Product Name | Neodymium Magnets |
Grade | N30-N55, N30M- 52M, N30H-52H, N30SH-48SH, 30UH-45UH, 28EH-40EH, 35AH |
Size | Custom Size |
Shape | Block, Round/Disc, Ring, Cylinder, Bar, Countersunk, Segment, Hook, Cup, Trapezoid, etc |
Surface Plating | Nickel, Zn, Ni-Cu-Ni , Epoxy ,Rubber, Gold, Sliver |
Magnetization | Thickness/Axially/Diametrally/Multi-poles/Radial Magnetized |
Minimum Order Quantity: | We have no MOQ requirement, we will quote to you per your quantity. |
Packaging Details: | QM's standard air/sea shield packing. |
Delivery Time: | 3-30days according to the products |
Shipment | Express via DHL/FedEx/UPS, or by sea. |
Sample | Available |
Sintered NdFeB magnets are the most powerful commercialized permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. Nd-Fe-B is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity, and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics, abundant raw material and relatively low prices, Nd-Fe-B offers more flexibility in designing of new or replace the traditional magnet materials such as ceramic, Alnico and Sm-Co to achieve high efficiency, low cost and more compact devices.
Magnetic Properties of Sintered NdFeB Magnets
1.Licensed Products by SSMC-MQ - ISO 9002 Quality Standard Certified
2.The above-mentioned data of magnetic parameters and physical properties are given at room temperature.
3.The maximum service temperature of magnet is changeable due to the ratio length and diameter and environmental factors.
4.Special properties can be achieved with custom method.
Physical and Mechanical Properties
Thermal Conductivity | 7.7 kcal/m-h-°C |
Young's Modulus | 1.7 x 10⁴ kg/mm2 |
Bending Strength | 24 kg/mm2 |
Compressive Strength | 80 kg/mm2 |
Electrical Resistivity | 160 µ-ohm-cm/cm2 |
Density | 7.4-7.55 g/cm3 |
Vickers Hardness | 500 - 600 |
Advantages of sintered Magnet
*Extreme strong Br Resident induction.
*Excellent demagnetization resistance capability.
*Good Price relative to its high magnetic properties.
QM Production Flow Chart
Coating for NdFeB Magnets
Available Coatings | ||||
Surface | Coating | Thickness (Microns) | Color | Resistance |
Passivation |
| 1 | Silver Grey | Temporary Protection |
Nickel | Ni+Ni | 10-20 | Bright Silver | Excellent against Humidity |
Ni+Cu+Ni | ||||
Zinc | Zn | 8-20 | Bright Blue | Good Against Salt Spray |
C-Zn | Shinny Color | Excellent Against Salt Spray | ||
Tin | Ni+Cu+Sn | 15-20 | Silver | Superior Against Humidity |
Gold | Ni+Cu+Au | 10-20 | Gold | Superior Against Humidity |
Copper | Ni+Cu | 10-20 | Gold | Temporary Protection |
Epoxy | Epoxy | 15-25 | Black, Red,Grey | Excellent Against Humidity |
Ni+Cu+Epoxy | ||||
Zn+Epoxy | ||||
Chemical | Ni | 10-20 | Silver Grey | Excellent Against Humidity |
Parylene | Parylene | 5-20 | Grey | Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria. |
Packing and Shipping
| Magnetic Properties of Sintered NdFeB Magnets | ||||||||||||
| 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 | %/°C | %/°C | °C | °C | |
| N33 | 31-33 | 247-263 | 11.30-11.70 | 1130-1170 | >10.5 | >836 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N35 | 33-36 | 263-287 | 11.70-12.10 | 1170-1210 | >10.9 | >868 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N38 | 36-39 | 287-310 | 12.10-12.50 | 1210-1250 | >11.3 | >899 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N40 | 38-41 | 302-326 | 12.50-12.80 | 1250-1280 | >11.6 | >923 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N42 | 40-43 | 318-342 | 12.80-1320 | 1280-1320 | >11.6 | >923 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N45 | 43-46 | 342-366 | 13.20-13.70 | 1320-1380 | >11.0 | >876 | >12 | >955 | -0.12 | -0.6 | 310 | 80 |
| N48 | 46-49 | 366-390 | 13.60-14.20 | 1380-1420 | >10.5 | >835 | >11 | >876 | -0.12 | -0.6 | 310 | 80 |
| N50 | 47-51 | 374-406 | 13.90-14.50 | 1390-1450 | >10.5 | >836 | >11 | >876 | -0.12 | -0.6 | 310 | 80 |
| N52 | 49-53 | 390-422 | 14.2-14.8 | 1420-1480 | >10.0 | >796 | >11 | >876 | -0.12 | -0.6 | 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 | >10.9 | >868 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N38M | 36-40 | 286-318 | 12.30-13.00 | 1230-1300 | >11.3 | >899 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N40M | 38-42 | 302-334 | 12.60-13.20 | 1260-1320 | >11.6 | >923 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N42M | 40-44 | 318-350 | 13.00-13.50 | 1300-1350 | >11.6 | >923 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N45M | 42-46 | 334-366 | 13.20-13.80 | 1320-1380 | >11 | >876 | >14 | >1114 | -0.12 | -0.59 | 320 | 100 |
| N48M | 46-46 | 366-390 | 13.6-14.2 | 1360-1420 | >11 | >876 | >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 | >11.6 | >923 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N45H | 43-46 | 342-366 | 13.30-13.90 | 1330-1390 | >11.6 | >923 | >17 | >1353 | -0.11 | -0.58 | 320-350 | 120 |
| N48H | 46-49 | 366-390 | 13.60-14.20 | 1360-142- | >11.6 | >923 | >16 | >1274 | -0.11 | -0.58 | 320-350 | 120 |
| N33SH | 31-34 | 247-272 | 11.30-11.70 | 1130-1170 | >10.6 | >836 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N35SH | 33-36 | 263-287 | 11.70-12.10 | 1170-1210 | >11.0 | >868 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N38SH | 36-39 | 287-310 | 12.10-12.50 | 1210-1250 | >11.4 | >899 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N40SH | 38-41 | 302-326 | 12.10-12.80 | 1240-1280 | >11.6 | >923 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N42SH | 40-43 | 318-342 | 12.80-13.40 | 1280-1340 | >11.6 | >923 | >20 | >1592 | -0.11 | -0.55 | 340-360 | 150 |
| N45SH | 43-46 | 342-366 | 13.30-13.90 | 1330-1390 | >11.6 | >923 | >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 | 247-263 | 11.30-11.70 | 1130-1170 | >10.7 | >852 | >25 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
| N35UH | 33-36 | 263-287 | 11.80-12.20 | 1180-1220 | >10.9 | >899 | >25 | >1990 | -0.11 | -0.51 | 350-380 | 180 |
| N38UH | 36-39 | 287-310 | 12.20-12.70 | 1220-1270 | >11.3 | >854 | >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 |
| N33EH | 31-33 | 247-263 | 11.30-11.70 | 1130-1170 | >10.7 | >852 | >30 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
| N35EH | 33-36 | 263-287 | 11.80-12.20 | 1180-1220 | >10.9 | >868 | >30 | >2388 | -0.11 | -0.51 | 350-380 | 200 |
| N28AH | 26-29 | 207-231 | 10.30-10.90 | 1030-1090 | >9.8 | >780 | >35 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
| N30AH | 28-31 | 223-247 | 10.80-11.30 | 1180-1130 | >10.2 | >812 | >35 | >2786 | -0.11 | -0.51 | 350-380 | 220 |
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