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Hard Ferrite Magnet

Hard ferrite magnet is a kind of permanent magnet, which is composed of iron oxide, barium and strontium elements. It is the most commonly used permanent magnet material due to its low cost, easy to produce, excellent corrosion and demagnetization resistance properties.

Hard ferrite magnet can be divided into anisotropic type and isotropic type. Anisotropic hard ferrite magnet must be magnetized in the direction of pressing, while isotropic one can be magnetized in any direction.

Though hard ferrite magnet owns excellent corrosion and demagnetization resistance properties, it is hard and brittle which means special machining techniques and tools must be utilized for its production.

Applications
Hard ferrite magnet is quite popular in electrical engineering, electronic information, car industry, motorcycle industries, medical treatment, mining and metallurgy, industrial automation, oil energy and civil industries.

 
 
 

IEC60404-8-1

 
Material Craft Magnetic Performance kg/dm3
Grade *) Code
Name
(BH)max
kj/m3
Br
mT
Hcb
kA/m
Hcj
kA/m
rec a(Br)**) %/ a(Hcj)**) %/ Curie
temperature
Permanent Ferrite Magnet Minimum Value Typical Value
Hard ferrite7/21 i S1-0-1 Sintered 6.5 190 125 210 1-2 -0.2 0.25-0.4 450 4.9
Hard ferrite20/19 a S1-1-1 20 320 170 190 1-1 4.8
Hard ferrite24/23 a S1-1-2 24 350 215 230 4.8
Hard ferrite25/14 a S1-1-3 25 380 130 135 5
Hard ferrite26/18 a S1-1-4 26 370 175 180 5
Hard ferrite22/30 a S1-1-5 22 350 255 295 4.6
Hard ferrite26/26 a S1-1-6 26 370 230 260 4.7
Hard ferrite29/22 a S1-1-7 29 390 210 220 4.8
Hard ferrite32/17 a S1-1-8 32 410 160 165 4.9
Hard ferrite32/25 a S1-1-9 32 410 240 250 4.9
Hard ferrite24/35 a S1-1-10 24 360 260 350 4.8
Hard ferrite29/15 a S1-1-11 29 400 145 150 5
Hard ferrite25/38 a S1-1-12 25 380 275 380 4.95
Hard ferrite31/30 a S1-1-13 31 410 295 300 4.95
Hard ferrite35/25 a S1-1-14 35 430 245 250 4.95
 

We, China Ceramic & Ferrite Permanent Magnet Co., can provide you with various shapes and grades of hard ferrite magnets. If you want to know more details, please feel free to contact us at any time.

 
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