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After expanding our production capacity, UNMAG are increasing the warehouse of 1000 square mete...
After expanding our production capacity, UNMAG are increasing the warehouse of 1000 square mete...
Magnet Type: rapezoidal Shaped Magnet
Material Grade: 35~N52
Working Temperature: 0~220°C
Surface Treatment: ikel,Zinc,Epoxy,Gold...
Magnetization Direction: xial,Diametrical
Customization: cceptable
Neodymium Trapezoidal Magnets
Neodymium Trapezoidal magnets made from the strongest magnetic material. Designed with trapezoidal
shape to allow the magnet to be fastened into special place for a generator or oil equipment.
| Parameter Name | Parameter Values | Unit |
| Curie Temperature | 310～380 | ℃ |
| Relative Recoil Permeability | 1.02～1.05 | |
| Reversible Temperature Coefficient of Br (20~100℃) | -0.09～-0.13 | %/℃ |
| Reversible Temperature Coefficient of Hcj (20~100℃) | -0.4～-0.7 | %/℃ |
| 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·℃) |
| 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（20℃～320℃） | 3.0～4.6 | J/(g·k) |
| weight loss（low weight loss products） | ≤2 | mg/cm2 |
| Mixing | 1.Mix the ingredients. |
| Melting | 2.Dissolve the mixture at high temperature and prepare an alloy. |
| Fine pulverization | 3.Turn the alloy into fine powder. |
| Molding in a magnetic field | 4.When pressing the fine powder, apply a magnetic field to it and prepare a molded product of powder with aligned directions of magnetization. |
| Sintering and heat treatment | 5.Sinter the product at about 1,100℃, and then subject it to heat treatment at about 600℃ to increase its magnetic characteristics. |
| Processing | 6.Process the manufactured magnet base material and finish it into the product shape. |
| Surface treatment | 7.Subject the product to surface treatment in order to make it rustproof. |
| Magnetization | 8.Apply a magnetic field to give the magnet magnetism. |
Applications of Neodymium - Ideal for applications where a very high magnetic force is needed in a small area.
Medical equipment,magnetic separators,linear actuators, microphone assemblies, servo motors, DC motors
(automotive starters), computer rigid disc drives, printers and speakers are a few examples.
Applications of Neodymium Magnet with Trapezoidal shaped:As per customers's special application
Recomend tolerance for all size: ±0.1MM
Regarding of magnetic properties of Sintered NdFeB Magnet, Please click here.
For your different application,different grade/series for your choice.For application in normal life,N series is enough.
Different Series correspond to different working temperature.
| Grade | Max Operating Temperatures | |
| Series | Grade Range | |
| N Series | N35-N52 | 80°C |
| M Series | 35M-52M | 100°C |
| H Series | 33H-48H | 120°C |
| SH Series | 30SH-48SH | 150°C |
| UH Series | 30UH-42UH | 180°C |
| EH Series | 30EH-38EH | 200°C |
| AH Series | 30AH-35AH | 220°C |
Physical Properties & Application to Environment of the Coating
Coating Material | Colour | Properties | Environment of Application | Thickness of |
Zinc | 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 | Excellent capability of | 10-30μm |
anticorrosion. Suitable for | ||||
hostile environment | ||||
salt spray resistance>300hr | ||||
Al+Epoxy | Black | Layer with certain luster | Excellent capability of | 15-35μm |
anticorrosion. Suitable for | ||||
hostile environment | ||||
salt spray resistance>650hr Widely used in new energy | ||||
auto magnets |
| For more details,welcome to contact with our sales engineers. | |||
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