#1 NEODYMIUM MAGNET SUPPLIER
GP magnets supplies a full range of neodymium magnets with great magnetic strength, heat resistance and durability, perfect for your items.
Stand Out with Neodymium Magnets
Take advantage of exceptional quality control measures enabled by cutting edge processes developed at GP Magnetics; get superior products that last longer and withstand tough conditions without breaking the bank!
Sourcing Quality NdFeB Magnet from GP Magnets
GP Magnets has many years of design and development experience and has been developing and producing high performance consistent, high quality NdFeB magnets with high coercivity, low reversible temperature coefficient, and low weight loss characteristics. We can provide customized sintered NdFeB and solutions for our customers.
The third generation rare earth permanent magnet NdFeB is the strongest performance permanent magnet. Its BHmax value is 5-12 times that of ferrite magnets and 3-10 times that of Alnico magnets; its coercivity is equivalent to 5-10 times that of ferrite magnets and 5-15 times that of Alnico magnets, and its potential magnetic energy is so high that it can pick up heavy objects equivalent to 640 times of its own weight.
NdFeB magnets have good resistance to magnetic loss and can work stably in high temperature environment. The maximum working temperature of ordinary magnets is about 80℃, beyond this temperature range, serious demagnetization will occur, while the maximum working temperature of NdFeB magnets can reach 220℃.
Due to its high magnetic strength, it requires less NdFeB material to produce the same magnetic field as a large number of other materials, thus significantly reducing the size of the product and the quality of the product.
What is neodymium magnet?
Neodymium magnets, also known as NdFeB magnets or NIB magnets, are a type of permanent magnet made from an alloy of neodymium, iron, and boron (Nd2Fe14B). They are the strongest and most widely used magnets available today. Neodymium magnets were first developed in the 1980s and have since revolutionized various industries with their exceptional magnetic properties.
Wide Custom Options for Your Neodymium Magnets
| Curie temperature | ℃ | 310~400 | Thermal conductivity | W/m·℃ | 8～10 | ||
| density | g/cm3 | 7.4~7.7 | Young’s model | GPa | 150~200 | ||
| Vickers hardness | HV | 500～700 | Resistivity | C∥ | μΩ·m | 1.4～1.6 | |
| Recovery Permeability | / | 1.02~1.08 | C⊥ | μΩ·m | 1.2～1.4 | ||
| Compressive strength | MPa | 1000～1100 | Thermal expansion coefficient | C∥ | 10-6/℃ | 4～9 | |
| Bending strength | MPa | 150～400 | C⊥ | 10-6/℃ | -2～0 | ||
| working temperature | N | m | h | SH | UH | EH | TH |
| 80°C | 100°C | 120°C | 150°C | 180°C | 200℃ | 250°C | |
| Note: 1. C∥ is the value measured in the direction of easy magnetization, and C⊥ is the value measured in the direction perpendicular to the direction of easy magnetization. | |||||||
Performance of neodymium magnet
Neodymium magnets exhibit superb magnetic properties with high Curie points beyond typical operating temperatures. Their exceptional mechanical strength and hardness provide durable performance under significant stresses. NdFeB magnets are engineered for optimal magnetic and structural properties in the most demanding environments.
From Design to Delivery
At GP Magnets, we design custom magnet to meet your specific needs. We combine ingenuity, deep expertise and a dedicated line of equipment in order to provide you with the exact product you need, without sacrificing quality design and engineering.
- 2D and 3D magnetic modeling of designs
- Rapid prototyping of designs
- Ability to manufacture any number of magnets
- Extensive product quality checks
- On-time delivery
Our customization capabilities cover all neodymium magnet shapes
Standard shapes of our neodymium magnets include discs, blocks, rings and arc segments in a variety of sizes and grades. Non-standard shapes and sizes can be custom manufactured from raw materials to your exact specifications.
What are the grades of neodymium magnets
Neodymium magnets are available in different grades, each denoting the maximum energy product (the strength) of the magnet material.
When choosing the appropriate neodymium magnet grade for your application, consider the specific requirements and magnetic force needed. It’s important to balance strength with the specific application’s needs to ensure optimal performance.
- N35 – N52
- N35M – N52M
- N35H – N52H
- N30SH – N48SH
- N30UH – N42UH
- N28EH – N40EH
- N28AH – N35AH
| Material Type | Residual Flux Density (Br) | Max.Energy Product (BH)max |
|---|---|---|
N35 | 11.7-12.1 KGs | 33-35 MGOe |
N38 | 12.2-12.6 KGs | 36-38 MGOe |
N40 | 12.6-12.9 KGs | 38-40 MGOe |
N42 | 13.0-13.2 KGs | 40-42 MGOe |
N45 | 13.3-13.7 KGs | 43-45 MGOe |
N48 | 13.8-14.2 KGs | 45-48 MGOe |
N50 | 14.1-14.5 KGs | 48-50 MGOe |
N52 | 14.5-14.8 KGs | 49.5-52 MGOe |
Full range of custom surface treatments
Standard shapes of our neodymium magnets include discs, blocks, rings and arc segments in a variety of sizes and grades. Non-standard shapes and sizes can be custom manufactured from raw materials to your exact specifications.
| Type of coating | thickness | Exterior | Corrosion resistance | ||||
|---|---|---|---|---|---|---|---|
| PCT | salt spray | hot and humid | acid, alkali | Oil | |||
| Zn (White Zn) | ≥5 μm | Blue and white | —— | ★★ | ★★★ | —— | ★ |
| Zn (Color-plated Zn) | ≥5 μm | iridescent | —— | ★★★ | ★★★★ | —— | ★ |
| Ni+Cu+Ni | ≥15 μm | silver white | ★★★ | ★★★★ | ★★★★★ | ★★★ | ★★★ |
| Ni+Cu+Ni+Sn | ≥15 μm | silver white | ★★★★ | ★★★★ | ★★★★★ | —— | —— |
| Chemic Ni | ≥5 μm | silver white | ★★★★ | ★★★★★ | ★★★★★ | ★★★ | ★★★ |
| Epoxy | ≥12 μm | black or gray | ★★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★ |
| Passivated | ≤2 μm | black or gray | —— | —— | ★★★ | —— | ★★★ |
| al | ≥3 μm | silver gray | ★★★★ | ★★★ | ★★★★ | —— | ★★★ |
| Al+Epoxy | ≥15 μm | black or gray | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Zn-Al | ≥10 μm | silver white or silver gray | ★★★★★ | ★★★★★ | ★★★★★ | —— | ★★★★★ |
| Everluber | ≥5 μm | Golden | ★★★★ | ★★★★ | ★★★★★ | ★★★★★ | ★★★★ |
| Teflon | ≥5 μm | black | ★★ | ★★★ | ★★★★★ | ★★★★★ | ★★★ |
| Parylene coating | ≥3 μm | transparent | ★★ | ★★★ | ★★★★★ | ★★★★★ | ★★★ |
Automotive
Starter motors, control units, speakers, eddy current brakes, alternators, speedometers.
Telecommunications
Loudspeakers, microphones, telephone ringers, electroacoustic pickups, switches and relays.
Consumer electronics
DC motors, low voltage DC drives, TV speakers and audio, TV beam correction and focusing devices, CD drives, VCRs, computers, electronic clocks, analog watches.
Industrial
DC motors for magnetic tools, robots, magnetic separators, magnetic bearings, servo motor drives, lifting equipment, instrumentation and measuring equipment.
Electronic & Instrumentation
Sensors, non-contact switches, energy meter disks, electromechanical sensors, cross-field tubes, flux transfer tripping devices, dampers.
Biosurgery
Dentures, orthopedics, wound closure, gastric seals, rejection collars, ferromagnetic probes, magnetically powered artificial hearts, MRI scanners.
Why choose neodymium magnet
Strong magnetic
Neodymium metal is widely used in the production of Nd-Fe-B magnets, which have an energy density of 27 to 35 million Gauss-Oster.
Good resistance
NdFeB magnets are based on rare elements, which have a high coercive force in themselves and cannot affect their magnetic force at all in natural environments and normal conditions, ensuring the stability of magnetic force.
High temperature resistance
The limit temperature and Curie temperature of NdFeB magnets can withstand the limit temperature rises greatly, which can guarantee the machine operation under the temperature used by the machine.
Hardness
NdFeB magnets have added the density of rare elements, which makes the magnets much harder than ordinary iron-absorbing stones. The unavoidable collision in use will not affect the integrity of the magnet.
Fine precision
The neodymium magnets are meticulous, both the tolerance of size and the value of performance magnetism are measured by professional machines such as Gauss meter to indicate the direction of magnetization, making the error negligible.
Practicality & preservation
The magnetism of neodymium magnet not only exceeds the common magnet, but its practicality can meet the needs of various customers. Neodymium magnets can be used for a long time and are suitable for a large quantity of stock in various cases.
Strong machinability
It can be machined to make the shape that meets the purpose, and it is also suitable for small-lot samples. Even in small size, it is possible to make a magnet with strong magnetic power and high magnetic performance.
Wide range of uses
Basically every industry can be applied, and every human body can find neodymium magnets.
Neodymium Magnet Ordering Process
Instant Quote
We will give you a quote within 12 hours to your satisfaction
Sample Testing
Produce samples according to your requirements and send them to you for confirmation of mass production
Mass Production
Schedule the best production cycle for you to meet your sales schedule
Quality Control
We take full responsibility for ensuring that your magnets are manufactured to our standards
Delivery
We deliver magnets safely to your doorstep by land, sea and air.
How neodymium magnets are produced?
1. Raw Material Preparation
2. Melting
3. Hydrogen Decrepitation
4. Jet Milling
5. Pressing
6. Sintering
7. Machining
8. THRED
9. Surface Treatment
10. Magnetizing
11. Delivery
Why GP Magnets Manufacturer
One-stop magnet solution
From development and prototyping to production, we save you 50% of your time
15 years experience
With many years of experience in making neodymium magnets, you don't have to worry about not being able to source quality magnets.
Excellent production capacity
With 350 production facilities, 120 employees, and 25 technical team, you can receive the perfect product just by placing an order.
International Certification
With international certificates such as ISO, ROHS, MSDS, etc., we export to more than 20 countries worldwide.
Reasonable price
Magnet manufacturer located in China, from raw material to production, can save you 35% of your budget cost.
Reliable quality
With reliable quality, we have been supplying high quality neodymium magnets to more than 150 customers worldwide for more than 10 years, which is our core.
GP Magnets Standard -
consistent quality, every time
3 QE engineers & 8 QC engineers
Inspection of material composition, chemical safety, magnetic strength, salt spray test and dimensional tolerance
High temperature testing machine, tensile testing machine, gauss meter, magnetic flux detector, calipers
The difference between grades of neodymium magnets
The grade of sintered NdFeB permanent magnet material consists of three parts: the first part is the main name, which is simplified by the chemical symbol of neodymium element ND as N, the second part is the nominal value of the maximum magnetic energy product (BH)max of the material, and the third part is the letter indicating the maximum working temperature of the magnet.
N
All industries.
M
Mainly used in medical magnet, electroacoustic, home appliance, voice coil motor, electronic products, IT and other fields, with ambient temperature between 80-100 degrees.
H
Mainly used in the field of motors and sensors, servo motor magnets, linear motor magnets, robot joint drive motor magnets, new energy vehicle motors, sunroof motors, etc., the use of ambient temperature between 100-120 degrees.
SH
high endowment coercivity, mostly used in wind turbines, industrial motors and other places with high requirements for magnetic properties. For example: servo motor magnets, robot joint drive motor magnets, machine tool motor magnets, other motor magnets, etc.
UH
mostly used in automobile motors and air conditioning compressors. Servo motor magnets,, oil pump motors, starter motors, generators, ignition coils, gearboxes, elevator permanent magnet traction machines, and coreless vibration motors.
EH
The best performance EH grade is used in the field of hybrid cars, solenoid valves and sensors. It is widely used in servo motor magnets, new energy vehicle motors, camera sensors, ignition coils, and gearboxes.
AH
New energy automobile motors, industrial motors, air conditioning compressors, EPS, sensors, aerospace and other industrial fields.
The performance & grade of neodymium magnet
- Test temperature 23℃±3℃. The tolerance of test result is no more than 5%.
- Working Temperatures: The real working temperature must be less than the following Working Temperatures,Otherwise the magnetic force would be weakened
- Remanence(Br) : Bigger Br with bigger magnetic force.Normally,The magnetic force is inspected through checking Remanence(Br) by Guass meter for quality control process
- Max. Energy Product(BH): 1 MGOe =1 M Gauss.Oersted / BH Max.=BR*Hcb
| Material | Remanence(Br) | Coercive Force(Hcb) | Intrinsic Coercive Force(Hcj) | Max. Energy Product(BH Max.) | Working Temperatures | |
|---|---|---|---|---|---|---|
| Serial NO. | Grade | Kilogauss | Kilooersted | Kilooersted | MGOe | ℃ |
| N | N30 | 10.8-11.2 | 9.8-10.5 | ≥12 | 28-30 | ≤80 |
| N33 | 11.4-11.7 | 10.3-11.0 | ≥12 | 31-33 | ≤80 | |
| N35 | 11.7-12.1 | 11.0-11.3 | ≥12 | 33-35 | ≤80 | |
| N38 | 12.2-12.6 | 11.0-11.6 | ≥12 | 36-38 | ≤80 | |
| N40 | 12.6-12.9 | 11.0-11.6 | ≥12 | 38-40 | ≤80 | |
| N42 | 13.0-13.3 | 11.0-11.6 | ≥12 | 40-42 | ≤80 | |
| N45 | 13.3-13.7 | 11.0-11.6 | ≥12 | 43-45 | ≤80 | |
| N48 | 13.6-14.2 | 11.0-11.6 | ≥12 | 45-48 | ≤80 | |
| N50 | 14.1-14.5 | 10.4-11.4 | ≥11 | 48-50 | ≤70 | |
| N52 | 14.4-14.8 | 10.4-11.4 | ≥11 | 49.5-52 | ≤70 | |
| M | N35M | 11.7-12.1 | 11.2-11.5 | ≥14 | 33-35 | ≤100 |
| N38M | 12.2-12.6 | 11.4-11.7 | ≥14 | 36-38 | ≤100 | |
| N40M | 12.6-12.9 | 11.4-11.9 | ≥14 | 38-40 | ≤100 | |
| N42M | 13.0-13.3 | 11.4-11.9 | ≥14 | 40-42 | ≤100 | |
| N45M | 13.3-13.7 | 11.4-12.0 | ≥14 | 42-45 | ≤100 | |
| N48M | 13.6-14.2 | 11.4-12.0 | ≥14 | 45-48 | ≤100 | |
| N50M | 14.1-14.5 | 11.4-12.2 | ≥14 | 48-50 | ≤100 | |
| H | N33H | 11.4-11.7 | 10.3-11.0 | ≥17 | 31-33 | ≤120 |
| N35H | 11.7-12.1 | 10.8-11.4 | ≥17 | 33-35 | ≤120 | |
| N38H | 12.2-12.6 | 11.4-11.9 | ≥17 | 36-38 | ≤120 | |
| N40H | 12.6-12.9 | 11.4-11.9 | ≥17 | 38-40 | ≤120 | |
| N42H | 13.0-13.3 | 11.4-11.9 | ≥17 | 40-42 | ≤120 | |
| N45H | 13.3-13.7 | 11.4-11.9 | ≥17 | 43-45 | ≤120 | |
| N48H | 13.6-14.2 | 11.4-12.2 | ≥16 | 45-48 | ≤110 | |
| SH | N30SH | 10.8-11.2 | 10.1-10.6 | ≥20 | 28-30 | ≤150 |
| N33SH | 11.4-11.7 | 10.3-11.0 | ≥20 | 31-33 | ≤150 | |
| N35SH | 11.7-12.1 | 10.8-11.4 | ≥20 | 33-35 | ≤150 | |
| N38SH | 12.2-12.6 | 11.4-11.9 | ≥20 | 36-38 | ≤150 | |
| N40SH | 12.6-12.9 | 11.4-11.9 | ≥20 | 38-40 | ≤150 | |
| N42SH | 13.0-13.3 | 11.4-11.9 | ≥20 | 40-42 | ≤150 | |
| N45SH | 13.3-13.7 | 11.4-11.9 | ≥19 | 43-45 | ≤140 | |
| UH | N28UH | 10.4-10.8 | 9.8-10.2 | ≥25 | 26-28 | ≤180 |
| N30UH | 10.8-11.2 | 10.1-10.6 | ≥25 | 28-30 | ≤180 | |
| N33UH | 11.4-11.7 | 10.3-11.0 | ≥25 | 31-33 | ≤180 | |
| N35UH | 11.7-12.1 | 10.8-11.4 | ≥25 | 33-35 | ≤180 | |
| N38UH | 12.2-12.6 | 11.4-11.9 | ≥25 | 36-38 | ≤180 | |
| N40UH | 12.6-12.9 | 11.4-11.9 | ≥25 | 38-40 | ≤180 | |
| EH | N28EH | 10.4-10.8 | 9.8-10.2 | ≥30 | 26-28 | ≤200 |
| N30EH | 10.8-11.2 | 10.1-10.6 | ≥30 | 28-30 | ≤200 | |
| N33EH | 11.4-11.7 | 10.3-11.0 | ≥30 | 31-33 | ≤200 | |
| N35EH | 11.7-12.1 | 10.8-11.4 | ≥30 | 33-35 | ≤200 | |
| N38EH | 12.2-12.6 | 10.8-11.4 | ≥30 | 36-38 | ≤200 | |
| AH | N30AH | 10.8-11.2 | 10.1-10.6 | ≥35 | 28-30 | ≤240 |
we’re here to all your questions
What are the advantages of our products, is there a minimum MQO?
Entity manufacturer, perfect service, high-quality raw materials, stable structure, mature technology, advanced equipment, and the best cost performance. We do not have a minimum order quantity.
What are the factors that affect the price of magnets?
Material cost: The higher the performance requirements, the higher the cost, such as NdFeB magnets, the price of N45 is much higher than the price of N35;
Processing cost: the more complex the shape, the higher the processing cost;
Dimensional tolerance: The tighter the tolerance, the higher the processing cost; the smaller the batch, the higher the processing cost.
What are the application scope of the magnets we produce
Our products are widely used in electronic and electrical components, TWS headphones, motors, speakers, compasses, maglev trains, induction cookers, generators, toys, luggage, automotive new energy, underwater operations, aerospace and other industries. Inside and outside, and won unanimous praise from customers.
Why some customers have weakened or disappeared after receiving the magnet products?
The biggest factor affecting magnetic attenuation is temperature. The maximum working temperature of M series magnets is 80°C. If the container is shipped by sea in summer, the temperature of the container is too high, which is expected to reach 70-80°C, which will cause the magnetic force to weaken or disappear.
What information do I need to provide when ordering magnets?
The biggest factor affecting magnetic attenuation is temperature. The maximum working temperature of M series magnets is 80°C. If the container is shipped by sea in summer, the temperature of the container is too high, which is expected to reach 70-80°C, which will cause the magnetic force to weaken or disappear.
What are the material grades of neodymium magnets?
Neodymium magnets are available in different grades such as N35, N38, N42, N52, N35UH.. etc. Each shape of neodymium magnet is graded according to its material. The magnetic force increases with the level and size of the magnet (the number after the “N”). The current highest grade is N52. The letter after the grade represents the high temperature resistance of the magnet. Magnets without letters after the grade are the standard temperature for magnets and the most widely used on the market.
How to choose the high temperature resistant magnet correctly?
1. Choose NdFeB high temperature resistant magnets between 80°C and 230°C working temperature,
2. Choose samarium cobalt high temperature resistant magnets between 250 degrees and 350 degrees
3. At present, only ferrite magnets or AlNiCo magnets can be selected for high-temperature magnets with a working temperature above 350 degrees.
Can you produce customized products, customized process
We can customize different types of magnets, and our engineers will provide you with a suitable magnetic solution according to your requirements. The customized process is pre-sales consultation, manufacturer quotation, product proofing, sample confirmation, contract signing, production, settlement and delivery, after-sales service
Request a quote for your next magnetic project
Become a partner of GP Magnets and astounding quality & unbelievable costs bring you more profits.
- One-stop magnet solution, from development, sampling to production
- Reasonable china magnetic parts price
- More than 15 years experience of magnetic products manufacturer china
- Fast reaction and Professional Communication