1. This is
sintered Neodymium magnet, it is the third generation
rare earth permanent magnet.
It is the most powerful and strongest magnet in World at present.
2. The
disc shape magnet is one regular and popular shape for the
sintered neodymium magnet.
3. Our
neodymium disc magnet is mainly used in holding equipments. Some small
disc magnets with lower energy are also used in auto speakers.
4. In the package industry, the bags, the
magnetic jewelry, magnetic toy still have very large requirement for the
disc magnet.
|
Magnetic Characteristics And Physical Properties of Sintered NdFeB |
Properties | Remanence | Coercive Force | Intrinsic Coercive Force | Max Energy Product | Max Working Temp |
| Br | Hcb | Hcj | (BH)max | Tw |
Grade | mT(KGs) | KA/m (KGs) | KA/m (KOe) | KJ/m 3 ( MGOe ) | ℃ |
N-30 | 1080-1130 | ≥ 796 | ≥ 955 | 223-247 | ≤ 80 |
(10.8-11.3) | ( ≥ 10) | ( ≥ 12) | (28-31) |
N-33 | 1130-1180 | ≥ 836 | ≥ 955 | 247-270 | ≤ 80 |
(11.3-11.8) | ( ≥ 10.5) | ( ≥ 12) | (31-34) |
N-35 | 1170-1220 | ≥ 868 | ≥ 955 | 263-287 | ≤ 80 |
(11.7-12.2) | ( ≥ 10.9) | ( ≥ 12) | (33-36) |
N-38 | 1220-1250 | ≥ 899 | ≥ 955 | 287-310 | ≤ 80 |
(12.2-12.5) | ( ≥ 11.3) | ( ≥ 12) | (36-39) |
N-40 | 1250-1280 | ≥ 923 | ≥ 955 | 302-326 | ≤ 80 |
(12.5-12.8) | ( ≥ 11.6) | ( ≥ 12) | (38-41) |
N-42 | 1280-1320 | ≥ 923 | ≥ 955 | 318-342 | ≤ 80 |
(12.8-13.2) | ( ≥ 11.6) | ( ≥ 12) | (40-43) |
N-45 | 1320-1380 | ≥ 876 | ≥ 955 | 342-366 | ≤ 80 |
(13.2-13.8) | ( ≥ 11.0) | ( ≥ 12) | (43-46) |
N-48 | 1380-1420 | ≥ 836 | ≥ 876 | 366-390 | ≤ 80 |
(13.8-14.2) | ( ≥ 10.5) | ( ≥ 11) | (46-49) |
N-50 | 1400-1450 | ≥ 860 | ≥ 876 | 382-406 | ≤ 80 |
(14.0-14.5) | ( ≥ 10.8) | ( ≥ 11) | (48-51) |
30M | 1080-1130 | ≥ 796 | ≥ 1114 | 223-247 | ≤ 100 |
(10.8-11.3) | ( ≥ 10) | ( ≥ 14) | (28-31) |
33M | 1130-1180 | ≥ 836 | ≥ 1114 | 247-270 | ≤ 100 |
(11.3-11.8) | ( ≥ 10.5) | ( ≥ 14) | (31-34) |
35M | 1170-1220 | ≥ 868 | ≥ 1114 | 263-287 | ≤ 100 |
(11.7-12.2) | ( ≥ 10.9) | ( ≥ 14) | (33-36) |
38M | 1220-1250 | ≥ 899 | ≥ 1114 | 287-310 | ≤ 100 |
(12.2-12.5) | ( ≥ 11.3) | ( ≥ 14) | (36-39) |
40M | 1250-1280 | ≥ 923 | ≥ 1114 | 302-326 | ≤ 100 |
(12.5-12.8) | ( ≥ 11.6) | ( ≥ 14) | (38-41) |
42M | 1280-1320 | ≥ 955 | ≥ 1114 | 318-342 | ≤ 100 |
12.8-13.2 | ( ≥ 12.0) | ( ≥ 14) | (40-43) |
45M | 1320-1380 | ≥ 995 | ≥ 1114 | 342-366 | ≤ 100 |
(13.2-13.8) | ( ≥ 12.5) | ( ≥ 14) | (43-46) |
48M | 1360-1430 | ≥ 1027 | ≥ 1114 | 366-390 | ≤ 100 |
(13.6-14.3) | ( ≥ 12.9) | ( ≥ 14) | (46-49) |
50M | 1400-1450 | ≥ 1033 | ≥ 1114 | 382-406 | ≤ 100 |
(14.0-14.5) | ( ≥ 13.0) | ( ≥ 14) | (48-51) |
30H | 1080-1130 | ≥ 796 | ≥ 1353 | 223-247 | ≤ 120 |
(10.8-11.3) | ( ≥ 10) | ( ≥ 17) | (28-31) |
33H | 1130-1180 | ≥ 836 | ≥ 1353 | 247-271 | ≤ 120 |
(11.3-11.8) | ( ≥ 10.5) | ( ≥ 17) | (31-34) |
35H | 1170-1220 | ≥ 868 | ≥ 1353 | 263-287 | ≤ 120 |
(11.7-12.2) | ( ≥ 10.9) | ( ≥ 17) | (33-36) |
38H | 1220-1250 | ≥ 899 | ≥ 1353 | 287-310 | ≤ 120 |
(12.2-12.5) | ( ≥ 11.3) | ( ≥ 17) | (36-39) |
40H | 1250-1280 | ≥ 923 | ≥ 1353 | 302-326 | ≤ 120 |
(12.5-12.8) | ( ≥ 11.6) | ( ≥ 17) | (38-41) |
42H | 1280-1320 | ≥ 955 | ≥ 1353 | 318-342 | ≤ 120 |
(12.8-13.2) | ( ≥ 12.0) | ( ≥ 17) | (40-43) |
45H | 1320-1380 | ≥ 963 | ≥ 1353 | 342-366 | ≤ 120 |
(13.2-13.8) | ( ≥ 12.1) | ( ≥ 17) | (43-46) |
48H | 1370-1430 | ≥ 995 | ≥ 1274 | 366-390 | ≤ 120 |
(13.7-14.3) | ( ≥ 12.5) | ( ≥ 16) | (46-49) |
30SH | 1080-1130 | ≥ 804 | ≥ 1592 | 223-247 | ≤ 150 |
(10.8-11.3) | ( ≥ 10.1) | ( ≥ 20) | (28-31) |
33SH | 1130-1170 | ≥ 844 | ≥ 1592 | 247-271 | ≤ 150 |
(11.3-11.7) | ≥ 10.6 | ( ≥ 20) | (31-34) |
35SH | 1170-1220 | ≥ 876 | ≥ 1592 | 263-287 | ≤ 150 |
(11.7-12.2) | ( ≥ 11.0) | ( ≥ 20) | (33-36) |
38SH | 1220-1250 | ≥ 907 | ≥ 1592 | 287-310 | ≤ 150 |
(12.2-12.5) | ( ≥ 11.4) | ( ≥ 20) | (36-39) |
40SH | 1250-1280 | ≥ 939 | ≥ 1592 | 302-326 | ≤ 150 |
(12.5-12.8) | ( ≥ 11.8) | ( ≥ 20) | (38-41) |
42SH | 1280-1320 | ≥ 995 | ≥ 1592 | 318-342 | ≤ 150 |
(12.8-13.2) | ( ≥ 12.5) | ( ≥ 20) | (40-43) |
45SH | 1320-1380 | ≥ 1003 | ≥ 1592 | 342-366 | ≤ 150 |
(13.2-13.8) | ( ≥ 12.6) | ( ≥ 20) | (43-46) |
28UH | 1020-1080 | ≥ 764 | ≥ 1990 | 207-231 | ≤ 180 |
(10.2-10.8) | ( ≥ 9.6) | ( ≥ 25) | (26-29) |
30UH | 1080-1130 | ≥ 812 | ≥ 1990 | 223-247 | ≤ 180 |
(10.8-11.3) | ( ≥ 10.2) | ( ≥ 25) | (28-31) |
33UH | 1130-1170 | ≥ 852 | ≥ 1990 | 247-271 | ≤ 180 |
(11.3-11.7) | ( ≥ 10.7) | ( ≥ 25) | (31-34) |
35UH | 1180-1220 | ≥ 860 | ≥ 1990 | 263-287 | ≤ 180 |
(11.8-12.2) | ( ≥ 10.8) | ( ≥ 25) | (33-36) |
38UH | 1220-1250 | ≥ 907 | ≥ 1990 | 287-310 | ≤ 180 |
(12.2-12.5) | ( ≥ 11.4) | ( ≥ 25) | (36-39) |
30EH | 1080-1130 | ≥ 812 | ≥ 2388 | 223-247 | ≤ 200 |
(10.8-11.3) | ( ≥ 10.2) | ( ≥ 30) | (28-31) |
33EH | 1130-1170 | ≥ 812 | ≥ 2388 | 247-271 | ≤ 200 |
(11.3-11.7) | ( ≥ 10.2) | ( ≥ 30) | (31-34) |
35EH | 1170-1220 | ≥ 876 | ≥ 2388 | 263-287 | ≤ 200 |
(11.7-12.2) | ( ≥ 11.0) | ( ≥ 30) | (33-36) |
30AH | 1080-1130 | ≥ 812 | ≥ 2785 | 223-247 | ≤ 240 |
(10.8-11.3) | ( ≥ 10.2) | ( ≥ 35) | (28-31) |
33AH | 1130-1170 | ≥ 812 | ≥ 2785 | 247-271 | ≤ 240 |
(11.3-11.7) | ( ≥ 10.2) | ( ≥ 35) | 31-34 |
| | | | | |
NOTES: |
The above-mentioned data of magnetic parameters and physical properties ars given at room temperature. |
The maximum service temperature of magnet is changeable due to the ratio length and diameter and |
Environmental factors. |
Density: 7.4~7.6g/cm 3 ; α Br:-0.09~0.13%/ ℃, β Hcj: -0.50~0.80%/ ℃; Hv:600. |
The demagnetized curve of
sintered NdFeB magnet