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Sintered Neodymium-Iron-Boron (NdFeB) magnets, also knewn as “Neo” magnets, offer the strongest magnetic power today. They are particularly suitable for high volume production with varieties of shapes and sizes. Precise dimensional control can be achieved in machining processes.
1. Motors, Generators, Sensors, Speakers, Earphones and other musical instruments, Magnetic therapy devices, Magnetic Chuck, Magnetic bearings and couplings, NdFeB Pot Magnet and other magnetic applications.

2. N35-N52, N35M-N50M, N35H-N48H, N35SH-N45SH, N28UH-N42UH, N28EH-N40EH, N28AH-N38AH.
| Grade | Residual Induction (Br) | Coercive Force (Hcb) | Intrinsic Coercive Force (Hcj) | Max Energy Product (BH)max | Max Working Temp. | ||||
| T | kGs | kA/m | kOe | kA/m | kOe | Kj/m³ | MGOe | (°C) | |
| N35 | 1.17-1.22 | 11.7-12.2 | ≥ 868 | ≥ 10.9 | ≥ 955 | ≥ 12 | 263-287 | 33-36 | 80 |
| N38 | 1.22-1.25 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 955 | ≥ 12 | 287-310 | 36-39 | 80 |
| N40 | 1.25-1.28 | 12.5-12.8 | ≥ 907 | ≥ 11.4 | ≥ 955 | ≥ 12 | 302-326 | 38-41 | 80 |
| N42 | 1.28-1.32 | 12.8-13.2 | ≥ 915 | ≥ 11.5 | ≥ 955 | ≥ 12 | 318-342 | 40-43 | 80 |
| N45 | 1.32-1.38 | 13.2-13.8 | ≥ 923 | ≥ 11.6 | ≥ 955 | ≥ 12 | 342-366 | 43-46 | 80 |
| N48 | 1.38-1.42 | 13.8-14.2 | ≥ 923 | ≥ 11.6 | ≥ 955 | ≥ 12 | 366-390 | 46-49 | 80 |
| N50 | 1.40-1.45 | 14.0-14.5 | ≥ 796 | ≥ 10 | ≥ 876 | ≥ 11 | 374-406 | 47-51 | 60 |
| N52 | 1.43-1.48 | 14.3-14.8 | ≥ 796 | ≥ 10 | ≥ 876 | ≥ 11 | 390-422 | 49-53 | 60 |
| N35M | 1.17-1.22 | 11.7-12.2 | ≥ 868 | ≥ 10.9 | ≥ 1114 | ≥ 14 | 263-287 | 33-36 | 100 |
| N38M | 1.22-1.25 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 1114 | ≥ 14 | 287-310 | 36-39 | 100 |
| N40M | 1.25-1.28 | 12.5-12.8 | ≥ 923 | ≥ 11.6 | ≥ 1114 | ≥ 14 | 302-326 | 38-41 | 100 |
| N42M | 1.28-1.32 | 12.8-13.2 | ≥ 955 | ≥ 12 | ≥ 1114 | ≥ 14 | 318-342 | 40-43 | 100 |
| N45M | 1.32-1.38 | 13.2-13.8 | ≥ 955 | ≥ 12.5 | ≥ 1114 | ≥ 14 | 342-366 | 43-46 | 100 |
| N48M | 1.37-1.43 | 13.7-14.3 | ≥ 1027 | ≥ 12.9 | ≥ 1114 | ≥ 14 | 366-390 | 46-49 | 100 |
| N50M | 1.40-1.45 | 14.0-14.5 | ≥ 1033 | ≥ 13 | ≥ 1114 | ≥ 14 | 382-406 | 48-51 | 100 |
| N35H | 1.17-1.22 | 11.7-12.2 | ≥ 868 | ≥ 10.9 | ≥ 1353 | ≥ 17 | 263-287 | 33-36 | 120 |
| N38H | 1.22-1.25 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 1353 | ≥ 17 | 287-310 | 36-39 | 120 |
| N40H | 1.25-1.28 | 12.5-12.8 | ≥ 923 | ≥ 11.6 | ≥ 1353 | ≥ 17 | 302-326 | 38-41 | 120 |
| N42H | 1.28-1.32 | 12.8-13.2 | ≥ 955 | ≥ 12 | ≥ 1353 | ≥ 17 | 318-342 | 40-43 | 120 |
| N45H | 1.32-1.36 | 13.2-13.6 | ≥ 963 | ≥ 12.1 | ≥ 1353 | ≥ 17 | 326-358 | 43-46 | 120 |
| N48H | 1.37-1.43 | 13.7-14.3 | ≥ 995 | 12.5 | ≥ 1353 | ≥ 17 | 366-390 | 46-49 | 120 |
| N35SH | 1.17-1.22 | 11.7-12.2 | ≥ 876 | ≥ 11 | ≥ 1592 | ≥ 20 | 263-287 | 33-36 | 150 |
| N38SH | 1.22-1.25 | 12.2-12.5 | ≥ 907 | ≥ 11.4 | ≥ 1592 | ≥ 20 | 287-310 | 36-39 | 150 |
| N40SH | 1.25-1.28 | 12.5-12.8 | ≥ 939 | ≥ 11.8 | ≥ 1592 | ≥ 20 | 302-326 | 38-41 | 150 |
| N42SH | 1.28-1.32 | 12.8-13.2 | ≥ 987 | ≥ 12.4 | ≥ 1592 | ≥ 20 | 318-342 | 40-43 | 150 |
| N45SH | 1.32-1.38 | 13.2-13.8 | ≥ 1003 | ≥ 12.6 | ≥ 1592 | ≥ 20 | 342-366 | 43-46 | 150 |
| N28UH | 1.04-108 | 10.4-10.8 | ≥ 764 | ≥ 9.6 | ≥ 1990 | ≥ 25 | 207-231 | 26-29 | 180 |
| N30UH | 1.08-1.13 | 10.8-11.3 | ≥ 812 | ≥ 10.2 | ≥ 1990 | ≥ 25 | 223-247 | 28-31 | 180 |
| N33UH | 1.13-1.17 | 11.3-11.7 | ≥ 852 | ≥ 10.7 | ≥ 1990 | ≥ 25 | 247-271 | 31-34 | 180 |
| N35UH | 1.17-1.22 | 11.7-12.2 | ≥ 860 | ≥ 10.8 | ≥ 1990 | ≥ 25 | 263-287 | 33-36 | 180 |
| N38UH | 1.22-1.25 | 12.2-12.5 | ≥ 876 | ≥ 11 | ≥ 1990 | ≥ 25 | 287-310 | 36-39 | 180 |
| N40UH | 1.25-1.28 | 12.5-12.8 | ≥ 899 | ≥ 11.3 | ≥ 1990 | ≥ 25 | 302-326 | 38-41 | 180 |
| N42UH | 1.28-1.32 | 12.8-13.2 | ≥ 899 | ≥ 11.3 | ≥ 1990 | ≥ 25 | 318-342 | 40-43 | 180 |
| N28EH | 1.04-1.08 | 10.4-10.8 | ≥ 780 | ≥ 9.8 | ≥ 2388 | ≥ 30 | 207-231 | 26-29 | 200 |
| N30EH | 1.08-1.13 | 10.8-11.3 | ≥ 812 | ≥ 10.2 | ≥ 2388 | ≥ 30 | 223-247 | 28-31 | 200 |
| N33EH | 1.13-1.17 | 11.3-11.7 | ≥ 836 | ≥ 10.5 | ≥ 2388 | ≥ 30 | 247-271 | 31-34 | 200 |
| N35EH | 1.17-1.22 | 11.7-12.2 | ≥ 876 | ≥ 11 | ≥ 2388 | ≥ 30 | 263-287 | 33-36 | 200 |
| N38EH | 1.22-1.25 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 2388 | ≥ 30 | 287-310 | 36-39 | 200 |
| N40EH | 1.25-1.28 | 12.5-12.8 | ≥ 899 | ≥ 11.3 | ≥ 2388 | ≥ 30 | 302-326 | 38-41 | 200 |
| N28AH | 1.04-1.08 | 10.4-10.8 | ≥ 787 | ≥ 9.9 | ≥ 2624 | ≥ 33 | 207-231 | 26-29 | 230 |
| N30AH | 1.08-1.13 | 10.8-11.3 | ≥ 819 | 10.3 | ≥ 2624 | ≥ 33 | 223-247 | 28-31 | 230 |
| N33AH | 1.13-1.17 | 11.3-11.7 | ≥ 843 | ≥ 10.6 | ≥ 2624 | ≥ 33 | 247-271 | 31-34 | 230 |
| N35AH | 1.17-1.22 | 11.7-12.2 | ≥ 876 | ≥ 11 | ≥ 2624 | ≥ 33 | 263-287 | 33-36 | 230 |
| N38AH | 1.22-1.25 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 2624 | ≥ 33 | 287-310 | 36-39 | 230 |

3. Disc Magnet, Ring, Block, Segment, Cylinder Magnet, Trapezoid, Customized Design.
4. Ni, Ni-Cu-Ni, Zn(Cr3+), Tin, Epoxy, Ni-Ag, Ni-Au, Passivation, Parylene, etc.
5. Customized size as per your requirements.
6. ISO9001:2008, ISO/TS16949:2009 and RoHS.
7. Production Flow:




SDM Magnetics has been supplying magnetic materials since 2004. We are located in Hangzhou, which is about 200 kilometers from Shanghai and Ningbo.
Our products are export to American, European and Asian countries. Our customers include motor manufacturers, industries equipments producers and so on. We are a supplier of Siemens Ltd Australia, GM, BMW, BENTLEY, and REGAL BELOIT in European.
Quality assurance from SDM: ISO9001, ISO14001, TS16949.
Products: NdFeB, SmCo, AlNiCo permanent magnets and assemblies; Bonded NdFeB and Ferrite magnets.
SDM & Our Customers!

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