- Neodymium magnets are the most powerful commercially produced magnets.
- NdFeB magnets have a higher Maximum Energy Product, (BH).max, which caneasily reach 30 MGOe and even goes up to 50 MGOe.
- Very high strength.
- Relatively low cost.
- Compared to Alnico and SmCo magnets, relatively easy to machine.
Quick Leads
- Manufacturing process - sintering (most common), injection molding, andcompression bonding.
- Shapes available - blocks, bars, discs, rings, cylinders, arc segments, orirregular shapes, etc.
- Wide range of Grades available- from about 3330 to 5311. (First 2 digitsrepresent BH.max, and second two digits represent Intrinsic Coercivity, Hci.)
- Density: 7.4 -7.6 g/ cm3; Hardness: 600 {Hv}
- Some particular gradescan achieve 200°c the max working temperature.
- Saturation magnetizing field required - about 35kOe
- Machining - Neodymium magnets should be machined by grinding using diamondwheels, however, of the hard magnet materials, Neodymium magnets are the leastdifficult to machine. We can successfully machine very small magnets.
Property sheet
Grade | (BH)max KJ/m3(MGOe) | Br mT(KGs) | Hcj KA/m(KOe) | Max Working Temp(°C) |
N35 | 263-287(33-36) | 1170-1220(11.7-12.2) | >=955(>=12) | =<80 |
N38 | 287-310(36-39) | 1220-1250(12.2-12.5) | >=955(>=12) | =<80 |
N40 | 302-326(38-41) | 1250-1280(12.5-12.8) | >=955(>=12) | =<80 |
N42 | 318-342(40-43) | 1280-1320(12.8-13.2) | >=955(>=12) | =<80 |
N45 | 342-366(43-46) | 1320-1380(13.2-13.8) | >=955(>=12) | =<80 |
N48 | 366-390(46-49) | 1380-1420(13.8-14.2) | >=876(>=11) | =<80 |
N50 | 382-406(48-51) | 1400-1450(14.0-14.5) | >=876(>=11) | =<60 |
N52 | 398-422(50-53) | 1430-1480(14.3-14.8) | >=876(>=11) | =<60 |
N35M | 263-287(33-36) | 1170-1220(11.7-12.2) | >=1114(>=14) | =<100 |
N38M | 287-310(36-39) | 1220-1250(12.2-12.5) | >=1114(>=14) | =<100 |
N40M | 302-326(38-41) | 1250-1280(12.5-12.8) | >=1114(>=14) | =<100 |
N42M | 318-342(40-43) | 1280-1320(12.8-13.2) | >=1114(>=14) | =<100 |
N45M | 342-366(43-46) | 1320-1380(13.2-13.8) | >=1114(>=14) | =<100 |
N48M | 366-390(46-49) | 1380-1420(13.8-14.2) | >=1114(>=14) | =<100 |
N50M | 382-406(48-51) | 1400-1450(14.0-14.5) | >=1114(>=14) | =<100 |
N35H | 263-287(33-36) | 1170-1220(11.7-12.2) | >=1353(>=17) | =<120 |
N38H | 287-310(36-39) | 1220-1250(12.2-12.5) | >=1353(>=17) | =<120 |
N40H | 302-326(38-41) | 1250-1280(12.5-12.8) | >=1353(>=17) | =<120 |
N42H | 318-342(40-43) | 1280-1320(12.8-13.2) | >=1353(>=17) | =<120 |
N45H | 342-366(43-46) | 1320-1380(13.2-13.8) | >=1353(>=17) | =<120 |
N48H | 366-390(46-49) | 1380-1420(13.8-14.2) | >=1353(>=17) | =<120 |
N35SH | 263-287(33-36) | 1170-1220(11.7-12.2) | >=1592(>=20) | =<150 |
N38SH | 287-310(36-39) | 1220-1250(12.2-12.5) | >=1592(>=20) | =<150 |
N40SH | 302-326(38-41) | 1250-1280(12.5-12.8) | >=1592(>=20) | =<150 |
N42SH | 318-342(40-43) | 1280-1320(12.8-13.2) | >=1592(>=20) | =<150 |
N45SH | 342-366(43-46) | 1320-1380(13.2-13.8) | >=1592(>=20) | =<150 |
N30UH | 223-247(28-31) | 1080-1130(10.8-11.3) | >=1990(>=25) | =<180 |
N33UH | 247-271(31-34) | 1130-1170(11.3-11.7) | >=1990(>=25) | =<180 |
N35UH | 263-287(33-36) | 1170-1220(11.7-12.2) | >=1990(>=25) | =<180 |
N38UH | 287-310(36-39) | 1220-1250(12.2-12.5) | >=1990(>=25) | =<180 |
N40UH | 302-326(38-41) | 1250-1280(12.5-12.8) | >=1990(>=25) | =<180 |
N30EH | 223-247(28-31) | 1080-1130(10.8-11.3) | >=2388(>=30) | =<200 |
N33EH | 247-271(31-34) | 1130-1170(11.3-11.7) | >=2388(>=30) | =<200 |
N35EH | 263-287(33-36) | 1170-1220(11.7-12.2) | >=2388(>=30) | =<200 |
N38EH | 287-310(36-39) | 1220-1250(12.2-12.5) | >=2388(>=30) | =<200 |
