NdFeB permanent ring magnetic steel is widely used in the field of industrial motor, servo motor, stepper motor, robot, industrial automation production line, etc. The common material are N45, 42M, 42H, 38SH, 40SH, 38UH and 33EH. Baotou is the the most richest supplier of rare earth like NdFeB, niobium, thorium, etc.
Specifications
| Product | Ring magnetic steel, neodymium iron boron ring, neodymium ring, rare earth ring magnetic steel | |
| Material | Neodymium iron boron, neodymium magnet, rare earth magnet steel, magnet | |
| Performance level and operating temperature | Performance level | The highest operating temperature |
| N35-N54 | 80°C (176°F) | |
| 35M-52M | 100°C (212°F) | |
| 35H-50H | 120°C (248°F) | |
| 33SH-48SH | 150°C (302°F) | |
| 28UH-45UH | 180°C (356°F) | |
| 28EH-42EH | 200°C (392°F) | |
| 28AH-40AH | 230°C (446°F) | |
| Appearance | Ring, wafer, tile, square, cylinder and other special shapes | |
| Clad layer | Nickel, nickel copper nickel, chemical nickel, blue and white zinc, color zinc, epoxy resin, phosphating, passivation, elvore, gold, silver, tin | |
| Magnetization direction | Thickness direction magnetization, axial magnetization, radial magnetization, multistage magnetization and radiation magnetization, and special customized magnetization can also be operated | |
| Application | Servo motor, brushless motor, linear motor, electric tools, automobile spare parts (EPS, the oil pump motor, start the motor, ignition coil, etc.), the electric car motor, robot drive motor, frequency conversion compressor, rail transit traction motor, consumer electronics, permanent magnet wind turbine, energy-saving elevator, sound equipment, magnetic switch, optical drive heads, nuclear magnetic resonance (NMR), magnetic separator, sensors, etc | |
| Certificate | ISO/TS 16949, ISO9001, ISO14001, RoHS, REACH | |
| Package | Standard sea or air packing, such as cartons, wooden cases, pallets, etc | |
| Delivery time | The sample usually takes 7 days, and the batch usually takes 15-20 days | |
| Shippment | Express(TNT, DHL, FedEx, UPS), Air and sea transport | |
Magnetic properties of various grades of NdFeB materials
| Material | Remanence (minimum) | Coercivity (minimum) | Coercivity (minimum) | Maximum Magnetic Energy Product | Density | Temperature Coefficient | Curie | Maximum Service Temperature | Recoil | |||||
| Temperature | Permeability | |||||||||||||
| Grade | Br | Hcj | Hcb | （BH）max | D | αBr | αHcj | Tc | Tw | μrec | ||||
| Gs | mT | Oe | KA/m | Oe | KA/m | MGOe | KJ/m3 | g/m3 | %/ ℃ | %/ ℃ | ℃ | ℃ | — | |
| N42 | 12800~13300 | 1280~1330 | 12000 | 955 | 11600 | 923 | 40~43 | 318~342 | 7.5 | -0.12 | -0.6 | 320 | 80 | 1.05 |
| N45 | 13300~13700 | 1330~1370 | 12000 | 955 | 11000 | 876 | 43~46 | 342~366 | 7.5 | -0.12 | -0.6 | 320 | 80 | 1.05 |
| N48 | 13700~14200 | 1370~1420 | 12000 | 955 | 11200 | 892 | 46~49 | 366~390 | 7.5 | -0.12 | -0.6 | 320 | 80 | 1.05 |
| N50 | 13900~14400 | 1390~1440 | 11000 | 876.00 | 10500 | 836.00 | 47~51 | 374~406 | 7.55 | -0.12 | -0.6 | 320 | 80 | 1.05 |
| N52 | 14200~14700 | 1420~1470 | 11000 | 876.00 | 10500 | 836.00 | 49~53 | 390~422 | 7.55 | -0.12 | -0.6 | 320 | 80 | 1.05 |
| N42M | 12800~13300 | 1280~1320 | 14000 | 1114.00 | 12000 | 955.00 | 40~43 | 318~342 | 7.5 | -0.12 | -0.6 | 320 | 100 | 1.05 |
| N45M | 13300~13700 | 1330~1370 | 14000 | 1114.00 | 12500 | 995.00 | 43~46 | 342~366 | 7.5 | -0.12 | -0.6 | 320 | 100 | 1.05 |
| N48M | 13600~14200 | 1360~1420 | 14000 | 1114.00 | 12800 | 1019.00 | 45~49 | 358~390 | 7.55 | -0.12 | -0.6 | 320 | 100 | 1.05 |
| N50M | 13900~14400 | 1390~1440 | 14000 | 1114.00 | 13000 | 1035.00 | 47~51 | 374~406 | 7.55 | -0.12 | -0.6 | 320 | 100 | 1.05 |
| N52M | 14200~14700 | 1420~1470 | 13000 | 1035.00 | 12500 | 995.00 | 49~53 | 390~422 | 7.55 | -0.12 | -0.6 | 320 | 100 | 1.05 |
| N42H | 12800~13300 | 1280~1330 | 17000 | 1353.00 | 12000 | 955.00 | 40~43 | 318~342 | 7.55 | -0.12 | -0.6 | 320 | 120 | 1.05 |
| N45H | 13300~13700 | 1330~1370 | 17000 | 1353.00 | 12100 | 963.00 | 43~46 | 342~366 | 7.55 | -0.12 | -0.6 | 320 | 120 | 1.05 |
| N48H | 13600~14200 | 1360~1420 | 17000 | 1353.00 | 12900 | 1027.00 | 45~49 | 358~390 | 7.6 | -0.12 | -0.6 | 320 | 120 | 1.05 |
| N50H | 13900~14400 | 1390~1440 | 16000 | 1274.00 | 13000 | 1035.00 | 47~51 | 374~406 | 7.6 | -0.12 | -0.6 | 320 | 120 | 1.05 |
| N42SH | 12800~13200 | 1280~1320 | 20000 | 1592.00 | 12200 | 971.00 | 40~43 | 318~342 | 7.55 | -0.11 | -0.55 | 320 | 150 | 1.05 |
| N45SH | 13200~13700 | 1320~1370 | 20000 | 1592.00 | 12300 | 979.00 | 43~46 | 342~366 | 7.6 | -0.11 | -0.55 | 320 | 150 | 1.05 |
| N48SH | 13600~14200 | 1360~1420 | 19000 | 1512.00 | 12500 | 995.00 | 45~49 | 358~390 | 7.6 | -0.11 | -0.55 | 320 | 150 | 1.05 |
| N28UH | 10200~10800 | 1020~1080 | 25000 | 1990.00 | 9600 | 764.00 | 26~29 | 207~231 | 7.5 | -0.1 | -0.51 | 320 | 180 | 1.05 |
| N30UH | 10800~11300 | 1080~1130 | 25000 | 1990.00 | 10200 | 812.00 | 28~31 | 223~247 | 7.5 | -0.1 | -0.51 | 320 | 180 | 1.05 |
| N33UH | 11300~11700 | 1130~1170 | 25000 | 1990.00 | 10700 | 852.00 | 31~34 | 247~271 | 7.55 | -0.1 | -0.51 | 320 | 180 | 1.05 |
| N35UH | 11700~12200 | 1170~1220 | 25000 | 1990.00 | 10800 | 860.00 | 33~36 | 263~287 | 7.55 | -0.1 | -0.51 | 320 | 180 | 1.05 |
| N38UH | 12200~12500 | 1220~1250 | 25000 | 1990.00 | 11000 | 876.00 | 36~39 | 287~310 | 7.6 | -0.1 | -0.48 | 320 | 180 | 1.05 |
| N40UH | 12500~12800 | 1250~1280 | 25000 | 1990.00 | 11500 | 915.00 | 38~41 | 302~326 | 7.6 | -0.1 | -0.48 | 320 | 180 | 1.05 |
| N42UH | 12700~13200 | 1270~1320 | 24000 | 1910.00 | 12200 | 971.00 | 39~43 | 310~342 | 7.6 | -0.1 | -0.48 | 320 | 180 | 1.05 |
| N45UH | 13200~13700 | 1320~1370 | 24000 | 1910.00 | 12300 | 979.00 | 43~46 | 342~366 | 7.6 | -0.1 | -0.48 | 320 | 180 | 1.05 |
| N28EH | 10400~10900 | 1040~1090 | 30000 | 2388.00 | 9800 | 780.00 | 26~29 | 207~231 | 7.6 | -0.09 | -0.48 | 320 | 200 | 1.05 |
| N30EH | 10800~11300 | 1080~1130 | 30000 | 2388.00 | 10200 | 812.00 | 28~31 | 223~247 | 7.6 | -0.09 | -0.48 | 320 | 200 | 1.05 |
| N33EH | 11300~11700 | 1130~1170 | 30000 | 2388.00 | 10300 | 820.00 | 31~34 | 247~271 | 7.6 | -0.09 | -0.48 | 320 | 200 | 1.05 |
| N35EH | 11700~12200 | 1170~1220 | 30000 | 2388.00 | 10500 | 836.00 | 33~36 | 263~287 | 7.6 | -0.09 | -0.48 | 320 | 200 | 1.05 |
| N38EH | 12000~12500 | 1200~1250 | 30000 | 2388.00 | 11500 | 915.00 | 35~39 | 279~310 | 7.6 | -0.09 | -0.48 | 320 | 200 | 1.05 |
| N28AH | 10200~10900 | 1020~1090 | 34000 | 2706.00 | 9800 | 780.00 | 25~29 | 199~231 | 7.6 | -0.09 | -0.48 | 320 | 240 | 1.05 |
| N30AH | 10700~11300 | 1070~1130 | 34000 | 2706.00 | 10200 | 812.00 | 27~31 | 215~247 | 7.6 | -0.09 | -0.48 | 320 | 240 | 1.05 |
| N33AH | 11100~11700 | 1110~1170 | 34000 | 2706.00 | 10300 | 820.00 | 30~34 | 239~271 | 7.6 | -0.09 | -0.48 | 320 | 240 | 1.05 |
| N35AH | 11700~12200 | 1170~1220 | 34000 | 2706.00 | 10500 | 836.00 | 32~36 | 255~287 | 7.6 | -0.09 | -0.48 | 320 | 240 | 1.05 |
