Ferrite disk magnets are circular magnets with a flat profile made from iron oxide-based ceramic material. These magnets are widely recognized for their low cost, stable performance, and high resistance to environmental factors. The simple round shape is easy to integrate into various products, making them one of the most commonly used types of ceramic magnets.
They are typically used in audio equipment, magnetic holders, toys, and small electronic appliances.
Ferrite disk magnets are durable and function well across a broad temperature range. While their magnetic strength is lower than that of neodymium magnets, they provide a reliable solution for low to medium power applications that don’t require ultra-strong magnets.
Why choose Ferrite Disk Magnet
● Affordable and accessible: An excellent choice for budget-conscious designs.
● Non-conductive: Suitable for electronic applications where insulation is needed.
● Chemical stability: Will not corrode or degrade in humid environments.
● Versatile design: Simple round shape fits into many product types.
● Environmentally friendly: No plating or toxic materials used in manufacturing.
Ferrite disk magnets are widely used in audio speakers, refrigerator magnets, promotional items, educational kits, and small motors. Their cost-effectiveness and resistance to wear make them an excellent choice for high-volume applications where performance and economy must be balanced.
Physical Characteristics
Material | Br | Hcb | Hcj | (BH)max | Remarks | ||||
(Gs) | (mT) | (Oe) | (kA/m) | (Oe) | (MGOe) | (kJ/m)3 | |||
KV2130 | 2000-2350 | 200-235 | 1570-2009 | 125-160 | 2637-3516 | 210-280 | 0.81-1.19 | 6.5-9.5 | HF8/22、Y8T、C1、FB1A |
KV2330 | 2200-2400 | 220-240 | 1695-2198 | 135-175 | 3491-4019 | 278-320 | 1.06-1.39 | 8.5-11.1 | Y10T |
KV3337 | 3100-3600 | 310-360 | 2763-3140 | 220-250 | 3516-4019 | 280-320 | 2.5-3.5 | 20-24 | HF20/28、Y22H |
KV3631 | 3500-3800 | 350-380 | 2826-3140 | 225-250 | 2951-3265 | 235-260 | 3.1-3.7 | 24.7-29.5 | HF25/22、Y26H-1 |
KV3640 | 3500-3700 | 350-370 | 3100-3500 | 247-279 | 3800-4300 | 303-342 | 2.8-3.4 | 22.3-27.1 | C7、PMF-2BB |
KV3730 | 3600-3900 | 360-390 | 2512-3140 | 200-250 | 2836-3202 | 225-255 | 2.9-3.5 | 23.1-27.9 | HF22/30、Y27H |
KV3742 | 3600-3800 | 360-380 | 3303-3617 | 241-288 | 3994-4396 | 318-350 | 3.0-3.5 | 23.9-27.9 | HF24/35、Y26H-2 |
KV3749 | 3600-3800 | 360-380 | 3391-3705 | 270-295 | 4797-5086 | 382-405 | 3.3-3.8 | 26.3-30.3 | Y28H-2 |
KV3820 | 3600-4000 | 360-400 | 1695-2135 | 135-170 | 1758-2512 | 140-200 | 2.8-3.5 | 22.3-27.9 | HF25/14、Y25 |
KV3825 | 3700-4000 | 370-400 | 2198-2637 | 175-210 | 2260-2763 | 180-220 | 2.9-3.8 | 23.1-30.3 | HF26/18、Y28 |
KV3828 | 3700-4000 | 370-400 | 2300-2700 | 183-215 | 2500-3000 | 199-239 | 2.9-3.8 | 23.1-30.3 | C5 |
KV3838 | 3700-4000 | 370-400 | 3200-3600 | 255-287 | 3700-4100 | 263-326 | 3.0-3.7 | 23.9-29.5 | C9 |
KV3849 | 3700-3900 | 370-390 | 3100-3500 | 246-279 | 4800-5200 | 382-415 | 3.1-3.7 | 24.7-29.5 | Y28H-2、FB6E、PMF-2BF |
KV3926 | 3800-4000 | 380-400 | 2300-2700 | 183-215 | 2400-2800 | 191-223 | 3.4-4.0 | 27.1-31.8 | Y30 |
KV3930 | 3800-4050 | 380-405 | 2800-3200 | 223-255 | 2900-3300 | 230-263 | 3.4-4.0 | 27.1-31.8 | HF26/26、Y30H-1、Y30BH |
KV3934 | 3800-4000 | 380-400 | 3000-3400 | 238-270 | 3200-3600 | 255-287 | 3.5-4.0 | 22.3-31.8 | C8、PMF-2BD |
KV3939 | 3800-4000 | 380-400 | 3200-3600 | 255-287 | 3800-4200 | 303-334 | 3.2-4.0 | 25.5-31.8 | HF26/30、PMF-2BE |
KV4026 | 3900-4100 | 390-410 | 2300-2700 | 183-215 | 2400-2800 | 191-223 | 3.3-4.0 | 26.3-31.8 | HF32/17 |
KV4030 | 3900-4100 | 390-410 | 2800-3200 | 223-255 | 2900-3300 | 230-263 | 3.5-4.1 | 22.3-32.6 | FB3N、C8A |
KV4034 | 3900-4100 | 390-410 | 3000-3400 | 238-270 | 3200-3600 | 255-287 | 3.5-4.2 | 22.3-33.4 | FB4B、C10 |
KV4038 | 3900-4100 | 390-410 | 3200-3600 | 255-287 | 3600-4000 | 287-318 | 3.6-4.2 | 28.7-33.4 | |
KV4040 | 3900-4150 | 390-415 | 3300-3700 | 263-295 | 3800-4200 | 303-334 | 3.6-4.3 | 28.7-34.2 | FB5H、Y30H-2、C12、PMF-5BE |
KV4045 | 3900-4100 | 390-410 | 3300-3700 | 263-295 | 4350-4800 | 346-382 | 3.6-4.3 | 28.7-34.2 | FB6B、PMF-6BE |
KIV4050 | 3900-4100 | 390-410 | 3400-3800 | 270-303 | 4800-5200 | 382-415 | 3.5-4.2 | 22.3-33.4 | PMF-6BE |
KV4123 | 4000-4200 | 400-420 | 2000-2400 | 159-191 | 2100-2500 | 167-199 | 3.6-4.2 | 28.7-33.4 | |
KV4126 | 4000-4200 | 400-420 | 2300-2700 | 183-215 | 2500-2900 | 199-231 | 3.6-4.3 | 28.7-34.2 | |
KV4129 | 4000-4200 | 400-420 | 2700-3100 | 215-247 | 2800-3200 | 223-255 | 3.7-4.3 | 29.5-34.2 | |
KV4132 | 4000-4200 | 400-420 | 2900-3300 | 230-263 | 3000-3400 | 238-270 | 3.7-4.3 | 29.5-34.2 | |
KV4135 | 4000-4200 | 400-420 | 3100-3500 | 246-279 | 3300-3700 | 263-295 | 3.8-4.4 | 30.3-35 | FB5B、PMF-5BD、Y33H |
KV4138 | 4000-4200 | 400-420 | 3300-3700 | 263-295 | 3600-4000 | 287-318 | 3.8-4.4 | 30.3-35 | |
KV4141 | 4000-4200 | 400-420 | 3400-3800 | 270-303 | 3900-4300 | 310-342 | 3.8-4.5 | 30.3-35.8 | |
KV4150 | 4000-4200 | 400-420 | 3400-3800 | 270-303 | 4800-5200 | 382-415 | 3.8-4.5 | 30.3-35.8 | |
KV4228 | 4100-4300 | 410-430 | 2400-2800 | 191-223 | 2600-3000 | 207-239 | 3.8-4.5 | 30.3-35.8 | |
KV4230 | 4100-4300 | 410-430 | 2600-3000 | 207-239 | 2800-3200 | 223-255 | 3.8-4.5 | 30.3-35.8 | |
KV4234 | 4100-4300 | 410-430 | 3000-3400 | 239-270 | 3200-3600 | 255-287 | 3.9-4.5 | 31-35.8 | FB4X、PMF-6BB、C11、Y33 |
KV4237 | 4100-4300 | 410-430 | 3200-3600 | 255-287 | 3500-3900 | 279-310 | 3.9-4.6 | 31-36.6 | |
KV4240 | 4100-4300 | 410-430 | 3500-3900 | 279-310 | 3800-4200 | 303-334 | 4.0-4.6 | 31.8-36.6 | PMF-7BE |
KV4245 | 4100-4300 | 410-430 | 3500-3900 | 279-310 | 4350-4800 | 346-382 | 4.0-4.6 | 31.8-36.6 | |
KV4254 | 4100-4300 | 410-430 | 3600-4000 | 287-318 | 5100-5500 | 406-438 | 4.0-4.6 | 31.8-36.6 | PMF-9BG |
KV4328 | 4200-4400 | 420-440 | 2500-2900 | 199-231 | 2600-3000 | 207-239 | 4.0-4.6 | 31.8-36.6 | |
KV4335 | 4200-4400 | 420-440 | 3200-3600 | 255-287 | 3400-3800 | 270-303 | 4.1-4.5 | 32.6-35.8 | FB6N、PMF-7BD、Y36 |
KV4350 | 4200-4400 | 420-440 | 3600-4100 | 287-326 | 4800-5200 | 382-415 | 4.1-4.7 | 32.6-37.4 | FB9H、PMF-9BF |
KV4429 | 4300-4500 | 430-450 | 2700-3100 | 215-247 | 2800-3200 | 223-255 | 4.1-4.8 | 32.6-38.2 | PMF-7BB |
KV4435 | 4300-4500 | 430-450 | 3000-3400 | 239-270 | 3300-3700 | 263-295 | 4.1-4.8 | 32.6-38.2 | |
KV4445 | 4300-4500 | 430-450 | 3700-4100 | 295-326 | 4300-4700 | 342-375 | 4.2-4.8 | 33.4-38.2 | FB9B、PMF-9BE、Y40 |
KV4450 | 4300-4500 | 430-450 | 3700-4200 | 295-334 | 4800-5200 | 382-415 | 4.1-4.8 | 32.6-38.2 | PMF-12BG |
KV4537 | 4400-4600 | 440-460 | 3100-3600 | 246-287 | 3500-4000 | 279-318 | 4.2-5.0 | 33.4-39.8 | FB9N、PMF-9BD、Y38 |
KV4647 | 4500-4700 | 450-470 | 3600-4200 | 287-334 | 4500-4900 | 358-390 | 4.3-5.2 | 34.2-41.4 | PMF-12BF |
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Sintered Ferrite Magnet Materials
Zhejiang Kaiven Magnet Co., Ltd. was founded in 1987 with a registered capital of 40.18 million yuan. It is a professional manufacturer of high-tech magnetic materials that integrates production, scientific research, and sales. The company covers an area of 76 acres with a building area of 60000 square meters. It has eight workshops including pre sintering, ball milling, forming, sintering, dry pressing, grinding processing, packaging, and metalworking, as well as two provincial-level scientific research and innovation platforms. The company specializes in the research and production of large arc magnetic tiles and ultra large and ultra-thin magnets, which are widely used in fields such as automotive motors, aviation, aerospace, air conditioning motors, audio systems, and speakers.?The specific production process flow chart is as follows:
Kaiven is committed to becoming a world-renowned supplier of permanent magnet material application solutions in the field of new generation consumer electronics and energy-saving home appliances. Welcome to visit our NdFeB ring magnet factory in China.
The company applies technologies such as casting columnar crystal growth control technology, grain refinement and micro-optimization technology, etc., and is committed to improving the consistency of powder and giving full play to the performance potential of rare earth. By improving the smelting microstructure, applying fine-grain technology, and optimizing the mixing process, etc., significantly improving the performance of NdFeB magnets.
The company has applied and improved low-oxygen magnet preparation technology and cold isostatic pressing technology, so that NdFeB magnets are in a low-oxygen state during the pressing process, and the preparation of molding blanks is continuously optimized, which effectively reduces the loss of rare earth. The application of low-temperature sintering heat treatment technology has further improved the sintering process. Adjusting the temperature to a suitable state can give full play to the performance of the formula. The representative products are high-performance N55 magnets prepared by low-oxygen technology and N38UH magnets produced by near-net molding technology.
In order to pursue the accurate precision of customer customization, the company applies high-performance ultra-thin small special-shaped permanent magnet preparation technology to carry out high-efficiency and low-loss precision machining of NdFeB blanks, breaking through the technical bottleneck of high-performance thin and small magnet processing difficulty, and Strictly control product appearance defects through intelligent image appearance automatic inspection technology to improve inspection efficiency and accuracy.
About Us
Established in 1987. With advanced technology and strong R&D capabilities, Kaiven Magnet has grown into a leading ferrite magnets and neodymium magnets manufacturer and exporter in China.
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