Ferrite(Ceramic) magnets are composed of strontium carbonate and iron oxide and their shapes include blocks, discs, rings, cylinders, arc segments and other special shapes and their main characteristics are 1)much more cheaper than neodymium magnets; 2)high intrinsic coercive force; 3)lower energy product; 4)will not rust itself, so no finish needed.
Applications: Loudspeakers, Magnetic Couplings, Sensors, DC brushless motors, DC permanent magnet motors, Seperators, Used in lifting, holding, retrieving and seperating assemblies etc.
Magnetic Property of Ferrite magnets
Chinese Standard |
Material | Br | 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 | 3.8~390 | 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 |
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USA STANDARD
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Material | Br | HcB | HcJ | (BH)max | mT | KG | KA/m | KOe | KA/m | KOe | Kj/m3 | MGOe | C1 | 230 | 2.3 | 148 | 1.86 | 258 | 3.5 | 8.36 | 1.05 | C5 | 380 | 3.8 | 191 | 2.4 | 199 | 2.5 | 27 | 3.4 | C7 | 340 | 3.4 | 258 | 3.23 | 318 | 4.00 | 21.9 | 2.75 | C8(=C8A) | 385 | 3.85 | 235 | 2.95 | 242 | 3.05 | 27.8 | 3.5 | C8B | 420 | 4.2 | 232 | 2.913 | 236 | 2.96 | 32.8 | 4.12 | C9 | 380 | 3.8 | 280 | 3.516 | 320 | 4.01 | 26.4 | 3.32 | C10 | 400 | 4.0 | 288 | 3.617 | 280 | 3.51 | 30.4 | 3.82 | C11 | 430 | 4.3 | 200 | 2.512 | 204 | 2.56 | 34.4 | 4.32 |
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EUROPE STANDARD
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The standard from International Electronics Committee(IEC404-8-1) |
Material | Allowed Value (min/typical) | Br | HcB | Hcj(IHC) | (BH)max | mT | KG | KA/m | KOe | KA/m | KOe | Kj/m3 | MGOe | HF8/22 | 200/220 | 2.00/2.20 | 125/140 | 1.57/1.76 | 220/230 | 2.76/2.89 | 6.5/6.8 | 0.8/1.1 | HF20/19 | 320/333 | 3.20/3.33 | 170/190 | 2.14/2.39 | 190/200 | 2.39/2.51 | 20.0/21.0 | 2.5/2.7 | HF20/28 | 310/325 | 3.10/3.25 | 220/230 | 2.76/2.89 | 280/290 | 3.52/3.64 | 20.0/21.0 | 2.5/2.7 | HF22/30 | 350/365 | 3.50/3.65 | 255/265 | 3.20/3.33 | 290/300 | 3.64/3.77 | 22.0/23.5 | 2.8/3.0 | HF24/16 | 350/365 | 3.50/3.65 | 155/175 | 1.95/2.20 | 160/180 | 2.01/2.26 | 24.0/25.5 | 3.0/3.2 | HF24/23 | 350/365 | 3.50/3.65 | 220/230 | 2.76/2.89 | 230/240 | 2.89/3.01 | 24.0/25.5 | 3.0/3.2 | HF24/35 | 360/370 | 3.60/3.70 | 260/270 | 3.27/3.39 | 350/360 | 4.40/4.52 | 24.0/25.5 | 3.0/3.2 | HF26/16 | 370/380 | 3.70/3.80 | 155/175 | 1.95/2.20 | 160/180 | 2.01/2.26 | 26.0/27.0 | 3.2/3.4 | HF26/18 | 370/380 | 3.70/3.80 | 175/190 | 2.20/2.39 | 180/190 | 2.26/2.39 | 26.0/27.0 | 3.3/3.4 | HF26/24 | 370/380 | 3.70/3.80 | 230/240 | 2.89/3.01 | 240/250 | 3.01/3.14 | 26.0/27.0 | 3.3/3.4 | HF26/26 | 370/380 | 3.70/3.80 | 230/240 | 2.89/3.01 | 260/270 | 3.27/3.39 | 26.0/27.0 | 3.3/3.4 | HF26/30 | 385/395 | 3.85/3.95 | 260/270 | 3.27/3.39 | 300/310 | 3.77/3.89 | 26.0/27.0 | 3.3/3.4 | HF28/26 | 385/395 | 3.85/3.95 | 250/265 | 3.14/3.33 | 260/275 | 3.27/3.45 | 28.0/30.0 | 3.5/3.8 | HF28/28 | 385/395 | 3.85/3.95 | 260/270 | 3.27/3.39 | 280/290 | 3.50/3.60 | 28.0/30.0 | 3.5/3.8 | HF30/26 | 395/405 | 3.95/4.05 | 250/260 | 3.14/3.33 | 260/270 | 3.27/3.39 | 30.0/31.5 | 3.8/3.9 | HF32/17 | 410/420 | 4.10/4.20 | 160/180 | 2.01/2.26 | 165/175 | 2.07/2.20 | 32.0/33.0 | 4.0/4.1 | HF32/22 | 410/420 | 4.10/4.20 | 215/225 | 2.70/2.83 | 220/230 | 2.76/2.89 | 32.0/33.0 | 4.0/4.1 | HF32/25 | 410/420 | 4.10/4.20 | 240/250 | 3.01/3.14 | 250/260 | 3.14/3.27 | 32.0/33.0 | 4.0/4.1 |
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