NdFeB
Neodymium Iron Boron Magnet Materials
Sintered NdFeB Magnets
*Download:
Catalogue of Sintered NdFeB Magnets
(960KB)
Sintered NdFeB magnets are the most powerful commercialized permanent
magnets available today, with maximum energy product ranging from
26 MGOe to 55 MGOe. Nd-Fe-B is the third generation of permanent
magnet developed in the 1980s. It has a combination of very high
remanence and coercivity, and comes with a wide range of grades,
sizes and shapes. With its excellent magnetic characteristics, abundant
raw material and relatively low prices, Nd-Fe-B offers more flexibility
in designing of new or replace the traditional magnet materials
such as ceramic, Alnico and Sm-Co to achieve high efficiency, low
cost and more compact devices.
Advantages of sintered Magnet
*Extreme strong Br Resident induction.
*Excellent demagnetization resistance capability.
*Good Price relative to its high magnetic properties.
Magnetic Properties of Sintered NdFeB Magnets
Item |
Grade |
Remanence; |
Coercivity; |
Coercivity Force; |
Max BH Product; |
Working |
Br |
HcB |
HcJ |
(BH)max |
Temp. |
KGs |
T |
KOe |
KA/m |
KOe |
KA/m |
MGOe |
KJ/m |
°C |
Max. |
Min. |
Max. |
Min. |
Max |
Min. |
Max. |
Min. |
  |
N |
N30 |
11.3 |
10.8 |
1.13 |
1.08 |
�0 |
�96 |
>=12 |
>=960 |
31 |
28 |
247 |
223 |
�0 |
N33 |
11.8 |
11.3 |
1.18 |
1.13 |
�0.5 |
�36 |
>=12 |
>=960 |
34 |
31 |
270 |
247 |
�0 |
N35 |
12.2 |
11.7 |
1.22 |
1.17 |
�0.9 |
�68 |
>=12 |
>=960 |
36 |
33 |
287 |
263 |
�0 |
N38 |
12.5 |
12.2 |
1.25 |
1.22 |
�1.3 |
�99 |
>=12 |
>=960 |
39 |
36 |
310 |
287 |
�0 |
N40 |
12.8 |
12.5 |
1.28 |
1.25 |
�1.6 |
�23 |
>=12 |
>=960 |
41 |
38 |
326 |
302 |
�0 |
N42 |
13.2 |
12.8 |
1.32 |
1.28 |
�1.6 |
�23 |
>=12 |
>=960 |
43 |
40 |
342 |
318 |
�0 |
N45 |
13.8 |
13.2 |
1.38 |
1.32 |
�1.0 |
�36 |
>=12 |
>=960 |
46 |
43 |
366 |
342 |
�0 |
N48 |
14.2 |
13.8 |
1.42 |
1.38 |
�0.5 |
�36 |
>=11 |
>=900 |
49 |
46 |
390 |
366 |
�0 |
N50 |
14.5 |
14 |
1.45 |
1.4 |
�0.8 |
�60 |
>=12 |
>=960 |
51 |
48 |
406 |
382 |
�0 |
N52 |
14.8 |
14.3 |
1.48 |
1.43 |
�0.8 |
�60 |
>=11 |
>=876 |
53 |
50 |
422 |
398 |
�0 |
N55 |
15.3 |
14.7 |
1.53 |
1.47 |
�0.8 |
�60 |
>=11 |
>=876 |
56 |
52 |
438 |
414 |
�0 |
M |
N30M |
11.3 |
10.8 |
1.13 |
1.08 |
�/font>10 |
>=796 |
>=14 |
>=1114 |
31 |
28 |
247 |
223 |
<=100 |
N35M |
12.2 |
11.7 |
1.22 |
1.17 |
�/font>10.9 |
>=868 |
>=14 |
>=1114 |
36 |
33 |
287 |
263 |
<=100 |
N38M |
12.8 |
12.3 |
1.3 |
1.23 |
�1.6 |
>=915 |
>=14 |
>=1114 |
40 |
36 |
318 |
287 |
<=100 |
N40M |
13.2 |
12.6 |
1.32 |
1.26 |
�1.8 |
>=939 |
>=14 |
>=1114 |
42 |
38 |
334 |
289 |
<=100 |
N42M |
13.5 |
12.9 |
1.35 |
1.3 |
�2.0 |
>=955 |
>=14 |
>=1114 |
44 |
40 |
350 |
318 |
<=100 |
N45M |
13.8 |
13.2 |
1.38 |
1.32 |
�2.5 |
>=994 |
>=14 |
>=1114 |
46 |
42 |
366 |
334 |
<=100 |
N48M |
14.2 |
13.7 |
1.42 |
1.37 |
�2.8 |
>=1018 |
>=14 |
>=1114 |
49 |
45 |
390 |
358 |
<=100 |
N50M |
14.5 |
14 |
1.45 |
1.4 |
�3.1 |
>=1042 |
>=11 |
>=1114 |
51 |
47 |
406 |
374 |
<=100 |
N52M |
14.8 |
14.3 |
1.48 |
1.43 |
�/font>13.1 |
>=1042 |
>=11 |
>=1114 |
52 |
50 |
414 |
398 |
<=100 |
H |
N30H |
11.3 |
10.8 |
1.13 |
1.08 |
�/font>10.2 |
>=812 |
>=17 |
>=1353 |
31 |
28 |
247 |
223 |
<=120 |
N35H |
12.5 |
11.8 |
1.25 |
1.18 |
�1.0 |
>=875 |
>=17 |
>=1353 |
37 |
33 |
295 |
263 |
<=120 |
N38H |
12.8 |
12.3 |
1.3 |
1.23 |
�1.6 |
>=915 |
>=17 |
>=1353 |
40 |
36 |
318 |
287 |
<=120 |
N41H |
13.2 |
12.6 |
1.32 |
1.26 |
�1.8 |
>=939 |
>=17 |
>=1274 |
42 |
38 |
334 |
302 |
<=120 |
N44H |
13.7 |
13 |
1.37 |
1.3 |
�2.1 |
>=963 |
>=16 |
>=1274 |
45 |
41 |
358 |
326 |
<=120 |
N46H |
13.8 |
13.2 |
1.38 |
1.32 |
�2.2 |
>=971 |
>=16 |
>=1274 |
47 |
43 |
374 |
342 |
<=120 |
N48H |
14.2 |
13.7 |
1.42 |
1.37 |
�2.7 |
>=1011 |
>=16 |
>=1274 |
49 |
45 |
390 |
358 |
<=120 |
N50H |
14.5 |
14 |
1.45 |
1.4 |
�/font>13.0 |
>=1035 |
>=16 |
>=1274 |
51 |
48 |
406 |
382 |
<=120 |
SH |
N30SH |
11.3 |
10.8 |
1.13 |
1.08 |
�/font>10.1 |
>=804 |
>=20 |
>=1592 |
31 |
28 |
247 |
223 |
<=150 |
N35SH |
12.5 |
11.8 |
1.25 |
1.18 |
�1.0 |
>=876 |
>=20 |
>=1592 |
37 |
33 |
295 |
263 |
<=150 |
N40SH |
13 |
12.3 |
1.3 |
1.23 |
�1.6 |
>=923 |
>=20 |
>=1592 |
40 |
36 |
318 |
287 |
<=150 |
N42SH |
13.2 |
12.9 |
1.32 |
1.26 |
>=11.8 |
>=939 |
>=20 |
>=1592 |
42 |
38 |
334 |
302 |
<=150 |
N44SH |
13.7 |
13 |
1.37 |
1.3 |
>=12.1 |
>=963 |
>=20 |
>=1592 |
45 |
41 |
358 |
326 |
<=150 |
N46SH |
13.8 |
13.4 |
1.38 |
1.34 |
>=12.5 |
>=965 |
>=20 |
>=1592 |
47 |
43 |
374 |
342 |
<=150 |
N48SH |
14.3 |
13.7 |
1.43 |
1.37 |
>=12.6 |
>=1003 |
>=20 |
>=1592 |
49 |
46 |
390 |
366 |
<=150 |
UH |
N28UH |
10.8 |
10.5 |
1.08 |
1.05 |
>=9.6 |
>=764 |
>=25 |
>=1990 |
30 |
26 |
239 |
207 |
<=180 |
N30UH |
11.3 |
10.8 |
1.13 |
1.08 |
>=10.5 |
>=835 |
>=25 |
>=1990 |
31 |
28 |
247 |
223 |
<=180 |
N33UH |
11.7 |
11.4 |
1.17 |
1.14 |
>=10.7 |
>=851 |
>=25 |
>=1990 |
35 |
31 |
279 |
247 |
<=180 |
N35UH |
12.2 |
11.8 |
1.22 |
1.18 |
>=11.0 |
>=875 |
>=25 |
>=1990 |
37 |
33 |
295 |
263 |
<=180 |
N38UH |
12.5 |
12.2 |
1.25 |
1.22 |
>=11.6 |
>=915 |
>=25 |
>=1990 |
39 |
36 |
310 |
287 |
<=180 |
N40UH |
12.8 |
12.4 |
1.28 |
1.24 |
>=11.4 |
>=907 |
>=25 |
>=1990 |
41 |
38 |
326 |
302 |
<=180 |
N42UH |
13.2 |
12.8 |
1.32 |
1.28 |
>=11.4 |
>=907 |
>=25 |
>=1990 |
43 |
40 |
342 |
318 |
<=180 |
N45UH |
13.5 |
13.1 |
1.35 |
1.31 |
>=12.6 |
>=1003 |
>=25 |
>=1990 |
45 |
42 |
358 |
334 |
<=180 |
EH |
N30EH |
11.3 |
10.8 |
1.17 |
1.08 |
>=10.2 |
>=812 |
>=30 |
>=2388 |
32 |
28 |
255 |
223 |
<=200 |
N33EH |
11.7 |
11.3 |
1.17 |
1.13 |
>=10.7 |
>=851 |
>=30 |
>=2388 |
35 |
31 |
279 |
2247 |
<=200 |
N35EH |
12.2 |
11.7 |
1.22 |
1.17 |
>=11.0 |
>=875 |
>=30 |
>=2388 |
37 |
33 |
295 |
263 |
<=200 |
N38EH |
12.5 |
12.2 |
1.25 |
1.22 |
>=11.5 |
>=915 |
>=30 |
>=2387 |
40 |
36 |
318 |
287 |
<=200 |
N40EH |
12.8 |
12.5 |
1.28 |
1.25 |
>=11.4 |
>=907 |
>=30 |
>=2388 |
41 |
38 |
326 |
302 |
<=200 |
N42EH |
13.1 |
12.8 |
1.31 |
1.28 |
>=11.4 |
>=907 |
>=30 |
>=2387 |
41 |
38 |
340 |
320 |
<=200 |
AH |
N28AH |
11 |
10.4 |
1.1 |
1.04 |
>=9.70 |
>=772 |
>=35 |
>=2786 |
29 |
26 |
231 |
207 |
<=220 |
N30AH |
11.7 |
10.8 |
1.17 |
1.08 |
>=10.2 |
>=812 |
>=35 |
>=2786 |
32 |
28 |
255 |
223 |
<=220 |
N33AH |
12.2 |
11.4 |
1.22 |
1.14 |
>=10.7 |
>=851 |
>=35 |
>=2786 |
35 |
31 |
279 |
247 |
<=220 |
N35AH |
12.5 |
11.7 |
1.25 |
1.17 |
>=11.0 |
>=876 |
>=35 |
>=2386 |
37 |
33 |
295 |
263 |
<=220 |
N38AH |
12.5 |
12.2 |
1.25 |
1.22 |
>=11.4 |
>=907 |
>=35 |
>=2786 |
39 |
36 |
310 |
287 |
<=220 |
1.Licensed Products by SSMC-MQ - ISO 9002 Quality Standard
Certified
2.The above-mentioned data of magnetic parameters and physical properties
are given at room temperature.
3.The maximum service temperature of magnet is changeable due to
the ratio length and diameter and environmental factors.
4. Special properties can be achieved with custom method.
Physical and Mechanical Properties
Thermal Conductivity |
7.7 kcal/m-h-°C |
Young's Modulus |
1.7 x 104 kg/mm2 |
Bending Strength |
24 kg/mm2 |
Compressive Strength |
80 kg/mm2 |
Electrical Resistivity
|
160 µ-ohm-cm/cm2 |
Density |
7.4-7.55
g/cm3 |
Vickers Hardness |
500 - 600 |
« back to top
Bonded NdFeB Magnets
*Download:
Catalogue of
Bonded NdFeB Magnets
(1775KB)
Bonded NdFeB magnets are manufactured by binding rapid-quenching
NdFeB powder. The powder is mixed with resin to form a magnet by
compression molding with epoxy or infection molding with nylon.
The latter technique is particular effective in large volume production,
though the magnetic value of products is lower than those made with
compression molding because of their relatively lower density. Various
shapes of high dimensional accuracy can be produced without further
processing. Surface is treated by epoxy coating or nickel-plating
to prevent corrosion
With different ratio of additives to NdFeB powder, magnetic properties
of hybrid NdFeB magnets can be tuned in a wide range. Once the ratio
is fixed, magnetic property fluctuation can still be limited in
a narrow bank. Hybrid magnets will meet customerˇŻs specified properties.
Rapidly quenched NdFeB powder used for bonded magnets is multi
grain with grain size of sub-micron. Powder is isotropic in magnetic
properties, which results in flat increasing of remanence and intrinsic
coercivity with applied field. Magnet can only be magnetized to
saturation in high fields.
Advantages of Bonded Magnets
*Produced with high efficiency, stability and repeatability.
*Magnet and other part may form together in one step.
*Free choice of magnetizing direction-especially for multi-polar
applications
*High dimensional accuracy-large quantity applications with minimum
post-press machining.
*Thin-wall ring and complex shape magnets.
*High resistance to corrosion.
Bonded NdFeB Magnets(Injection Molded)
Typical Magnetic Properties
Grade |
Max. Energy Product
|
Remanence |
Coercive Force
|
Rev. Temp. Coeff.
|
Working Temp. |
Density |
(BH)max
|
Br |
Hc
|
Hci
|
Bd |
Hd |
Tc |
D |
MGOe |
kJ/m3 |
T |
kOe |
kA/m |
kOe |
kA/m |
%/°C
|
%/°C
|
°C
|
g/cm3 |
BNI-2 |
0.8-3.0 |
6.4-24 |
0.2-0.4 |
1.5-3.0 |
120-240 |
7.0-9.0 |
560-720 |
-0.15 |
-0.40 |
130 |
3.5-4.0 |
BNI-4 |
3.5-4.5 |
28-36 |
0.4-0.49 |
3.1-3.9 |
247-310 |
7.2-9.2 |
573-732 |
-0.10 |
-0.40 |
180 |
4.0-5.0 |
BNI-6 |
5.2-7.0 |
42-56 |
0.49-0.57 |
3.9-4.8 |
312-382 |
8.0-10.0 |
637-796 |
-0.10 |
-0.40 |
150 |
5.0-5.5 |
BNI-8 |
7.4-8.4 |
59-67 |
0.57-0.63 |
4.8-5.4 |
382-430 |
8.5-10.5 |
676-835 |
-0.10 |
-0.40 |
150 |
5.0-5.5 |
BNI-6H |
5.0-6.5 |
40-52 |
0.48-0.56 |
4.2-5.0 |
334-398 |
13.0-17.0 |
1035-1353 |
-0.15 |
-0.4 |
180 |
5.0-5.5 |
Bonded NdFeB Magnets(Compression Bonded)
Typical Magnetic Properties
Grade |
Max. Energy Product
|
Remanence |
Coercive Force
|
Rev. Temp.
Coeff. |
Working Temp. |
Density |
(BH)max
|
Br |
Hc
|
Hci
|
Bd |
Hd |
Tw |
D |
MGOe |
kJ/m3 |
T |
kOe |
kA/m |
kOe |
kA/m |
%/°C
|
%/°C
|
°C
|
g/cm3 |
BNP-6 |
5.0-7.0 |
40-56 |
0.52-0.60 |
3.8-4.5 |
304-360 |
8.0-10 |
640-800 |
-0.10 |
-0.40 |
140 |
5.3-5.8 |
BNP-8 |
7.0-9.0 |
56-72 |
0.60-0.65 |
4.5-5.5 |
360-440 |
8.0-12 |
640-960 |
-0.10 |
-0.40 |
140 |
5.6-6.0 |
BNP-10 |
9.0-10.0 |
72-80 |
0.65-0.70 |
4.5-5.8 |
360-464 |
8.0-12 |
640-960 |
-0.10 |
-0.40 |
120 |
5.8-6.1 |
BNP-12 |
10.0-12.0 |
80-96 |
0.70-0.76 |
5.8-6.0 |
424-480 |
8.0-11 |
640-880 |
-0.10 |
-0.40 |
130 |
6.0-6.2 |
BNP-8H |
6.0-9.0 |
48-72 |
0.55-0.62 |
5.0-6.0 |
400-480 |
12-16 |
960-1280 |
-0.07 |
-0.40 |
120 |
5.6-6.0 |
« back to top |