Sintered NdFeB magnet is contemporary the most powerful magnet magnetic, it not only has high remanence, high coercive force, high magnetic energy product and high performance price excellent characteristics, such as size and easy processing into various shapes, especially suitable for high power, high magnetic field and miniaturization, light-duty and upgrading of products.
CHARACTERISTICS
| Grade | Remanence(Br) | Coercive Force(bHc) | Intrisic Coercive Force(Hcj) | Max Energy Product(BH)max | Working Temp(L/D=0.7) | ||||
| KGS | T | KOe | KA/m | KOe | KA/m | MGOe | KJ/m? | ºC | |
| N35 | 11.8-12.4 | 1.18-1.24 | ≥10.5 | ≥835 | ≥12 | ≥955 | ≥33 | ≥263 | ≤80 |
| N38 | 12.3-12.8 | 1.23-1.28 | ≥10.8 | ≥859 | ≥12 | ≥955 | ≥36 | ≥286 | ≤80 |
| N40 | 12.6-13.2 | 1.26-1.32 | ≥10.8 | ≥859 | ≥12 | ≥955 | 38-41 | 302-326 | ≤80 |
| N42 | 12.8-13.4 | 1.28-1.34 | ≥10.8 | ≥859 | ≥12 | ≥955 | 40-44 | 318-350 | ≤80 |
| N45 | 13.2-13.8 | 1.32-1.38 | ≥11.0 | ≥875 | ≥12 | ≥955 | 43-47 | 342-374 | ≤80 |
| N48 | 13.6-14.1 | 1.36-1.41 | ≥11.2 | ≥891 | ≥12 | ≥955 | 45-49 | 358-390 | ≤80 |
| N50 | 13.9-14.6 | 1.39-1.46 | ≥11.2 | ≥891 | ≥12 | ≥955 | 47-51 | 374-405 | ≤80 |
| N52 | 14.2-14.6 | 1.42-1.46 | ≥10.2 | ≥812 | ≥11 | ≥875 | 48-53 | 390-422 | ≤80 |
| 38M | 12.3-12.8 | 1.23-1.28 | ≥11.5 | ≥915 | ≥14 | ≥1114 | 36-38 | 286-302 | ≤100 |
| 40M | 12.6-13.2 | 1.26-1.32 | ≥11.8 | ≥939 | ≥14 | ≥1114 | 38-41 | 302-326 | ≤100 |
| 42M | 12.8-13.4 | 1.28-1.34 | ≥12.0 | ≥955 | ≥14 | ≥1114 | 40-43 | 318-342 | ≤100 |
| 45M | 13.2-13.8 | 1.32-1.38 | ≥12.2 | ≥971 | ≥14 | ≥1114 | 43-46 | 342-366 | ≤100 |
| 48M | 13.6-14.0 | 1.36-1.40 | ≥12.5 | ≥995 | ≥14 | ≥1114 | 45-49 | 358-390 | ≤100 |
| 50M | 13.9-14.3 | 1.39-1.43 | ≥12.5 | ≥995 | ≥14 | ≥1114 | 47-51 | 374-405 | ≤100 |
| 35H | 11.7-12.4 | 1.17-1.24 | ≥10.8 | ≥859 | ≥17 | ≥1353 | 33-37 | 263-295 | ≤120 |
| 38H | 12.3-12.8 | 1.23-1.28 | ≥11.5 | ≥915 | ≥17 | ≥1353 | 36-40 | 286-318 | ≤120 |
| 40H | 12.6-13.2 | 1.26-1.32 | ≥11.8 | ≥939 | ≥17 | ≥1353 | 38-41 | 302-326 | ≤120 |
| 42H | 12.8-13.4 | 1.28-1.34 | ≥12.0 | ≥955 | ≥17 | ≥1353 | 40-43 | 318-342 | ≤120 |
| 45H | 13.2-13.8 | 1.32-1.38 | ≥12.2 | ≥971 | ≥17 | ≥1353 | 43-46 | 342-366 | ≤120 |
| 48H | 13.6-14.2 | 1.36-1.42 | ≥12.8 | ≥1019 | ≥17 | ≥1274 | 45-48 | 358-382 | ≤120 |
| 33SH | 11.4-12.0 | 1.14-1.20 | ≥10.5 | ≥835 | ≥20 | ≥1592 | ≥31 | ≥247 | ≤150 |
| 35SH | 11.7-12.5 | 1.17-1.25 | ≥10.8 | ≥859 | ≥20 | ≥1592 | ≥33 | ≥263 | ≤150 |
| 38SH | 12.2-12.7 | 1.22-1.27 | ≥11.3 | ≥899 | ≥20 | ≥1592 | 36-39 | 286-310 | ≤150 |
| 40SH | 12.4-13.0 | 1.24-1.30 | ≥11.8 | ≥939 | ≥20 | ≥1592 | 38-41 | 302-326 | ≤150 |
| 42SH | 12.8-13.6 | 1.28-1.36 | ≥12.0 | ≥955 | ≥20 | ≥1592 | 39-43 | 310-342 | ≤150 |
| 45SH | 13.2-13.7 | 1.32-1.37 | ≥12.2 | ≥971 | ≥20 | ≥1592 | 43-46 | 342-366 | ≤150 |
| 48SH | 13.6-14.1 | 1.36-1.41 | ≥12.8 | ≥1019 | ≥20 | ≥1592 | 45-48 | 358-382 | ≤150 |
| 30UH | 10.8-11.0 | 1.08-1.10 | ≥9.5 | ≥756 | ≥25 | ≥1990 | 28-31 | 223-247 | ≤180 |
| 33UH | 11.3-11.7 | 1.13-1.17 | ≥9.8 | ≥780 | ≥25 | ≥1990 | 31-34 | 247-270 | ≤180 |
| 35UH | 11.7-12.1 | 1.17-1.21 | ≥10.5 | ≥835 | ≥25 | ≥1990 | 33-36 | 263-286 | ≤180 |
| 38UH | 12.2-12.7 | 1.22-1.27 | ≥11.3 | ≥899 | ≥25 | ≥1990 | 36-39 | 286-310 | ≤180 |
| 40UH | 12.4-13.0 | 1.24-1.30 | ≥11.8 | ≥939 | ≥25 | ≥1990 | 38-41 | 302-326 | ≤180 |
| 30EH | 10.8-11.5 | 1.08-1.15 | ≥10.1 | ≥804 | ≥30 | ≥2388 | 28-31 | 223-247 | ≤200 |
| 32EH | 11.3-12.1 | 1.13-1.21 | ≥10.5 | ≥835 | ≥30 | ≥2388 | 30-33 | 238-263 | ≤200 |
| 35EH | 11.8-12.5 | 1.18-1.25 | ≥11.0 | ≥875 | ≥30 | ≥2388 | 33-35 | 263-278 | ≤200 |
| 38EH | 12.2-12.7 | 1.22-1.27 | ≥11.3 | ≥899 | ≥30 | ≥2388 | 36-39 | 286-310 | ≤200 |
| 40EH | 12.4-13.0 | 1.24-1.30 | ≥11.8 | ≥939 | ≥30 | ≥2388 | 38-41 | 302-326 | ≤200 |
1T=10kGs,1kOe=79.6kA/m,lMGOe=7.96kJ/m3.
The open flux irreversible loss of the testing sample at this temperature≤5%.
PHYSICAL PROPERTIES & COATING
Physical Properties of Sintered NdFeB Material
| Items | Parameter Values | Unit |
| Curie Temperature | 310~380 | ºC |
| Relative Recoil Permeability | 1.02~1.05 | |
| Reversible Temperature Coefficient of Br (20~100ºC) | -0.09~-0.13 | %/ºC |
| Reversible Temperature Coefficient of Hcj (20~100ºC) | -0.4~-0.7 | %/ºC |
| Density | 7.50~7.70 | g/cm3 |
| Vickers Hardness | 550~700 | |
| Bending Strength | -0.09~-0.13 | MPa |
| Tensile Strength | ≥80 | MPa |
| Compressive Strength | 800 ~1050 | MPa |
| Electric Resistivity | 150 | μΩ·cm |
| Thermal Conductivity | 8~10 | W/(M·ºC) |
| Coefficient of Thermal Expansion (Parallel to the orientation) | 5 | 10-6/K |
| Coefficient of Thermal Expansion (vertical to the orientation) | -1.5 | 10-6/K |
| Young's Modulus | 150~200 | GPa |
| Specific Heat(20ºC~320ºC) | 3.0~4.6 | J/(g·k) |
| weight loss(low weight loss products) | ≤2 | mg/cm2 |
Physical Properties & Application to Environment of the Coating
| Coating Material | Colour | Properties | Environment of Application | Thickness of Coating layer |
| Zine | Blue, Black and rainbow etc | Compact, Stable and Homogeneous | With reasonalbe capability of anticorrosion | 6um≤∮≤12 |
| Nickel-Copper-Nickel | White and black | Light and Stable | Suitable for higher corrosive environment | 15μm≤∮≤30pm |
| Phosphorization | Colorless or light gray | uniform thickness | short-term anticorrosion | - |
| Epoxy | Black and Gray | layer with certain luster, insurability | Suitable for higher corrosive environment | ≥15μm |
| Parylene | transparency | uniform thickness, density pinholes-free and insurability | Excellent capability of anticorrosion especially for small items | 0.1μm≤∮≤100pm |
| Ni+Cu+Epoxy | Black | Layer with certain luster insurability and stability | Excellent capability of anticorrosion. Suitable for hostile environment salt spray resistance>300hr | 10-30μm |
| Al+Epoxy | Black | Layer with certain luster insurability and stability | Excellent capability of anticorrosion. Suitable for hostile environment salt spray resistance>650hr Widely used in new energy auto magnets | 15-35μm |
1. Magnetized method: According to the requirements of customers.
2. Polarity requirements: Mark according to customer requirements.
3. Packaging materials and methods: general use kraft paper, foam board and carton packaging, special cases using vacuum packaging and shielding packaging, each weighing less than 20 kg. If customer has special requirements for packaging according to customer requirements.