Dailymag Sintered Ferrite Magnet
The sintered ferrite magnets are a cost-effective substitute for metallic magnets. They manifest low energy with hard and proportionally brittle characteristics. These magnets have extreme resistance to corrosion, demagnetization, and economical price. Also, the sintered ferrite is the most preferred magnet for magnetic separators, DC motors, and auto sensors. Various hard ferrite magnet elements include strontium and barium.
Physical Properties
| Configuration | Unit | Worth |
| Compression Strength | N/mm2 | 680 to 720 |
| Electrical Resistance | mΩ·cm | 1×1010 |
| Flexural Capacity | Pa | 62×106 |
| Curie Temperature | ℃ | 450 |
| Density | g/cm3 | 4.9 to 5.1 |
| Thermal Expansion Coefficient | 10-6/°C | C⊥: 10, C∥15. |
| Thermal Conductivity | W/(cm·℃) | 0.029 |
| Hardness | D.P.N | 400 to 700 |
| Tensile Strength | Pa | 34 x 106 |
| Elasticity Modulus | Pa | 1.8 x 1011 |
The sintered ferrite rotor ring magnets are processed by bending, cutting, molding, etc. They come with customized magnetism directions.
The sintered ferrite neodymium magnets come with various coatings, like epoxy, gold, passivated, etc., available in different magnetic grades.
Sintered ferrite anisotropic magnets have customizable sizes and grades. They are designed with block, rectangle, or square shapes.
Industrial sintered ferrite magnets are suitable for televisions, speakers, medical machines, ammeter, and audio. They are customizable.
Sintered ferrite magnets with high conductivity are available in different shapes, depending on customers’ demands. Y10-Y35 are grade options.
The sintered permanent ferrite magnets are produced using punching, molding, decoiling, etc. They have customizable specifications.
Sintered Ferrite Magnet By Shape
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Sintered Ferrite Arc Magnet -
Sintered Ferrite Block Magnet -
Sintered Ferrite Disc Magnet -
Sintered Ferrite Ring Magnet
Features and Advantages
The sintered ferrite magnets come with a black surface and consistent magnetic features. That becomes the main advantage of a sintered ferrite magnet. Their series, including the injected molded ones, are formed by molding production. These magnets have two types, anisotropic and isotropic. The two have differences that need to consider.
The isotropic ones are weaker magnets but with larger molds that save cost. On the other hand, anisotropic magnet molds are more costly than isotropic. These sorts of sintered ferrite magnets have relatively powerful magnetic properties.
Sintered Ferrite Magnet Manufacturing Process
Dailymag professionally performs the following manufacturing procedures.
- Weighing & Mixing
- Palletizing
- Pre-sintering
- Coarse crushing
- Fine crushing
- Dry or wet process
- Dehydration or dispersion
- Molding
- Drying and sintering
- Machining and magnetization
Sintered Ferrite Magnet and Bonded Ferrite Magnet Differences
Even though these magnets are classified as ferrite types, the contrast between the two plays a major part. The differences include:
- Bonded ferrite magnet is produced with ceramic technology, the most common type. And Sintered ferrite magnets are manufactured with molding and injection methods.
- The utmost working temperature for both ferrite magnets works differently. Bonded ferrite magnets extend up to 180°C and Sintered ferrite magnets reach up to 250°C.
- Sintered ferrite magnets have a hard texture but meet the product’s objectives of working in high-temperature environments. It has stable performance, unlike Bonded ferrite magnets.
Magnetic Properties (Chinese Standard)
| Material Grade | Br | Hcb | Hcj | (BH)max |
| Y10T | 200 to 235mT; 2.0 to 2.35KGs | 125 to 160 KA/m; 1.57 to 2.01KOe | 210 to 280KA/m to 2.64 to 3.52KOe | 6.5 to 9.5KJ/m3; 0.8 to 1.2 MGOe |
| Y20 | 320 to 380mT; 3.2 to 3.8KGs | 135 to 190KA/m; 1.70 to 2.38KOe | 140 to 195KA/m; 1.76 to 2.45KOe | 18.0 to 22.0KJ/m3; 2.3 to 2.8MGOe |
| Y23 | 32o to 370mT; 3.2 to 3.7KGs | 170 to 190KA/m; 2.14 to 2.38KOe | 190 to 230KA/m; 2.39 to 2.89KOe | 20.0 to 25.5KJ/m3; 2.5 to 3.2MGOe |
| Y30 | 370 to 400mT; 3.7 to 4.0KGs | 175 to 210KA/m; 2.20 to 2.64KOe | 180 to 220KA/m; 2.26 to 2.77KOe | 26.0 to 30.0KJ/m3; 3.3 to 3.8MGOe |
| Y32 | 400 to 420mT; 4.0 to 4.2KGs | 160 to 190KA/m; 2.01 to 2.38KOe | 165 to 195KA/m; 2.07 to 2.45KOe | 30.0 to 33.5KJ/m3; 3.8 to 4.2MGOe |
| Y33 | 410 to 430mT; 4.1 to 4.3 KGs | 220 to 250KA/m; 2.77 to 3.14KOe | 225 to 255KA/m; 2.83 to 3.21KOe | 31.5 to 35.0KJ/m3; 4.0 to 4.4MGOe |
| Y35 | 400 to 410mT; 4 to 4.10KGs | 175 to 195 KA/m; 2.20 to 2.45KOe | 180 to 200KA/m; 2.26 to 2.51KOe | 30.0 to 32.0KJ/m3; 3.8 to 4.0MGOe |
| Y22H | 310 to 360mT; 3.1 to 3.6KGs | 220 to 250KA/m; 2.77 to 3.14KOe | 280 to 320KA/m; 3.52 to 4.02KOe | 20.0 to 24.0KJ/m3; 2.5 to 3.0MGOe |
| Y26H | 369 to 390mT; 3.6 to 3.9 KGs | 220 to 250KA/m; 2.77 to 3.14KOe | 140 to 200KA/m; 2.83 to 3.21KOe | 23.0 to 28.0KJ/m3; 2.9 to 3.5MGOe |
| Y30BH | 380 to 390mT; 3.8 to 3.9KGs | 275 to 300KA/m; 2.80 to 2.95KOe | 231 to 245KA/m; 3.90 to 4.21KOe | 27.0 to 30.0KJ/m3; 3.4 to 3.7MGOe |
