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Hard ferrite magnets, also known as ceramic magnets, are made primarily from iron oxide (Fe₂O₃) combined with barium or strontium carbonate. They are produced through sintering or pressing methods to form strong, permanent magnets.
| Technical data of sintered Permanent Ferrite（SJ285-77） | ||||||||||
| Material | Grade | Remanence | Coercive Force | Intrinsic Coercive | Maximum Energy product | |||||
| Br | Hcb | Hcj | (BH)max | |||||||
| mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | |||
| Sintered Ferrite |
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 | 2.14-2.39 | 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 | 380-400 | 3.8-4.0 | 175-210 | 2.20-2.64 | 180-220 | 2.26-2.77 | 26.0-30.0 | 3.3-3.8 | ||
| Y30BH | 380-400 | 3.8-4.0 | 223-235 | 2.80-2.95 | 231-245 | 2.90-3.08 | 27.0-30.0 | 3.3-3.8 | ||
| Y30H-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 | ||
| Y30H-2 | 395-415 | 3.95-4.15 | 275-300 | 3.46-3.77 | 310-335 | 3.90-4.21 | 28.5-32.5 | 3.5-4.1 | ||
| 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 | 400-440 | 4.0-4.4 | 176-224 | 2.22-2.8 | 180-230 | 2.26-2.89 | 30.3-33.4 | 3.8-4.2 | ||
| Technical data of sintered Permanent Ferrite（TDK ferrite magnets） | ||||||||||
| Material | Grade | Remanence | Coercive Force | Intrinsic Coercive | Maximum Energy product | |||||
| Br | Hcb | Hcj | (BH)max | |||||||
| mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | |||
| Sintered Ferrite |
FB40 | 410+/-10 | 4.1+/-0.1 | 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 | 395+/-15 | 3.95+/-0.15 | 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 | 375+/-15 | 3.75+/-0.15 | 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 | 375+/-15 | 3.75+/-0.15 | 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 | 220+/-15 | 2.20+/-0.15 | 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 | 405+/-10 | 4.05+/-0.10 | 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 | 420+/-10 | 4.20+/-0.1 | 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 | 400+/-10 | 4.00+/-0.1 | 254.6+/-11.9 | 3.2+/-0.15 | 262.6+/-19.9 | 3.3+/-0.25 | 30.3+/-1.6 | 3.8+/-0.2 | ||
| FB4A | 410+/-10 | 4.10+/-0.1 | 175.1+/-15.9 | 2.2+/-0.2 | 176.7+/-15.9 | 2.22+/-0.2 | 31.8+/-1.6 | 4.0+/-0.2 | ||
| FB6N | 440+/-10 | 4.40+/-0.1 | 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 | 420+/-10 | 4.20+/-0.1 | 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 | 400+/-10 | 4.00+/-0.1 | 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 | 380+/-10 | 3.80+/-0.1 | 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 | 440+/-10 | 4.40+/-0.1 | 256.8+/-11.9 | 2.85+/-0.15 | 229.2+/-11.9 | 2.88+/-0.15 | 36.7+/-1.6 | 4.6+/-0.2 | ||
| FB5B | 420+/-10 | 4.20+/-0.1 | 262.6+/-11.9 | 3.3+/-0.15 | 266.6+/-11.9 | 3.35+/-0.15 | 33.4+/-1.6 | 4.2+/-0.2 | ||
| Technical data of sintered Permanent Ferrite（USA） Permanent ferrite magnet industry standard of USA |
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| Material | Grade | Remanence | Coercive Force | Intrinsic Coercive | Maximum Energy product | |||||
| Br | Hcb | Hcj | (BH)max | |||||||
| mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | |||
| Sintered Ferrite |
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 | 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 | 288 | 3.617 | 280 | 3.51 | 30.4 | 3.82 | ||
| C11 | 430 | 4.3 | 200 | 2.512 | 204 | 2.56 | 34.4 | 4.32 | ||
| Technical data of sintered Permanent Ferrite（IEC404-8-1） | ||||||||||
| The IEC404-8-1 Performance & Density Value Of Permanent Ferrite Magnet From Internatioal Electricians Committee | ||||||||||
| Material | Grade | Remanence | Coercive Force | Intrinsic Coercive | Maximum Energy product | |||||
| Br | Hcb | Hcj | (BH)max | |||||||
| mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | |||
| Sintered Ferrite |
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 | ||
*Note: The maximum operating temperature and other performance characteristics of a magnet are dependent on the specific material type, magnetic circuit, and application conditions. The values provided above are guidelines for each material type under standard conditions. For example, the Curie temperature (the temperature at which a magnet loses its magnetism and cannot be remagnetized) varies significantly among different materials: Alnico magnets typically have higher Curie temperatures (e.g., 860°C for some grades), while standard neodymium magnets have a Curie temperature around 310°C (590°F). Always refer to the specific material grade and application requirements for accurate performance limits. If you need further assistance with selecting the right material or understanding the temperature limits for your specific application, please contact our technical support. Data Sheet
Neodymium magnets are widely used in the following fields:
High-performance NdFeB and ferrite magnets provide stable magnetic solutions for servo motors, sensors, and magnetic chucks.
Magnetic products are widely used in EV drive motors, sensors, and ABS systems, meeting strict automotive industry standards.
High-fidelity magnetic materials for speakers, microphones, earphones, and smartphone vibration motors.
Magnetic solutions for wind turbines, solar inverters, and energy storage systems supporting sustainable development.
Reliable magnetic products used in compressor motors, refrigerator door seals, and various small household appliances
Precision magnetic components for MRI systems, medical sensors, and laboratory automation devices.
High-temperature resistant magnets designed for avionics, navigation systems, and defense-grade applications.
Customized magnetic components that enhance motion control precision and sensing accuracy in modern robotics.
We offer customized NdFeB magnet solutions tailored to your requirements.
Explore our other high-performance magnetic materials and components
NdFeB magnets, also known as neodymium magnets, are rare-earth permanent magnets made from an alloy of neodymium, iron, and boron. They are the strongest commercially available permanent magnets, offering extremely high magnetic energy products.
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Magnetic assemblies integrate magnets with metal and non-metal components to create functional products or semi-finished parts, such as motor rotors, sensors, magnetic filters, lifters, pumps, and speakers. Sunight Magnetics specializes in converting customer designs into high-quality magnetic assemblies. Through professional assembly services and integrated supply chains, we help reduce costs, shorten production time, and improve manufacturing efficiency.
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Samarium Cobalt (SmCo) magnets are rare earth permanent magnets and part of the lanthanide alloy family, similar to NdFeB magnets. They are available in various grades to suit different applications, providing designers with high magnetic strength, excellent thermal stability, and good corrosion resistance.
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Automotive Quality Management System for products supplied to the automotive industry.
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We carry a large inventory of Hard Ferrite magnet in assorted sizes and shapes, not all of which is shown on this website. In addition, we can custom manufacture Hard Ferrite magnet to your exact specifications. Contact us today or send us a special request, and our experienced team of engineers will work with you to determine the best solution for your specialty project.