Sintered ndfeb :
1) Application of NdFeB magnet: Toys, package, Printer, Switchboard, Phone, voice coil motors (VCM's) in hard disk drives, high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, loudspeakers etc.
2) The coating of NdFeB magnets can be Zn, Ni, Ni-Cu-Ni, Epoxy, CR3+ZN, NI+AG, NI+AU.
3)All sizes of ndfeb can be made.
Neodymium permanent magnets are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.
Attributes of Neodymium
Very high resistance to demagnetization
High energy for size
Good in ambient temperature
Moderately priced
Material is corrosive and should be coated for long term maximum energy output
Low working temperature for heat applications, but higher levels of heat resistance materials are being introduced periodically.
Product performance
Neodymium permanent magnets are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.
Attributes of Neodymium
Very high resistance to demagnetization
High energy for size
Good in ambient temperature
Moderately priced
Material is corrosive and should be coated for long term maximum energy output
Low working temperature for heat applications, but higher levels of heat resistance materials are being introduced periodically.
Product performance
| Grade | Max. Energy Product | Remanence | Coercive Force | Rev. Temp. Coeff. | Curie Temp. | Working Temp. | ||||||
| (BH)max | Br | Hc | Hci | Bd | Hd | Tc | Tw | |||||
| MGOe | kJ/m3 | kG | mT | kOe | kA/m | kOe | kA/m | %/oC | %/oC | oC | oC | |
| N33 | 31-33 | 247-263 | 11.30-11.70 | 1130-1170 | >10.5 | >836 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N35 | 33-36 | 263-287 | 11.70-12.10 | 1170-1210 | >10.9 | >868 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N38 | 36-39 | 287-310 | 12.10-12.50 | 1210-1250 | >11.3 | >899 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N40 | 38-41 | 302-326 | 12.50-12.80 | 1250-1280 | >11.6 | >923 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N42 | 40-43 | 318-342 | 12.80-1320 | 1280-1320 | >11.6 | >923 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N45 | 43-46 | 342-366 | 13.20-13.80 | 1320-1380 | >11.0 | >876 | >12 | >955 | -0.12 | -0.60 | 310 | 80 |
| N48 | 46-49 | 366-390 | 13.80-14.20 | 1380-1420 | >10.5 | >835 | >11 | >876 | -0.12 | -0.60 | 310 | 80 |
| N30M | 28-32 | 223-255 | 10.90-11.70 | 1090-1170 | >10.2 | >812 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N33M | 31-35 | 247-279 | 11.40-12.20 | 1140-1220 | >10.7 | >851 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N35M | 33-37 | 263-294 | 11.80-12.50 | 1180-1250 | >11.0 | >875 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N38M | 36-40 | 286-318 | 12.30-13.00 | 1230-1300 | >11.5 | >915 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N40M | 38-42 | 302-334 | 12.60-13.20 | 1260-1320 | >11.8 | >939 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N42M | 40-44 | 318-350 | 13.00-13.50 | 1300-1350 | >12.0 | >955 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N45M | 42-46 | 334-366 | 13.20-13.80 | 1320-1380 | >12.2 | >971 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N33H | 31-34 | 247-271 | 11.30-11.70 | 1130-1170 | >10.5 | >836 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N35H | 33-36 | 263-287 | 11.70-12.10 | 1170-1210 | >10.9 | >868 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N38H | 36-39 | 287-310 | 12.10-12.50 | 1210-1250 | >11.3 | >899 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N40H | 38-41 | 302-326 | 12.40-12.80 | 1240-1280 | >11.6 | >923 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N42H | 40-43 | 318-342 | 12.80-13.20 | 1280-1320 | >12.0 | >955 | >17 | >1360 | -0.11 | -0.58 | 320-350 | 120 |
| N33SH | 31-34 | 247-272 | 11.30-11.70 | 1130-1170 | >10.6 | >844 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N35SH | 33-36 | 263-287 | 11.70-12.10 | 1170-1210 | >11.0 | >876 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N38SH | 36-39 | 287-310 | 12.10-12.50 | 1210-1250 | >11.4 | >907 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N40SH | 38-41 | 302-326 | 12.10-12.80 | 1240-1280 | >11.8 | >939 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N28UH | 26-29 | 207-231 | 10.20-10.80 | 1020-1080 | >9.6 | >768 | >25 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
| N30UH | 28-31 | 223-247 | 10.80-11.30 | 1080-1130 | >10.2 | >816 | >25 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
| N33UH | 31-34 | 247-271 | 11.30-11.70 | 1130-1170 | >10.7 | >856 | >25 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
| N28EH | 26-29 | 211-236 | 10.40-10.90 | 1040-1090 | >9.8 | >784 | >30 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
| N30EH | 28-31 | 223-247 | 10.80-11.30 | 1080-1130 | >10.2 | >812 | >30 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
