Ceramic Magnets
Ceramic Magnets (Ferrite)
Ceramic magnets (also known as "Ferrite" magnets) are part of the permanent magnet family, and the lowest cost, hard magnets available today. Composed of strontium carbonate and iron oxide, ceramic magnets are medium in magnetic strength and can be used at fairly high temperatures. In addition, they are corrosion-resistant and easy to magnetize, making them the popular choice for a wide range of consumer, commercial, industrial and technical applications.
Magnet Shop carries a large inventory of ceramic disc, ceramic block (rectangular & square), and ceramic ring and ceramic round cup magnets, available for immediate purchase in a wide range of shapes and sizes. We can also custom manufacture ceramic magnets to fit your exact specifications, just let us know what you are looking for by sending us a request for quote or contact us today, and we'll work with you to determine the most economical solution for your project.
Click on the images below for pricing & sizes:
Features & Characteristics of Ceramic Magnets
Ceramic magnets are medium in magnetic strength, inexpensive and can be used at fairly high temperatures, so they are a popular choice for all types of consumer, commercial, industrial and technical applications.
Ceramic Magnets Technical Data
| Ceramic Magnets Technical Data |
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| Grade: 5 |
| Shapes: Blocks & Bars |
| Magnetization: Magnetized Through Thickness (THK) |
| Br: 3,950 Gauss |
| BHmax: 3.60 MGOe |
| Hc: 2,400 Oersteds |
| Hci: 2,450 Oersteds |
| Max Operating Temperature: 592ºF/300ºC |
| Curie Temp: 842ºF/450ºC |
| Density (lb/in3): 0.178 |
Magnet Ratings
Magnets are typically rated by their residual induction, coercive force & maximum energy product. Click here for more details (section 4.0). This refers to the maximum strength that the magnetic material can be magnetized to.
Ceramic Magnet Grades & Shapes
Ceramic Grades 5 (most commonly used) through 8 are available in disc, block (rectangle & square) and ring shapes, and can be custom manufactured to meet your specialty requirements.
Temperature Considerations for Ceramic Magnets
Ceramic magnets can be used at fairly high temperatures, although their magnetic properties drop with temperature. At 175°C (350° F), approximately 75% of their room temperature magnetic properties are retained.
Ceramic Magnets Manufacturing Methods
Ceramic magnets require special machining techniques, and should be machined in an “un-magnetized” state. We are fully equipped to machine these materials to your specifications, just let us know what you are looking for by sending us a special request. Ceramic magnets do not need to be protected for surface rust. A thin film of magnet powder on the surface is common.
Ceramic Magnets Bonding Methods
Ceramic magnets are often assembled into products using "superglues" such as Loctite 325 or other epoxies. Please always ensure that bonding surfaces are clean and dry prior to bonding.
Safety Precautions for Ceramic Magnets
Ceramic Magnets are hard & brittle, and they can chip or break if dropped or snapped together, so please take special care when handling these magnets!
Common Applications for Ceramic Magnets
Ceramic (Ferrite) magnets are the lowest cost hard magnets available today, they have excellent resistance to oxidation and do not typically require additional protective coatings or finishes. They are the preferred choice for all types of consumer, commercial and industrial applications. Common applications for ceramic magnets include:
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Custom Orders for Ceramic Magnets
We can custom manufacture ceramic magnets to exact specifications using our in-house manufacturing facilities and experienced team of engineers. Contact us or send us a request for quote and we'll help you determine the most economical solution for your project. For more technical applications, our sister company, Integrated Magnetics specializes in custom magnets & magnetic assemblies.
