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CERAMIC (HARD FERRITE) MAGNETS
Ceramic magnets made of Barium and Strontium Ferrite has been available since
the 1950's. Their principal advantage is that they are very inexpensive and
they have great magnetic and environmental stability. Ceramic magnets are
brittle, very hard, black in color, and are very resistant to corrosion.
Due to their low cost, Ferrite magnets enjoy a very wide range of applications, from motors and loudspeakers to toys and crafts, and are the most widely used permanent magnets today.
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Sintered
Ceramic Magnets
|
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| Adobe Acrobat Reader |
|
Grade |
Max. Energy Product |
Remanence
|
Coercive Force |
Curie
Temp.
|
|||||
(BH)max |
Br |
Hc |
Hci |
Tc |
|||||
| MGOe | kJ/m3 | kG | mT | kOe | kA/m | kOe | kA/m | °C | |
| 1A | 0.9-1.1 | 7.1-9.0 | 2.0-2.4 | 200-235 | 1.6-2.0 | 135-160 | 2.8-3.1 | 210-250 | 450 |
| 2A | 2.7-3.0 | 21.0-24.0 | 3.4-3.6 | 340-360 | 2.7-3.0 | 215-240 | 2.9-3.4 | 235-270 | 450 |
| 3 | 2.7-3.0 | 21.0-24.0 | 3.4-3.6 | 340-360 | 2.8-3.0 | 220-240 | 3.0-3.5 | 240-280 | 450 |
| 4A | 3.5-3.8 | 27.7-30.0 | 3.8-4.0 | 375-400 | 3.0-3.2 | 240-260 | 3.2-3.5 | 250-280 | 450 |
| 4B | 3.7-4.1 | 29.0-31.8 | 3.9-4.1 | 390-410 | 2.5-3.0 | 200-240 | 2.8-3.2 | 224-254 | 450 |
| 5A | 3.0-3.2 | 23.5-25.2 | 3.5-3.7 | 350-370 | 3.2-3.5 | 254-280 | 3.9-4.2 | 310-335 | 450 |
| 5B | 3.0-3.2 | 23..5-25.2 | 3.3-3.6 | 330-360 | 3.3-3.5 | 260-280 | 4.2-4.5 | 330-360 | 450 |
| 5X | 4.0-4.4 | 31.8-35.0 | 4.1-4.3 | 410-430 | 3.2-3.5 | 251-275 | 3.2-3.5 | 255-279 | 450 |
| 5N | 4.4-4.8 | 35.1-38.3 | 4.3-4.5 | 430-450 | 2.7-3.0 | 215-239 | 2.7-3.0 | 217-241 | 450 |
| 5H | 3.7-4.1 | 29.5-32.7 | 4.0-4.2 | 395-415 | 3.6-3.9 | 287-310 | 3.9-4.2 | 310-343 | 450 |
| 5E | 3.1-3.5 | 24.7-27.9 | 3.6-3.8 | 360-380 | 3.4-3.7 | 271-295 | 4.8-5.1 | 382-406 | 450 |
ISO 9001:2008 Quality Standard Certified
Special properties can be achieved with custom method.
Physical and Mechanical Properties
Compressive Strength |
1.4 x 104 kg/cm2 |
Required Magnetizing Field |
12,000 - 15,000 Oe |
Electrical Resistivity |
>
104 µ-ohm-cm/cm2
|
Density |
4.7-5.0 g/cm3 |
Recoil Permeability |
1.05 µr |
Rev. Temp. Coeff. |
-0.20 %/°C |
NdFeB
Magnets | SmCo Magnets | Bonded
Magnets | Alnico Magnets | Ceramic
Magnets | Flexible Magnets | Magnetic
Assemblies
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