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Jingqiu Magnetic Electric Co.,LTD
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hollow cylinder ferrite magnet
| Price: | 0.1~10.0 USD |
| Payment Terms: | T/T,L/C |
| Place of Origin: | Zhejiang, China (Mainland) |
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Product Detail
hollow cylinder ferrite magnet
Sintered Ferrite Magnets
The hard ferrite is manufactured with SrO or BaO and Fe2O3 by ceramic process,it is also called ceramic mangets. Because of its cheaper price, and production process is relatively simple, compared with the prices of their products relatively cheap in terms of other magnets. The main raw materials of ferrite magnets is oxide, so, it could not be eroded due to the impact of chemical substances or the environment (except for acid). Therefore, the surface does not need electroplating treatment. It is mainly used in handicrafts, drawing annex, toys, motor, loud speakers.
Sintered Ferrite Magnets
Hard ferrite magnets are manufactured by a die pressing followed by sintering process which allows economic production of components in a varied array of sizes and shapes. Ferrite magnets have excellent corrosion resistance and have normal operating capabilities between -40 oC and +250 oC.
Applications of Ceramic Magnet
·Speaker magnets
·DC brushless motors
·Magnetic Resonance Imaging (MRI)
·DC permanent magnet motors (used in cars)
·Separators (separate ferrous material from
·Used in magnetic assemblies designed for lifting,
Holding,retrieving and separating
·Magnetic Door Catcher
·Instrument and Meters
·Toys
·Arts and crafts
·DC brushless motors
·Magnetic Resonance Imaging (MRI)
·DC permanent magnet motors (used in cars)
·Separators (separate ferrous material from
·Used in magnetic assemblies designed for lifting,
Holding,retrieving and separating
·Magnetic Door Catcher
·Instrument and Meters
·Toys
·Arts and crafts
Attributes of Ceramic Magnet
·High intrinsic coercive force
·Available in simple shapes only due to manufacturing process
·Lower service temperature than alnico, greater than rare earth
·Lower energy product than alnico and rare earth magnets
·High intrinsic coercive force
·Available in simple shapes only due to manufacturing process
·Lower service temperature than alnico, greater than rare earth
·Lower energy product than alnico and rare earth magnets
Attributes of Ceramic Magnet
·High intrinsic coercive force
·Available in simple shapes only due to manufacturing process
·Lower service temperature than alnico, greater than rare earth
·Lower energy product than alnico and rare earth magnets
·Available in simple shapes only due to manufacturing process
·Lower service temperature than alnico, greater than rare earth
·Lower energy product than alnico and rare earth magnets
Magnetic Properties of Sintered Ferrite Magnets
National standard
| Grade | Value | |||||||
| Br | Hcb(BHC) | Hcj(IHC) | (BH)max | |||||
| mT | KG | KA/m | KOe | KA/m | KOe | Kj/m3 | MGOe | |
| Y10T(=C1) | 200/218 | 2.00/2.18 | 125/145 | 1.57/1.82 | 210/250 | 2.64/3.14 | 6.5/8.0 | 0.8/1.0 |
| Y25 | 360/370 | 3.60/3.70 | 135/150 | 1.70/1.88 | 140/170 | 1.76/2.14 | 22.5/25.3 | 2.8/3.2 |
| Y30(=C5) | 380/385 | 3.80/3.85 | 191/210 | 2.40/2.64 | 199/220 | 2.50/2.51 | 26.0/28 | 3.4/3.7 |
| Y30BH | 380/390 | 3.80/3.90 | 223/235 | 2.80/2.95 | 231/245 | 2.90/3.08 | 27.0/30.0 | 3.4/3.7 |
| Y33 | 410/420 | 4.10/4.20 | 220/235 | 2.77/2.95 | 225/240 | 2.83/3.01 | 31.5/33.0 | 4.0/4.2 |
| 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 |
| C8(=C8A) | 385/390 | 3.85/3.90 | 235/255 | 2.95/3.20 | 242/265 | 3.05/3.33 | 27.8/30.0 | 3.5/3.7 |
| C10 | 400/410 | 4.00/4.10 | 288/300 | 3.62/3.77 | 280/287 | 3.51/3.60 | 30.4/31.9 | 3.8/4.0 |
Chinese standard
| Material | Br | HcB | HcJ | (BH)max | ||||
| mT | KG | KA/m | Oe | KA/m | Oe | Kj/m3 | MGOe | |
| Y8T | 200~235 | ≥2000 | 125~160 | ≥1570 | 210~280 | ≥2610 | 6.5~9.5 | ≥0.8 |
| Y22H | 310~360 | ≥3100 | 220~250 | ≥2770 | 280~320 | ≥3520 | 20.0~24.0 | ≥2.5 |
| Y25 | 360~400 | ≥3600 | 135~170 | ≥1700 | 140~200 | ≥1760 | 22.5~28.0 | ≥2.8 |
| Y26H-1 | 360~390 | ≥3600 | 220~250 | ≥2512 | 225~255 | ≥2830 | 23.0~28.0 | ≥2.9 |
| Y26H-2 | 360-380 | ≥3600 | 263-288 | ≥3300 | 318-350 | ≥4000 | 24.0-28.0 | ≥3.0 |
| Y27H | 370~400 | ≥3500 | 225-240 | ≥2830 | 235-260 | ≥2950 | 25.0~29.0 | ≥3.1 |
| Y28 | 370-400 | ≥3700 | 175-210 | ≥2200 | 180-220 | ≥2260 | 26.0-30.0 | ≥3.3 |
| Y28H-1 | 380-400 | ≥3800 | 240-260 | ≥3020 | 250-280 | ≥3140 | 27.0-30.0 | ≥3.1 |
| Y28H-2 | 360-380 | ≥3600 | 271-295 | ≥3400 | 382-405 | ≥1800 | 26.0-30.0 | ≥3.3 |
| 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 |
| Y30H-1 | 380~400 | ≥3800 | 230-275 | ≥2890 | 235-290 | ≥2950 | 27.0~32.5 | ≥3.4 |
| Y30H-2 | 395-415 | ≥3950 | 275-300 | ≥3460 | 310-335 | ≥3900 | 27.0~32.0 | ≥3.4 |
| Y32 | 400~420 | ≥4000 | 160~190 | ≥2010 | 165~195 | ≥2070 | 30.0~33.5 | ≥3.8 |
| Y32H-1 | 400-420 | ≥4000 | 190-230 | ≥2390 | 230-250 | ≥2890 | 34.5-35.0 | ≥4.0 |
| Y32H-2 | 400-440 | ≥4000 | 224-240 | ≥2810 | 230-250 | ≥2890 | 31.0-34.0 | ≥3.9 |
| Y33 | 410~430 | ≥4100 | 220~250 | ≥2760 | 225~255 | ≥2830 | 31.5~35.0 | ≥4.0 |
| Y33H | 410-430 | ≥4100 | 250-270 | ≥3140 | 250-275 | ≥3140 | 31.5-35.0 | ≥4.0 |
| Y34 | 420-440 | ≥4200 | 200-230 | ≥2510 | 205-235 | ≥2580 | 32.5-36.0 | ≥4.1 |
| Y35 | 430-450 | ≥4300 | 215-239 | ≥2700 | 217-242 | ≥2730 | 33.1-33.2 | ≥4.2 |
| Y36 | 440-450 | ≥4400 | 247-271 | ≥3100 | 250-374 | ≥4400 | 35.1-38.3 | ≥4.4 |
| Y38 | 440-460 | ≥4400 | 285-305 | ≥3580 | 294-310 | ≥3690 | 36.6-40.6 | ≥4.6 |
| Y40 | 450-460 | ≥4500 | 330-354 | ≥4150 | 340-360 | ≥4270 | 37.6-41.8 | ≥4.7 |
USA standard
| Material | Br | HcB | HcJ | (BH)max | ||||
| mT | KG | KA/m | KOe | KA/e | 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 |
Europe standard
The standard from International Electronics Committee(IEC404-8-1)
| Grade | Allowed Value (min/typical) | |||||||
| Br | Hcb(BHC) | 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 |
Japan TDK standard
| Grade | Composition | Br | Hcb | Hcj | BH max | ||||
| mT | kG | kA/m | kOe | kA/m | kOe | KJ/m3 | MGOe | ||
| FB40 | SrO6Fe2O3 | 410+/-10 | 4.1+/-10 | 234.8+/-11.9 | 2.95+/-0.15 | 238.7+/-15.9 | 3.0+/-0.2 | 31.4+/-1.6 | 3.95+/-0.2 |
| FB3N | SrO6Fe2O3 | 395+/-15 | 3.95+/-15 | 234.8+/-11.9 | 2.95+/-0.15 | 238.7+/-15.9 | 3.0+/-0.2 | 28.7+/-2.4 | 3.6+/-0.3 |
| FB3G | SrO6Fe2O3 | 375+/-15 | 3.75+/-15 | 254.6+/-15.9 | 3.2+/-0.2 | 270.6+/-19.9 | 3.4+/-0.25 | 25.9+/-2.4 | 3.25+/-0.3 |
| FB3X | SrO6Fe2O3 | 375+/-15 | 3.75+/-15 | 234.8+/-11.9 | 2.95+/-0.15 | 238.7+/-15.9 | 3.0+/-0.2 | 25.9+/-2.4 | 3.25+/-0.3 |
| FB1A | SrO6Fe2O3 | 220+/-15 | 2.20+/-15 | 159.2+/-15.9 | 2.0+/-0.2 | 258.6+/-19.9 | 3.25+/-0.25 | 8.9+/-1.6 | 1.1+/-0.2 |
| FB5H | SrO6Fe2O3 | 405+/-15 | 4.05+/-15 | 298.4+/-11.9 | 3.75+/-0.15 | 322.3+/-11.9 | 4.05+/-0.15 | 31.1+/-1.6 | 3.9+/-0.2 |
| FB4X | SrO6Fe2O3 | 420+/-10 | 4.20+/-10 | 234.8+/-11.9 | 2.95+/-0.15 | 238.7+/-15.9 | 3.0+/-0.2 | 33.4+/-1.6 | 4.2+/-0.2 |
| FB4B | SrO6Fe2O3 | 400+/-10 | 4.00+/-10 | 254.6+/-11.9 | 3.2+/-0.2 | 262.6+/-19.9 | 3.3+/-0.25 | 30.3+/-1.6 | 3.8+/-0.2 |
| FB4A | SrO/ BaO6Fe2O3 | 410+/-10 | 4.10+/-10 | 175.1+/-15.9 | 2.2+/-0.2 | 176.7+/-15.9 | 2.22+/-0.2 | 31.8+/-1.6 | 4.0+/-0.2 |
| FBGN | SrO6Fe2O3 | 440+/-10 | 4.40+/-10 | 258.6+/-11.9 | 3.25+/-0.15 | 262.6+/-11.9 | 3.3+/-0.15 | 36.7+/-1.6 | 4.6+/-0.2 |
| FB6B | SrO6Fe2O3 | 420+/-10 | 4.20+/-10 | 302.4+/-11.9 | 3.8+/-0.15 | 318.3+/-11.9 | 4.0+/-0.15 | 33.4+/-1.6 | 4.2+/-0.2 |
| FB6H | SrO6Fe2O3 | 400+/-10 | 4.00+/-10 | 302.4+/-11.9 | 3.8+/-0.15 | 358.1+/-11.9 | 4.5+/-0.15 | 30.3+/-1.6 | 3.8+/-0.2 |
| FB6E | SrO6Fe2O3 | 380+/-10 | 3.80+/-10 | 290.5+/-11.9 | 3.65+/-0.15 | 393.9+/-11.9 | 4.95+/-0.15 | 27.5+/-1.6 | 3.45+/-0.2 |
| FB5N | SrO6Fe2O3 | 440+/-10 | 4.40+/-10 | 256.8+/-11.9 | 2.85+/-0.15 | 2259.2+/-11.9 | 2.88+/-0.15 | 36.7+/-1.6 | 4.6+/-0.2 |
| FB5B | SrO6Fe2O3 | 420+/-10 | 4.20+/-10 | 262.6+/-11.9 | 3.3+/-0.15 | 266.6+/-11.9 | 3.35+/-0.15 | 33.4+/-1.6 | 4.2+/-0.2 |
Physical Characteristics
| 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 |
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Company Info
Jingqiu Magnetic Electric Co.,LTD [China (Mainland)]
Business Type:Manufacturer
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)
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http://www.magnets-jq.com:
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