Iron oxide magnetite
2019-12-05
Ferrite Magnet / Ceramic Magnet is a permanent magnet mainly made by mixing iron oxide (Fe2O3) and strontium carbonate (SrCO3) and sintering at high temperature. Iron oxide magnets have low cost, mold processing can be mass-produced, and have excellent corrosion resistance, suitable for use in harsh environments, still the most widely used magnet in today's motors.
Features
1. Excellent corrosion resistance, the magnet does not need special coating.
2. Due to the influence of the manufacturing process, the sintered iron oxide has a large tolerance, which is generally positive and negative 2%.
3. The operating temperature range of iron oxide is -40 ℃ ~ 250 ℃.
4. Widely used in audio equipment, ordinary motors, motorcycle motors, automotive motors and green energy industries, such as: amplifiers, DC motors, compressors for air conditioning, starter motors for wind power and other products.
| Grade | Br | bHc | iHc | BHmax | Equivalent Standard | Application |
|---|---|---|---|---|---|---|
| NF4A | 3.90~4.10 KG 390~410 mT | 2.20~2.60 KOe 175~207 KA/m | 2.25~2.65 KOe 179~211 KA/m | 3.20~3.60 MGOe 25.5~28.7 KJ/m3 | FB4A Y30 | Speaker Receiver |
| NF4B | 3.90~4.10 KG 390~410 mT | 3.00~3.40 KOe 239~287 KA/m | 3.05~3.45 KOe 247~271 KA/m | 3.40~3.80 MGOe 27.1~30.3 KJ/m3 | YBM-2B/Y30BH Ceramic8/FB4B | DC Motor |
| NF4B-H | 3.95~4.15 KG 395~415 mT | 3.30~3.65 KOe 263~291 KA/m | 3.50~3.80 KOe 279~303 KA/m | 3.60~4.00 MGOe 28.7~31.8 KJ/m3 | YBM-5BD/ 4036 | DC Motor |
| NF4D | 4.00~4.20 KG 400~420 mT | 2.70~3.00 KOe 215~239 KA/m | 2.75~3.05 KOe 219~243 KA/m | 3.70~4.10 MGOe 29.6~32.8 KJ/m3 | FX4D 4129/C8D | DC Motor |
| NF4X | 4.15~4.35 KG 415~435 mT | 2.70~3.00 KOe 215~239 KA/m | 2.75~3.05 KOe 219~243 KA/m | 3.90~4.30 MGOe 31.2~34.4 KJ/m3 | YBM-5BB FB4X/4229 | Alternator Flywheel |
| NF5H-L | 3.70~3.90 KG 370~390 mT | 3.30~3.65 KOe 263~291 KA/m | 3.85~4.15 KOe 307~330 KA/m | 3.60~3.80 MGOe 28.7~30.3 KJ/m3 | YBM-2BE FB5H(lower) | |
| NF5H | 3.90~4.10 KG 390~410 mT | 3.40~3.70 KOe 271~295 KA/m | 3.85~4.10 KOe 307~326 KA/m | 3.70~4.10 MGOe 29.6~32.8 KJ/m3 | FB5H/4040 YBM-5BF | DC Motor |
| NF6E | 3.70~3.90 KG 370~390 mT | 3.50~3.80 KOe 279~303 KA/m | 4.80~5.10 KOe 382~406 KA/m | 3.20~3.60 MGOe 25.5~28.7 KJ/m3 | YBM-5BF FB6E/3850 | DC Motor |
| NF6B | 4.10~4.30 KG 410~430 mT | 3.55~3.85 KOe 283~307 KA/m | 3.85~4.15 KOe 307~330 KA/m | 4.00~4.40 MGOe 31.8~35.2 KJ/m3 | YBM-6BD FB6B/4240 | Automotive |
| NF6N | 4.30~4.50 KG 430~450 mT | 3.10~3.40 KOe 247~271 KA/m | 3.15~3.45 KOe 251~275 KA/m | 4.40~4.80 MGOe 35.2~38.4 KJ/m3 | Y-36 FB6N/4433 | |
| NF6H | 3.90~4.10 KG 390~410 mT | 3.60~3.90 KOe 287~310 KA/m | 4.35~4.65 KOe 347~370 KA/m | 3.60~4.00 MGOe 28.7~31.8 KJ/m3 | YBM-6BF FB6H/4045 | Automotive DC Motor |
| NF9H | 4.20~4.40 KG 420~440 mT | 3.70~4.10 KOe 294~326 KA/m | 4.85~5.15 KOe 386~410 KA/m | 4.20~4.60 MGOe 33.4~36.6 KJ/m3 | YBM-9BF FB9H/4350 | Automotive DC Motor |
| NF9B | 4.40~4.60 KG 440~460 mT | 4.00~4.40 KOe 318~350 KA/m | 4.35~4.65 KOe 347~370 KA/m | 4.60~5.00 MGOe 36.6~39.8 KJ/m3 | YBM-9BE FB9B/4545 | Automotive DC Motor |
| NF9N | 4.50~4.70 KG 450 ~ 470 mT | 3.20~3.50 KOe 255~279 KA/m | 3.45~3.75 KOe 275~299 KA/m | 4.80~5.20 MGOe 38.3~41.5 KJ/m3 | NMF-9D FB9N/4636 | Automotive DC Motor |
| NF12H | 4.50~4.70 KG 450~470 mT | 4.15~4.45 KOe 330~360 KA/m | 5.25~5.55 KOe 415~445 KA/m | 5.0~5.40 MGOe 39.8~43.0 KJ/m3 | FB12H 4654 | Automotive DC Motor |
| NF12B | 4.60~4.80 KG 460~480 mT | 4.15~4.40 KOe 328~352 KA/m | 4.65~4.95 KOe 368~392 KA/m | 5.20~5.60 MGOe 41.5~44.7 KJ/m3 | FB12B 4748 | Automotive DC Motor |
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