Sintered NdFeB permanent magnet contains basic raw materials neodymium (Nd) 32%, iron (Fe) 64%, boron (B) 1%, , with small amount of dysprosium (Dy), terbium (Tb), cobalt (Co) , niobium (Nb), gallium (Ga), aluminum (Al), copper (Cu) and other elements, Sintered NdFeB permanent magnetic materials with the high remanence, high coercivity, and was known as the " Magnetic King" The main characteristics of permanent magnetic materials is : good magnetic properties , high temperature performance. High Curie temperature,up to 710 ~ 880 degrees Celsius, the maximum operating temperature up to 250 ~ 350 degrees Celsius. So the stability of permanent magnet magnetic material is best, it is suitable for manufacturing various high-performance permanent magnet electro-acoustic devices.
MAGNETIC AND PHYSICAL CHARACTERISTICS (NdFeB)
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| No. | TYPE | Remanence Br | Coercive-force bHc | Intrinsic coercive force iHc | Max. energy product (BH) max | Working Temperature | | KGs | T | KOe | KA/m | KOe | KA/m | MGOe | KJ/m³ | 0C |
32 | N28UH | 10.4-10.8 | 1.04-1.08 | 9.8-10.2 | 780-812 | ≥25 | ≥1990 | 26-28 | 207-223 | ≤180 | 33 | N30UH | 10.8-11.2 | 1.08-1.12 | 10.1-10.6 | 804-844 | ≥25 | ≥1990 | 28-30 | 223-239 | ≤180 | 34 | N35UH | 11.7-12.1 | 1.17-1.21 | 10.5-11.2 | 836-890 | ≥25 | ≥1990 | 33-35 | 263-278 | ≤180 | 35 | N38UH | 12.2-12.6 | 1.22-1.26 | 11.4-11.9 | 907-947 | ≥25 | ≥1990 | 36-38 | 287-303 | ≤180 |
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