Xiamen Hitech Magnetics Co., Ltd. is one of the leading manufacturers and suppliers of cast alnico5 ring magnet for high temperature use in China, also supports customized service. We have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy bulk advanced cast alnico5 ring magnet for high temperature use from our factory.
Most of the magnets in our catalog are NdFeB or ferrite - strong, cost-effective, but limited to moderate operating temperatures. This AlNiCo5 ring magnet is different. Cast rather than sintered, it holds its magnetic properties at temperatures up to 600°C, a range that simply isn't accessible to rare-earth or ceramic materials. If your application runs hot - furnace-adjacent sensors, high-temperature instrumentation, or classic AlNiCo speaker magnetic circuits - this is the material built for it.
Material And Manufacturing
AlNiCo5 gets its name from its core composition - aluminum, nickel, cobalt, plus iron and trace elements. Unlike our NdFeB and ferrite lines which are pressed and sintered, this grade is cast, a process better suited to AlNiCo's metallurgy and its higher operating temperature ceiling. Density comes in at 7.4g/cm³, and dimensional tolerance is held to ±0.05mm on the standard D25x20mm ring size. Custom diameters, heights, and even alternate geometries (rod, bar, rotor, horseshoe) can be produced from the same base material.
Where AlNiCo Still Wins
Rare-earth magnets have taken over most general-purpose applications, but AlNiCo hasn't disappeared - it's simply moved into the niches where its specific properties matter most. Working temperature up to 600°C covers use cases that would demagnetize NdFeB (typically capped around 80-150°C) or degrade ferrite well before reaching that range. That makes it a practical choice for high-temperature sensors and instrumentation near industrial heat sources. It's also the traditional material for speaker magnetic circuits, valued for a tonal character that ferrite and NdFeB alternatives don't quite replicate - a reason many audio engineers still specify AlNiCo by name.
Customization
HIMAGNET produces this ring magnet to your drawing or sample. Minor dimensional changes, full drawing-based customization, or sample-matching are all available depending on how far your design has progressed. Lead time runs around 30 days for orders up to 1,000 pieces; larger volumes are quoted on request based on tooling and casting capacity. Pricing steps down meaningfully at higher volumes - from $0.38 per piece in the 1,000-9,999 range down to $0.25 at 10,000 pieces and above.
Handling Notes
Cast AlNiCo magnets are mechanically harder and more brittle than machined steel but generally more chip-resistant than sintered NdFeB under impact - still, avoid letting pieces snap together at speed, and plan mounting around adhesive or mechanical retention rather than relying on magnetic force alone to hold position under vibration. Quality is backed by ISO/TS16949:2002 and ISO14001:2004 certification, with CE and RoHS compliance for the finished product.
Common Questions
Why choose AlNiCo over NdFeB here?
Primarily operating temperature. If your application stays under 150°C, NdFeB usually offers more pull force per size. Above that range, AlNiCo keeps working where NdFeB would lose magnetization.
Can you match a legacy speaker magnet's dimensions?
Yes - send a drawing or physical sample and we'll confirm feasibility and lead time before production.
What's the minimum order?
Standard batch pricing starts at 1,000 pieces; smaller trial quantities can be discussed directly with our team.
Brand: HIMAGNET
Grade: Alnico5
Composite: Alnico Magnet
Technology: Cast
Density: 7.4g/cm³
Shape: Ring (customizable)
Type: Permanent
Tolerance: ±0.05mm
Working Temperature: Up to 600°C
Size: D25x20mm or Custom
Place of Origin: Fujian, China
Processing Service: Moulding
Quality System: ISO/TS16949:2002
Certification: CE, RoHS
Lead Time: 30 days (1-1000pcs)
Hot Tags: cast alnico5 ring magnet for high temperature use, manufacturers, suppliers, factory, customized
