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The elements of Ferrite magnet are ferric oxide、barium、strontium. Ferrite has higher coercive force and higher resistance to be demagnetized and oxidized than other non-rare earth permanent magnets. The biggest advantage of such magnet is their low cost. It is widely used from motors and loudspeakers to toy and crafts etc…
Magnetic Properties of Ferrite
MaterialBr HcB HcJ (BH)max mT KG KA/m KOe KA/m KOe Kj/m³ MGOe Y10T 200~235 2.0~2.35 125~160 1.57~2.01 210~280 2.64~3.52 6.5~9.5 0.8~1.2 Y20 320~380 3.2~3.8 135~190 1.70~2.38 140~195 1.76~2.45 18.0~22.0 2.3~2.8 Y22H 310~360 3.1~3.6 220~250 2.77~3.14 280~320 3.52~4.02 20.0~24.0 2.5~3.0 Y23 320~370 3.2~3.7 170~190 2.14~2.38 190~230 2.39~2.89 20.0~25.5 2.5~3.2 Y25 360~400 3.6~4.0 135~170 1.70~2.14 140~200 1.76~2.51 22.5~28.0 2.8~3.5 Y26H 360~390 3.6~3.9 220~250 2.77~3.14 225~255 2.83~3.21 23.0~28.0 2.9~3.5 Y27H 370~400 3.7~4.0 205~250 2.58~3.14 210~255 2.64~3.21 25.0~29.0 3.1~3.7 Y30 370~400 3.7~4.0 175~210 2.20~2.64 180~220 2.26~2.77 26.0~30.0 3.3~3.8 Y30BH 380~390 3.8~3.90 223~235 2.80~2.95 231~245 2.90~3.08 27.0~30.0 3.4~3.7 Y30-1 380~400 3.8~4.0 230~275 2.89~3.46 235~290 2.95~3.65 27.0~32.0 3.4~4.0 Y20-2 395~415 3.95~4.15 275~300 3.46~3.77 310~335 3.90~4.21 28.5~32.5 3.5~4.0 Y32 400~420 4.0~4.2 160~190 2.01~2.38 165~195 2.07~2.45 30.0~33.5 3.8~4.2 Y33 410~430 4.1~4.3 220~250 2.77~3.14 225~255 2.83~3.21 31.5~35.0 4.0~4.4 Y35 400~410 4.00~4.10 175~195 2.20~2.45 180~200 2.26~2.51 30.0~32.0 3.8~4.0 Note:
the max. size that we can manufacture block is 270x90x32mm, disc is dia152.4x25.4mm, ring is dia316-170x30mm
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