374-406 47-51 -0.1 -0.5 180
N52UH 1.42-1.45 14.2-14.5 ≥1058 ≥13.3 ≥1990 ≥25 382-414 48-52 -0.1 -0.5 180
EH Grades
N35EH 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥2388 ≥30 263-287 33-36 -0.1 -0.5 200
N38EH 1.22-1.26 12.2-12.6 ≥876 ≥11.0 ≥2388 ≥30 287-310 36-39 -0.1 -0.5 200
N40EH 1.26-1.29 12.6-12.9 ≥915 ≥11.5 ≥2388 ≥30 302-326 38-41 -0.1 -0.5 200
N42EH 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥2388 ≥30 318-342 40-43 -0.1 -0.5 200
N45EH 1.33-1.37 13.3-13.7 ≥995 ≥12.5 ≥2308 ≥29 342-366 43-46 -0.1 -0.5 200
N48EH 1.37-1.40 13.7-14.0 ≥995 ≥12.5 ≥2388 ≥30 358-390 45-49 -0.1 -0.5 200
N50EH 1.39-1.42 13.9-14.2 ≥1035 ≥13.0 ≥2388 ≥29 374-406 47-51 -0.1 -0.5 200
AH Grades
N35AH 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥2786 ≥35 263-287 33-36 -0.1 -0.5 220
N38AH 1.22-1.26 12.2-12.6 ≥876 ≥11.0 ≥2786 ≥35 287-310 36-39 -0.1 -0.5 220
N40AH 1.26-1.29 12.6-12.9 ≥915 ≥11.5 ≥2706 ≥34 302-326 38-41 -0.1 -0.5 220
N42AH 1.29-1.33 12.9-13.3 ≥955 ≥12.0 ≥2786 ≥35 318-342 40-43 -0.1 -0.5 220
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