OTHERS

Item Unit Nd-Fe-B Bond Anisotropic Rubber
Magnet
Isotropic Rubber
Magnet
Compositon Nd2Fe14B
Molding Process Compression Injection Rolling Rolling
Residual Flux Density
Br
mT 640 to 710 640 to 710 230 1370
kG 6.4 to 7.1 6.4 to 7.1 2.3 1.37
Coercive Force
bHc
kA/m 570 to 760 410 to 620 135 102
KOe 5.7 to 7.6 4.1 to 6.2 1.7 1.28
Intrinsic Coercive Force
iHc
kA/m 370 to 470 250 to 400
KOe 4.7 to 5.9 3.1 to 4.9
Maximum Energy Product
(BH) max
kJ/m2 60 to 96 28 to 60 8.8 4.0
MGOe 7.5 to 12.0 3.5 to 7.5 1.1 0.5
Temperature Coefficent Br %/K -0.1 to -0.15 -0.1 to -0.15 -0.18 to -0.19 -0.18
Temperature Coefficent iHc %/K 0.35 to 0.5 0.35
Curie Point
Tc
K * 393 * 393 * 353 * 353
°C * 120 * 120 * 80 * 80
Recoil Relative Magnetic
Permeability
μrec
1.1 to 1.2 1.1 to 1.2 1.03 to 1.07 1.03 to 1.07
Density g/cm2 5.6 to 6.2 4.2 to 5.5 3.7 3.7
Deflecting Strength Mpa 49.0 to 58.8
Kgf/mm2 5.0 to 6.0
Compression Strength MPa
Kgf/mm2
Tensile Strength MPa 30000 666 392
Kgf/mm2 3061 68 40
Specific Heat J/(Kg•K) 0.7 to 0.8x103 0.7 to 0.8x103
cal/g°C 0.167 to 0.191 0.167 to 0.191
Vickers Hardness HV 430 430 760 450
Thermal Expansion Coefficient
Lateral
ppm/K 13 to 15 50
Thermal Expansion Coefficient
Vertical
ppm/K 13 to 15 50 100 to 150 100 to 150
JIS REFe63/64p REFe63/64p
MMPA
Magnetic Field To Be Charged
For Magnetization
kA/m 2000 2000 800 800
KOe 25 25 10 10
Electric Resistance nΩm 56•103 56•103