| |
|
|
| |
Neodymium Iron Boron (NdFeB) is the most powerful rare earth magnet available today. It possesses high-energy maximum over 50MGOe and wonderful coercive force. It has the best price relative to its high magnetic performance.
NdFeB magnet is widely used in many fields such as aviation, spaceflight, instruments, meters, motors, speakers, electronics, medicine and machines, etc.
|
Magnetic Characteristics and Physical Properties of Sintered NdFeB |
| Grade |
Remanence |
Coercive Force |
Intrinsic Coercive force |
Max Energy Product |
Highest Work temperature |
| Br |
Hcb |
Hci |
(BH) max |
| T |
KGs |
KOe |
KA/m |
KOe |
KA/m |
MGOe |
KJ/m |
℃ |
| N35 |
1.16-1.22 |
11.6-12.2 |
11.0 |
876 |
12.0 |
955 |
33-36 |
263-287 |
80 |
| N38 |
1.22-1.27 |
12.2-12.7 |
11.0 |
876 |
12.0 |
955 |
36-39 |
287-310 |
80 |
| N40 |
1.25-1.31 |
12.5-1.31 |
11.0 |
876 |
12.0 |
955 |
38-41 |
303-326 |
80 |
| N42 |
1.28-1.34 |
12.8-13.4 |
11.0 |
876 |
12.0 |
955 |
40-43 |
318-342 |
80 |
| N45 |
1.32-1.38 |
13.2-13.8 |
11.0 |
876 |
12.0 |
955 |
43-46 |
342-366 |
80 |
| N48 |
1.37-14.3 |
13.7-14.3 |
10.5 |
836 |
11.5 |
915 |
46-49 |
366-390 |
80 |
| N50 |
1.40-1.46 |
14.0-14.6 |
10.5 |
836 |
11.5 |
915 |
48-51 |
382-406 |
80 |
| N52 |
1.43-1.49 |
14.3-14.9 |
10.5 |
836 |
11.5 |
915 |
50-53 |
398-422 |
80 |
| N30M |
1.08-1.14 |
10.8-11.4 |
9.8 |
780 |
14.0 |
1114 |
28-31 |
223-247 |
100 |
| N33M |
1.14-1.18 |
11.4-11.8 |
10.3 |
820 |
14.0 |
1114 |
31-33 |
247-263 |
100 |
| N35M |
1.6-1.22 |
11.6-12.2 |
10.6 |
845 |
14.0 |
1114 |
33-36 |
263-287 |
100 |
| N38M |
1.23-1.27 |
12.3-12.7 |
11.0 |
876 |
14.0 |
1114 |
38-41 |
303-326 |
100 |
| N40M |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
14.0 |
1114 |
38-41 |
303-326 |
100 |
| N42M |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
14.0 |
1114 |
40-43 |
318-342 |
100 |
| N45M |
1.32-1.38 |
13.2-13.8 |
12.2 |
976 |
14.0 |
1114 |
43-46 |
342-366 |
100 |
| N48M |
1.37-1.43 |
13.7-14.3 |
12.7 |
1012 |
13.5 |
1075 |
46-49 |
366-390 |
100 |
| N50M |
1.40-1.46 |
14.0-14.6 |
13.0 |
1035 |
13.5 |
1075 |
48-51 |
382-406 |
100 |
| N35H |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
17.0 |
1353 |
33-36 |
263-287 |
120 |
| N38H |
1.21-1.27 |
12.1-12.7 |
11.1 |
886 |
17.0 |
1353 |
36-39 |
287-310 |
120 |
| N40H |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
17.0 |
1353 |
38-41 |
303-326 |
120 |
| N42H |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
16.5 |
1313 |
40-43 |
318-342 |
120 |
| N45H |
1.32-1.38 |
13.2-13.8 |
12.2 |
976 |
16.0 |
1274 |
43-46 |
342-366 |
120 |
| N30SH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
20.0 |
1592 |
28-31 |
223-247 |
150 |
| N33SH |
1.22-1.19 |
1.14-1.18 |
10.2 |
816 |
20.0 |
1592 |
31-34 |
247-271 |
150 |
| N35SH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
20.0 |
1592 |
33-36 |
263-287 |
150 |
| N38SH |
1.21-12.7 |
12.1-12.7 |
11.1 |
886 |
20.0 |
1592 |
36-39 |
278-310 |
150 |
| N40SH |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
20.0 |
1592 |
38-41 |
302-326 |
150 |
| N42SH |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
20.0 |
1592 |
40-43 |
318-342 |
150 |
| N30UH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
25.0 |
1990 |
28-31 |
223-247 |
180 |
| N33UH |
1.12-1.19 |
11.2-11.9 |
10.2 |
816 |
25.0 |
1991 |
31-34 |
247-271 |
180 |
| N35UH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
24.0 |
1910 |
33-36 |
263-287 |
180 |
| N38UH |
1.21-1.27 |
12.1-12.7 |
11.1 |
886 |
24.0 |
1910 |
36-39 |
287-310 |
180 |
| N30EH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
30.0 |
2388 |
28-31 |
223-247 |
200 |
| N33EH |
1.12-1.19 |
11.2-11.9 |
10.2 |
816 |
30.0 |
2388 |
31-34 |
247-271 |
200 |
| N35EH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
30.0 |
2388 |
33-36 |
263-287 |
200 |
|
| Physical Properties of Sintered NdFeB Material |
| Properties |
Unit |
Parameter |
| Curie Point (居里温度） |
℃ |
310-340 |
| Br 可逆温度系数 |
%℃ |
-0.1~-0.126 |
| Reversible temperature coefficient of Br |
|
| Hcj 可逆温度系数 |
%℃ |
-0.5~ -0.65 |
| Reversible temperature coefficient of Hcj |
|
| Density(密度） |
g/cm3 |
≥7.3 |
| Vickers Hardness (维氏硬度） |
|
600 |
| Bending strength(抗弯强度） |
Mpa |
250 |
| Tensilestrength(抗拉强度） |
Mpa |
80 |
| Compressive strength (抗压强度) |
Mpa |
1050 |
| Specific resistance(电阻率） |
μΩcm |
150 |
| Thermal conductivity (热传导率） |
W/(m.℃) |
9 |
|
| |
|
|
|
|
|
| Remark: |
|
|
|
|
|
|
|
|
|
|
The above mentioned data is given at room temperature. |
|
|
The Max. operating temperature will vary with L/D (Length to Diameter ratio), coating and environmental factors. |
|
Density: 7.3—7.6G/cm3 |
|
|
The typical value of other relative magnetic performance: |
|
|
α(Br)=－0.12%/℃ range from 20℃ to 120℃. |
|
|
α(Hcj)=－0.6%/℃ range from 20℃ to 120℃. |
|
|
Tc=312℃ |
|
|
|
TYPICAL MAGNETIC PERFORMANCE OF BONDED NDFEB MAGNETS
| Grade |
Br |
Hcb |
Hcj |
(BH)max |
α(Br) |
Tc |
Tw |
Density |
| mT |
kGs |
KA/m |
kOe |
KA/m |
kOe |
KJ/m3 |
MGOe |
%/℃ |
℃ |
℃ |
G/cm3 |
| BN-4 |
400-490 |
4.0-4.9 |
256-336 |
3.2-4.2 |
640-800 |
8-10 |
24-40 |
3-5 |
-0.13 |
360 |
120 |
5.5—6.5 |
| BN-5 |
420-540 |
4.2-5.4 |
275-368 |
3.4-4.6 |
640-800 |
8-10 |
32-48 |
4-6 |
-0.13 |
360 |
120 |
| BN-7 |
520-620 |
5.2-6.2 |
336-416 |
4.2-5.2 |
640-800 |
8-10 |
48-64 |
6-8 |
-0.13 |
360 |
120 |
| BN-9 |
620-700 |
6.2-7.0 |
400-456 |
5.0-5.7 |
640-800 |
8-10 |
64-80 |
8-10 |
-0.13 |
360 |
120 |
| BN-10 |
670-740 |
6.7-7.4 |
424-472 |
5.3-5.9 |
520-640 |
6.5-8.0 |
72-88 |
9-11 |
-0.13 |
360 |
120 |
| BN-11 |
680-750 |
6.8-7.5 |
472-512 |
5.9-6.4 |
720-840 |
9-10.5 |
80-96 |
10-12 |
-0.13 |
360 |
120 |
| BN-5H |
420-520 |
4.2-5.2 |
280-376 |
3.5-4.7 |
1120-1360 |
14-17 |
32-48 |
4-6 |
-0.13 |
360 |
120 |
| BN-7H |
520-600 |
5.2-6.0 |
368-432 |
4.6-5.4 |
1120-1360 |
14-17 |
48-64 |
6-8 |
-0.13 |
360 |
120 |
| BN-9H |
600-660 |
6.0-6.6 |
432-488 |
5.4-6.1 |
1120-1360 |
14-17 |
64-80 |
8-10 |
-0.13 |
360 |
120 |
|
