Sintered ndfeb magnet,are composed of neodymium, iron, boronand a few transition metals.
These magnets are extremely strong for their small size, metallic inappearance and found in simple shapes such as rings, blocks anddiscs.
- Dimension and size: with customrequirement (from 0.1mm to 100mm)
- Coating: Zinc , Ni-Ci-Ni, Nickel, Epoxy,Au, and so on
- shaped : Ring ,Block, Disc, Arc, segment, cylinder, andspecial size. etc
- 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 energyoutput
- Low working temperature for heat applications, but higher levels of heatresistance materials are being introduced periodically.
- Magnetic properties of Neodymiummagnets
Grade Br Hcb Hcj (BH)max Density Curie Temp Working Temp mT kGs kA/m kOe kA/m kOe kJ/m3 MGOe g/cm3 ℃ ℃ N35 1180-1230 11800-12300 ≥868≥10900 ≥955 ≥12000 263-287 33-36 7.45 310 ≤80 N38 1220-1280 12200-12800 ≥899 ≥11300 ≥955 ≥12000 287-310 36-39 N40 1250-1310 12600-13100 ≥923 ≥11600 ≥955 ≥12000 302-326 38-41 N42 1280-1340 12800-13400 ≥923 ≥11600 ≥955 ≥12000 318-342 40-43 N45 1320-1370 13200-13700 ≥876 ≥11000 ≥955 ≥12000 342-366 43-46 N48 1380-1420 13600-14200 ≥836 ≥10500 ≥876 ≥11000 358-390 45-48 N50 1400-1450 13900-14500 ≥836 ≥10500 ≥876 ≥11000 374-406 47-51 N52 1430-1480 14200-14800 ≥796 ≥10000 ≥876 ≥11000 390-422 49-53 N35M 1180-1230 11800-12300 ≥868 ≥10900 ≥1114 ≥14000 263-287 33-36 ≤100 N38M 1220-1280 12200-12800 ≥899 ≥11300 ≥1114 ≥14000 287-310 36-39 N40M 1260-1310 12600-13100 ≥923 ≥11600 ≥1114 ≥14000 302-326 38-41 N42M 1280-1340 12800-13400 ≥923 ≥11600 ≥1114 ≥14000 318-342 40-43 N45M 1340-1390 13400-13900 ≥876 ≥11000 ≥1114 ≥14000 342-366 43-46 N48M 1360-1420 13600-14200 ≥876 ≥11000 ≥1114 ≥14000 366-390 46-49 N35H 1180-1230 11800-12300 ≥868 ≥10900 ≥1353 ≥17000 263-287 33-36 ≤120 N38H 1220-1280 12200-12800 ≥899 ≥11300 ≥1353 ≥17000 287-310 36-39 N40H 1260-1310 12600-13100 ≥923 ≥11600 ≥1353 ≥17000 302-326 38-41 N42H 1280-1340 12800-13400 ≥923 ≥11600 ≥1353 ≥17000 318-342 40-43 N45H 1330-1390 13300-13900 ≥923 ≥11600 ≥1353 ≥17000 342-366 43-46 N48H 1360-1420 13600-14200 ≥923 ≥11600 ≥1274 ≥16000 366-390 46-49 N33SH 1140-1190 11400-11900 ≥836 ≥10500 ≥1592 ≥20000 247-270 31-34 ≤150 N35SH 1180-1230 11800-12300 ≥868 ≥10900 ≥1592 ≥20000 263-287 33-36 N38SH 1220-1280 12200-12800 ≥899 ≥11300 ≥1592 ≥20000 287-310 36-39 N40SH 1260-1310 12600-13100 ≥923 ≥11600 ≥1592 ≥20000 302-326 38-41 N42SH 1280-1340 12800-13400 ≥923 ≥11600 ≥1592 ≥20000 318-342 40-43 N45SH 1330-1390 13300-13900 ≥923 ≥11600 ≥1592 ≥20000 342-366 43-46 N28UH 1030-1090 10300-10900 ≥780 ≥9800 ≥1990 ≥25000 207-231 26-29 ≤180 N30UH 1090-1140 10900-11400 ≥812 ≥10200 ≥1990 ≥25000 223-247 28-31 N33UH 1130-1170 11300-11700 ≥852 ≥10700 ≥1990 ≥25000 247-263 31-33 N35UH 1180-1220 11800-12200 ≥868 ≥10900 ≥1990 ≥25000 263-287 33-36 N38UH 1220-1270 12200-12700 ≥899 ≥11300 ≥1990 ≥25000 287-310 36-39 N28EH 1030-1090 10300-10900 ≥780 ≥9800 ≥2388 ≥30000 207-231 26-29 ≤200 N30EH 1080-1130 10800-11300 ≥812 ≥10200 ≥2388 ≥30000 223-247 28-31 N33EH 1130-1170 11300-11700 ≥852 ≥10700 ≥2388 ≥30000 247-263 31-33 N35EH 1180-1220 11800-12200 ≥868 ≥10900 ≥2388 ≥30000 263-287 33-36