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[China]
Trade Verify
Address: Room 503,Building C,No.319,Hubin East Road,Xiamen,China
Contact name:Sales Department
Xiamen Un Magnet Co.,Ltd. |
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Verified Suppliers
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Sintered Neodymium Magnets are permanent rare earth magnets made from neodymium, iron and boron that are sintered together in a process to form a strong and durable magnet. Due to their high coercivity and strong magnetic properties, these rare earth magnets are ideal for a variety of applications such as new energy cars, wind power generation, servo motors, traction motors, and more. Available grades range from N35 to N52, 35M to 50M, 35H to 48H, and 30SH to 45SH. The material used for these magnets is a powerful combination of neodymium, iron and boron, and they are available with a variety of coatings such as nickel, NiCuNi, zinc, epoxy and more. Our sintered neodymium magnets are certified with ISO9001, IATF16949, and ISO14001. For the highest level of performance from these magnets, these are the magnets you need. Our Sintered Neodymium Magnets provide the highest level of performance and dependability. With our sintered neodymium magnets, you can trust that your applications will run smoothly and effectively.
| 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 |
| Grade | Working Temp | |
| (L/D=0.7) | ||
| ℃ | ||
| N Series | N35~N52 | ≤80 |
| M Series | 38M~50M | ≤100 |
| H Series | 35H~48H | ≤120 |
| SH Series | 33SH~48SH | ≤150 |
| UH Series | 30UH~40UH | ≤180 |
| EH Series | 30EH~38EH | ≤200 |
| 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. |
| Parameter | Value |
|---|---|
| Material | Neodymium Iron Boron |
| Grade | N35-N52, 35M-50M, 35H-48H, 30SH-45SH... |
| Application | New Energy Cars,Wind Power Generation,Servo Motors,Traction Motors |
| Magnetic Orientation | As Customization |
| Coating | Nickel,NiCuNi,Zinc,Epoxy Etc |
| Shape | Block,Arc,Ring,Customized Shape Magnet |
| Certification | ISO9001, IATF16949, ISO14001 |
| Working Temperature | 80~220°C |
| Strong Magnets | Yes |
| Bar Magnet | Yes |
| Powerful Magnet | Yes |
| Permanent Magnet | Yes |
UNMAG's sintered neodymium magnet is a kind of permanent magnet made of neodymium, iron and boron. It has the highest magnetic energy product among all permanent magnet materials, excellent corrosion resistance, excellent strength and stability, and it can be used in a wide range of temperature and harsh environment. It is widely used in various precision instruments, new energy cars, wind power generation, servo motors, traction motors and other fields. It has the advantages of high coercive force, strong magnetization ability, high energy product, good temperature stability, low cost and easy manufacturing process. It can be surface treated with different coating, such as nickel, NiCuNi, zinc, epoxy, etc., according to customer's requirement. UNMAG's sintered neodymium magnet is certified by ISO9001, IATF16949 and ISO14001. It is packaged in a carton box and the delivery time is 20-25 days.
Tolearance Control
| Name | Dimension(mm) | Tolerance(mm) |
| Wall thickness | T≤10 | ±0.04 |
| 10<T≤30 | ±0.05 | |
| 30<T≤50 | ±0.06 | |
| Length | L≤10 | ±0.04 |
| 10<L≤30 | ±0.05 | |
| 30<T≤50 | ±0.05 | |
| L>50 | ±0.08 | |
| Width | W>50 | ±0.05 |
| L>50 | W≥50 | ±0.08 |
Available size: L≤200mm,W≤100mm,T: 1.5~50mm,H3~60mm
| Coating Material | Colour | Properties | Environment of Application | Thickness of Coating layer |
| 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 |
UNMAG's sintered neodymium magnets are rare earth magnets, made of an alloy of neodymium, iron and boron. They are the strongest type of permanent magnets and are used for a wide range of applications, from motors and sensors to loudspeakers and magnetic assemblies.
With strong neodymium magnets, UNMAG can provide high quality sintered neodymium magnet for your needs and application. Our magnets are made to strict quality standards and we guarantee them to be defect-free. Our magnets are certified to ISO9001, IATF16949, ISO14001 and RoHS standards.
Packaging and Shipping of Sintered Neodymium Magnet:
The sintered neodymium magnet is packaged in a sealed plastic bag and then placed in a cardboard box or wooden box for shipping. The box is then sealed with tape to keep the magnet secure during transportation.
When shipping the product, it is important to check the regulations of the country of destination. Some countries may have restrictions on the type and amount of magnets that can be shipped. It is important to check the regulations prior to shipping to ensure compliance with local laws.
For more magnetic properities of sintered neodymium magnet,Please chick here.
