Customized Rectangler Alnico Magnet Block
| Material | Aluminum (Al), Nickel (Ni), Cobalt (Co) | |
|
Grade |
Alnico 5, Alnico 8, Alnico 9, etc. | |
| Max operating temperature | Up to 500℃ - 550℃ | |
| Size | Customized according to customer drawings | |
| Shape | Block, cylinder, disc, ring, arc, segment, horseshoe, special-shaped parts | |
| Plating | Customized (Ni, Epoxy, Passivation, etc.) | |
| Size Tolerance | Cast products ±0.1~0.5mm; sintered products ±0.05~0.1mm; machined products ±0.01~0.05mm | |
| Density | 6.9 ~ 7.3 g/cm³ | |
| Br | 0.70 ~ 1.35 T | |
| Hcj | 80 ~ 220 kA/m | |
| (BH)max | 80 ~ 220 kA/m | |
| Magnetization | Axially, Diametrally | |
| Applications | Alnico magnets are widely used in instruments, aerospace, automotive electronics, acoustic components, sensors and high-temperature equipment where stable magnetic properties under high temperature are required. |
Cast & sintered Alnico magnets are produced through melting, casting or compacting, high-temperature sintering, heat treatment and precision machining.With ultra-high temperature stability, excellent corrosion resistance and good machinability, they are suitable for long-term use in high-temperature and harsh environments.
1.Processing Adaptability
Alnico magnets are hard and brittle. They are only suitable for processing by grinding and EDM/wire-cutting; conventional turning, milling, and tapping are not applicable.
2.Processing Equipment & Capability
We are equipped with precision grinding machines, high-speed wire-cut EDM machines, and diamond drilling equipment, supporting small-batch trial production and mass production with stable processing consistency.
-Mechanical Processing
Grinding, cutting and surface finishing to achieve tight dimensional tolerances and excellent flatness.
-EDM & Special Profile Processing
Suitable for complex precision parts with low stress.
-Drilling & Special Shaping
Dedicated diamond tools and custom fixtures are used for drilling and countersinking to avoid chipping and cracking.
3.Shape
We produce various shapes, including blocks, cylinders, discs, rings, arcs, segments, horseshoe magnets and special-shaped parts. Complex profiles for high-temperature instruments, sensors and acoustic equipment can be customized according to drawings.
4.Surface Treatment
Alnico has excellent inherent corrosion resistance; coating is usually unnecessary.
Common options: Passivation, Ni plating, Epoxy coating.
5.Magnetization Direction
Supports axial and diametral magnetization only.
Multi-pole magnetization is not recommended due to low coercivity and easy demagnetization.
6.Application Fields
- High-temperature instruments and meters
- Aerospace, automotive electronics, precision sensors
- Acoustic components, speakers, guitar pickups
- Industrial automation, magnetic couplings, high-temperature equipment
- Medical devices, precision positioning components
7.Compliance, safety, and high quality
- Comply with RoHS, REACH
- Magnetic test report, dimension inspection report available
- Strict inspection on dimensions, magnetic properties and appearance
How to get a best quote?
After confirming the above details or if you have any futher questions, we would love to receive your email or messages. We will calcualte the price ASAP according to your order/sample quantity,and respond to your concerns.
