Full series of neodymium magnet materials with different processes, grades and specifications. Standard stock & custom machining available.
AlNiCo, an early-developed permanent magnet alloy, consists of Al, Ni, Co, Fe and trace metals.
Sintered AlNiCo
Small size, tight blank dimensional tolerance, slightly lower magnetic properties than cast AlNiCo, good machinability
Cast AlNiCo
Can be made into various sizes and shapes, lowest reversible temperature coefficient, operating temperature over 550℃
Applications
Motors, electric guitar pickups, microphones, sensors, speakers, traveling wave tubes, cow magnets, various instruments and meters
AlNiCo Magnet
| Item | NdFeB Magnet | SmCo Magnet | Alnico Magnet |
|---|---|---|---|
| Max Temp | 80-220℃ | 350℃ | 500-550℃ |
| Magnetic Strength | Ultra High | High | Low |
| Temperature Stability | Medium | Excellent | Good |
| Corrosion Resistance | Poor | Excellent | Good |
| Brittleness | Brittle | Brittle | Tough |
| Cost | Medium | High | Medium |
| Best Application | General High Performance | High Temp & Precision | Ultra High Temp |
Key Features & Advantages
Alnico magnets have high magnetic strength and energy but low coercivity. They are less brittle than rare-earth magnets, with excellent corrosion resistance and temperature stability, and can work at very high temperatures. Made by casting or sintering, they can be made into complex shapes (such as horseshoe) that other magnets cannot.
Customization
Grade 5 and Grade 8 are the most common alnico grades. We can customize almost any shape and size according to your drawings from sintered or cast materials. Contact us for a quote and we will provide the most cost-effective solution.
Processing Notes
Alnico magnets are hard and brittle, easy to crack. They need careful processing and are not suitable for structural or decorative use. Regular machining is not applicable; cutting and grinding must be done before magnetization, and holes need EDM. We can process them as your drawings require.
Surface Treatment
Alnico magnets usually need no coating or plating due to good corrosion resistance.
AlNiCo has great natural corrosion resistance.
Coating is usually unnecessary. Nickel or epoxy coating is optional for harsh corrosive environments.
Extremely stable. They have negligible demagnetization over decades under normal conditions, with consistent performance across temperature fluctuations.
Mainly used in instruments, sensors, speakers, motors, automotive, aerospace and high-temperature precision devices.
Raw material, grade, shape complexity, tolerance, coating, magnetization type, and order volume
Samples: 7–15 days
Mass production: 15–25 days
MOQ: 1000–5000pcs (depends on size and shape)
Per batch: dimension, magnetic performance, temp resistance, salt spray, visual inspection.
AQL standard available
Yes.
We offer custom shapes (disc, block, ring, arc), grades, magnetizations, tolerances, and coatings to meet your requirements.
Samples are free for in-stock items. A sample fee applies to out-of-stock items, which is fully creditable against your bulk order.
Shipping cost is on your side.
AlNiCo has lower magnetic strength but highest temperature resistance and excellent stability, suitable for high-temperature low-demanding scenarios.
FAQ
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