Material properties of radially oriented, anisotropic Nd-Fe-B ring magnets (NEOQUENCH-DR)
Magnetic properties
|
ND-31HR |
ND-31SHR |
ND-35HR |
Remanence, Br |
(T) |
1.14 ~ 1.22
|
1.08 ~ 1.18
|
1.22 ~ 1.28
|
(kG) |
(11.4 ~ 12.2) |
(10.8 ~ 11.8) |
(12.2 ~ 12.8) |
Coercivity,HCB |
(kA/m) |
830 ~ 890
|
810 ~ 880
|
870 ~ 940
|
(kOe) |
(10.4 ~ 11.2) |
(10.2 ~ 11.1) |
(10.9 ~ 11.8) |
Coercivity,HCJ |
(kA/m) |
1110 ~ 1430
|
1590 ~ 1990
|
1110 ~ 1430
|
(kOe) |
(14.0 ~ 18.0) |
(20.0 ~ 25.0) |
(14.0 ~ 18.0) |
Maximum energy product, (BH)max |
(kJ/m3) |
240 ~ 270
|
230 ~ 260
|
270 ~ 300
|
(MGOe) |
(30.0 ~ 34.0) |
(29.0 ~ 33.0) |
(34.0 ~ 38.0) |
Recoil permeability |
1.05 |
1.05 |
1.05 |
Required magnetizing magnetic field |
(kA/m) |
≧1990
|
≧2390
|
≧1990
|
(kOe) |
(≧25) |
(≧30) |
(≧25) |
density |
(Mg/m3) |
7.6 |
7.7 |
7.6 |
(g/cm3) |
|
ND-35SHR |
ND-39R |
ND-39HR |
ND-43R |
Remanence, Br |
(T) |
1.22 ~ 1.28
|
1.28 ~ 1.32
|
1.28~1.32 |
1.30 ~ 1.36
|
(kG) |
(12.2 ~ 12.8) |
(12.8 ~ 13.2) |
(12.8~13.2) |
(13.0 ~ 13.6) |
Coercivity,HCB |
(kA/m) |
880 ~ 950
|
880 ~ 960
|
928~960 |
840 ~ 960
|
(kOe) |
(11.1 ~ 11.9) |
(11.1 ~ 12.1) |
(11.6~12.1) |
(10.5 ~ 12.1) |
Coercivity,HCJ |
(kA/m) |
1430 ~ 1800
|
1040 ~ 1280
|
1110~1430 |
900 ~ 1160
|
(kOe) |
(18.0 ~ 22.6) |
(13.0 ~ 16.0) |
(14.0~18.0) |
(11.3 ~ 14.6) |
Maximum energy product, (BH)max |
(kJ/m3) |
270 ~ 300
|
300 ~ 330
|
300~330 |
320 ~ 360
|
(MGOe) |
(34.0 ~ 38.0) |
(38.0 ~ 42.0) |
(38.0~42.0) |
(40.0 ~ 45.0) |
Recoil permeability |
1.05 |
1.05 |
1.05 |
1.05 |
Required magnetizing magnetic field |
(kA/m) |
≧1990
|
≧1990
|
≧1990 |
≧1990
|
(kOe) |
(≧30) |
(≧25) |
(25) |
(≧25) |
density |
(Mg/m3) |
7.6 |
7.6 |
7.6 |
7.6 |
(g/cm3) |
The above properties are not guaranteed for magnets with thick walls. Please consult with us for details.
Other properties
Temperature coefficient of Br, alpha |
%/℃ |
-0.10 |
Temperature Coefficient of HCJ, beta |
%/℃ |
-0.50 |
Curie temperature |
℃ |
360 |
Specific heat |
J/kg℃ |
550 |
Thermal conductivity |
W/m℃ |
4.80 |
Thermal expansion coefficient (20 ~ 200℃) |
×10-6/℃ |
1 ~ 2(Radial direction) |
-1 ~ 0(Axial direction) |
Electric resistivity |
×10-8Ωm |
135 |
Ring crushing strength |
MPa |
150 |
Young's modulus |
MPa |
152000 |
Bending strength |
MPa |
200 |
Vickers hardness |
Hv |
750 |
Product dimemsions