Alnico Disc Magnets

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Sintered & Cast Alnico Disc Magnets

Alnico magnets are part of the permanent magnet family and relatively high in magnetic strength. Grade 8 Alnico Disc Magnets offer excellent temperature stability & can be used at temperatures up to 1000⁰F (500⁰C). Because of their temperature stability and relatively high magnetic strength, they are commonly used for industrial applications such as rotating machinery, meters, instruments, sensing devices holding applications and more. We carry a range of alnico 8 sintered & cast disc magnets, not all of which are shown on this website.

Alnico Disc Magnets for Sale

Magnet Shop offers licensed alnico disc magnets available for online purchase at bulk discounted prices. From smaller size disc magnets measuring 0.25” in diameter to larger cylinder magnets up to 0.75” in diameter.

We carry a large inventory of alnico disc & rod/cylinder magnets, not all of which are shown on this website. Contact us today or send us a special request and let us know what you are looking for.

Special Request Contact Magnet Shop

* $15.00 total minimum order (excluding shipping & tax if applicable) - Items can be combined to reach the minimum amount.

Alnico Disc Magnet Features & Characteristics

Cast Alnico 8 Disc Magnet Technical Data Sintered Alnico 8 Disc Magnet Technical Data
Grade: 8 Grade: 8
Type: Cast Type: Sintered
Magnetization: Through the Thickness (THK) Magnetization: Through the Thickness (THK)
Br: 8,300 Gauss Br: 7,000 Gauss
BHmax: 5.5 MGOe BHmax: 5 MGOe
Hc: 1,650 Oersteds Hc: 1,900 Oersteds
Max Operating Temperature: 1004ºF/540ºC Max Operating Temperature: 1004ºF/540ºC
Curie Temp: 1580ºF/860ºC Curie Temp: 1580ºF/860ºC
Density (lb/in3): 0.265 Density (lb/in3): 0.253

Standard Dimensional Tolerances for Alnico Disc Magnets

Standard diameter tolerances for Alnico Magnets based on the following dimensions:

  • +/- 0.005” on both diameter and thickness dimensions ranging from 0.040” to 1.000”.
  • +/- 0.010” on both diameter and thickness dimensions ranging from 1.001” to 2.000”.
  • +/- 0.015” on both diameter and thickness dimensions ranging from 2.001” to 3.000”.


Manufacturing Methods for Alnico Magnets

Alnico disc magnets are manufactured through either a casting or sintering process, so they can be made into complex shapes such as horseshoes, which is not possible to do with other magnet materials. Top

Alnico Disc Magnet Applications

Guitar Pick Ups Wind Turbine Equipment Pipeline Inspection Equipment Industrial Automation Equipment Military Radar Equipment

Alnico magnets are relatively high in magnetic strength, offer excellent temperature stability and can be used in temperatures up to 1000°F (500°C), so they are ideal for many types of industrial manufacturing applications. In addition, Alnico magnets are manufactured through a casting or sintering process, so they can be made into complex shapes, not possible to achieve with other magnet materials. They are routinely used in the oil and gas, medical, aerospace military and defense, industrial automation, automotive, and manufacturing industry. top

  • Guitar Pick-Ups
  • Electrical Motors
  • Bearings
  • Traveling Wave Tubes
  • Aerospace Components
  • Rotating Machinery
  • Sensors & Sensing Devices
  • Meters & Instruments
  • Harsh Environment Equipment
  • High Temperature Handling Equipment
  • Heat Treatment Jigs
  • Medical Devices
  • Industrial Machinery
  • Microphones
  • Robotics
  • Communications
  • Industrial Automation Equipment
  • Actuators
  • Military Radar Equipment
  • Magnetors
  • Security Systems & More
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Custom Orders for Alnico Disc Magnets

We carry a large inventory of Alnico 5 rod magnets and Alnico 8 disc magnets in various sizes and thicknesses, not all of which are listed on this website. We can also custom machine these to your exact specifications. Just let us know what you are looking for by sending a request for quote or contact us today to discuss your specialty project. Our sister company, Integrated Magnetics, has over 60 years of expertise in manufacturing complex magnetic assemblies for more technical applications. (top)

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