1. This is sintered NdFeB magnet, it is the most powerful and strongest magnet in World at present.
2. The ring magnet is one regular and popular shape of the sintered NdFeB magent.
3. it can be used in many different fields.
And it is mainly used in loudspeaker. The fast development in loudspeakers, earthphone or other audio equipment require very high energy neo magnet which has stable performance at high temperature. Our SH grade ring magnets are proved to be the one of best choices.
4. As for high bonding power requirements for the
magnets in assemblying to loudspeaker parts, surface tension of the coating is critical for
magnet choice. Our trivalent chrome Zinc coating on
neo magnets provide high surface tension and it is surely of environmental protection.
|
| 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 neodymium magnet
.jpg)
.jpg)
.jpg)
