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Sintered Nd Magnet
Bonded Nd Magnet
　
        Sintered Nd Magnet                  Bonded Nd Magnet                         Application                       Magnet Knowledge
Bonded Nd Magnet   
Bonded magnetic powder is mixed with binders through a series of process (compression, injection, calendering, extrusion). Bonded Nd Magnet, as a new type of composite permanent magnetic materials, has an extensive application areas. It is widely applied in the computer HDD spindle drive motor, CDROM, DVD spindle motor, computer and peripheral types of stepper motors, stepper motor air-conditioning, electronic information products, various types of micro-vibration motors, speakers, car motors, etc.                
　
Characteristics Units BNM-5 BNM-6 BNM-7 　BNM-8 BNM-9
　  Br(Residual induction) mT 570-620 580-630 590-640 620-670 640-690
　 　 KGs 5.7-6.2 5.8-6.3 5.9-6.4 6.2-6.7 6.4-6.9
　 Hcj(Intrinsic Coercive Force) KA/m 560-720 640-800 640-800 680-800 680-800
　 　 KOe 7.0-9.0 8.0-10.0 8.0-10.0 8.5-10.0 8.5-10.0
　  Hcb(Coercive Force) KA/m 288-320 322-376 360-416 400-464 410-448
　 　 KOe 3.6-4.0 4.0-4.7 4.5-5.2 5.0-5.8 5.2-5.6
　  (BH)max(Maximum Energy Product) KL/m³ 40-48 48-56 56-64 64-72 68-76
　 　 MGOe 5.0-6.0 6.0-7.0 7.0-8.0 8.0-9.0 8.5-9.5
　  Recoil Permeability Urec 　 1.15 1.15 1.15 1.2 1.2
　 Saturation Magnetizing Force    Hs KA/m ≥1600 ≥1600 ≥1600 ≥1600 ≥1600
　 　 KOe ≥20 ≥20 ≥20 ≥20 ≥20
　 Density (Without coating) g/cm³ 5.8-6.2 5.8-6.2 5.8-6.2 5.8-6.2 5.8-6.2
　 Reversible temp coefficient α(Br) %/℃ -0.13 -0.13 -0.13 -0.12 -0.13
　 Curie Temperature Tc ℃ 360 360 360 305 306
　 Max.operating Temperature   Tw ℃ 120 120 120 120 120
　Characteristics 　Units BNM-10 BNM-11 BNM-11L BNM-12L 　BNM-8SR    
　 Br(Residual induction) mT 670-720 690-740 700-750 750-800 　620-670    
　 　 KGs 6.7-7.2 6.9-7.4 7.0-7.5 7.5-8.0 　6.2-6.7    
　 Hcj(Intrinsic Coercive Force) KA/m 680-800 720-840 520-640 520-640 　880-1120    
　 　 KOe 8.5-10.0 9.0-10.5 6.5-8.0 6.5-8.0 　11.0-14.0    
　 Hcb(Coercive Force) KA/m 416-480 400-464 400-464 432-496 　400-464    
　 　 KOe 5.2-6.0 5.0-5.8 5.0-5.8 5.4-6.2 　5.0-5.8    
　 (BH)max(Maximum Energy Product) KL/m³ 72-80 80-88 80-88 84-92 　64-72    
　 　 MGOe 9.0-10.0 10.0-11.0 10.0-11.0 10.5-11.5 　8.0-9.0    
　 Recoil Permeability Urec 　 1.2 1.2 1.2 1.2 　1.15    
　 Saturation Magnetizing Force    Hs KA/m ≥1600 ≥1600 ≥1600 ≥1600 　≥2000    
　 　 KOe ≥20 ≥20 ≥20 ≥20 　≥25    
　 Density (Without coating) g/cm³ 5.8-6.2 5.8-6.2 5.8-6.2 5.8-6.2 　5.8-6.2    
　 Reversible temp coefficient α(Br) %/℃ -0.11 -0.11 -0.11 -0.08 　-0.13    
　 Curie Temperature Tc ℃ 360 360 325 345 　305    
　 Max.operating Temperature   Tw   ℃ 120 120 120 120 　≥150    
　Characteristics 　 BNM-12
　 Br(Residual induction) mT 740-760
　 　 KGs 7.4-7.6
　 Hcj(Intrinsic Coercive Force) KA/m 720-840
　 　 KOe 9.0-10.5
　 Hcb(Coercive Force) KA/m 456-512
　 　 KOe 5.7-6.4
　 (BH)max(Maximum Energy Product) KL/m³ 88-96
　 　 MGOe 11.0-12.0
　 Recoil Permeability Urec 　 1.2
　 Saturation Magnetizing Force    Hs KA/m ≥1600
　 　 KOe ≥20
　 Density (Without coating) g/cm³ 5.8-6.2
　 Reversible temp coefficient α(Br) %/℃ -0.11
　 Curie Temperature Tc ℃ 360
　 Max.operating Temperature   Tw ℃ 120

B-H CURVE   

Note:
The above-mentioned data of magnetic parameters and physical are gives at 23℃.+/-3℃.

　
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