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What is ferrite magnets

Ferrite magnets are a large class of magnets that include chemical compounds such as hematite (Fe23) and magnetite (Fe3O4), which is the most magnetic naturally occurring mineral on Earth. Every ferrite magnet is a ceramic, and of course a magnet, meaning it attracts other ferromagnetic materials and attracts or repels other magnets. A ferrite magnet is the most simple type of magnet, in contrast to more sophisticated magnets like Alnico magnets or neodymium magnets (rare-earth magnets). Ferrite magnets are permanent magnets, unlike electromagnets which are only magnetic when supplied with an electric current.Ferrite magnets, also known as ferromagnetic materials, are generally classified into two categories based on their magnetic coercivity, or persistence of internal magnetism: soft ferrites and hard ferrites. These categorizations do not refer to the actual hardness of the magnets -- both types are brittle ceramics -- but rather their magnetic coercivity. Depending on whether a magnet is soft or hard, it may have different applications. For instance, a hard ferrite magnet might be used in a radio or a hard disk. A soft ferrite magnetic would be used as a transformer core or an electromagnet core.Ferrite magnets are used often used as permanent magnets or as ferrite cores for electromagnets. Ferrite magnets are non conductive (meaning they do not transmit electricity). Ferrite magnets are magnets that are a mix of ceramic materials and chemicals, with iron oxide as its primary ingredient. However, they can contain a mix of oxides from other metals as well.



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Grade Br HcB HcJ (BH)max Work Temp
China Standard IEC standard mT kA/m(min.) kA/m(min.) kJ/m(min.) ℃(max.)
Y10T HF 8/22 200-235 125-160 210-280 6,5-9,5 250
Y20 HF 20/19 320-380 135-190 140-195 18,0-22,0 250
Y22H HF 20/28 310-360 220-250 280-320 20,0-24,0 250
Y23 HF 22/30 320-370 170-190 190-230 20,0-25,0 250
Y25 HF 24/16 360-400 135-170 140-200 22,5-28,0 250
Y26H HF 24/23 360-390 220-250 225-255 23,0-28,0 250
Y26H-2 HF 24/35 360-380 263-288 318-350 24,0-28,0 250
Y28 HF 26/16 370-400 175-210 180-220 26,0-30,0 250
Y25H HF 26/18 360-390 175-215 215-230 24,0-27,0 250
Y28H HF 26/24 380-400 240-260 250-280 27,0-30,0 250
Y28H-2 HF 26/26 360-380 270-295 380-405 26,0-30,0 250
Y30 HF 28/16 380-385 190-210 200-220 26,0-28,0 250
Y30BH HF 28/28 380-400 230-275 235-290 27,0-32,0 250
Y30H-2 HF 30/26 395-415 275-300 310-335 28,5-32,5 250
Y32 HF 32/17 400-420 160-190 165-195 30,0-33,5 250
Y33 HF 32/22 410-430 220-250 225-255 31,5-35,0 250
Y33H HF 32/25 410-430 240-270 250-275 31,5-35,0 250
Y35 - 410-430 175-195 180-200 30,0-32,0 250

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