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Magnetic properties of Sintered Neodymium Magnet (NdFeB magnet): | |||||
Grade | Remanence | Coercive Force | Intrinsic Coercive Force | Max. energy product |
Max. Operating Temperature |
Br mT (kGs) |
Hcb kA/m (kOe) |
Hcj kA/m (kOe) |
( BH )max kJ/m 3 (MGOe) |
Tw | |
N35 |
1170-1220 (11.7-12.2) |
≥ 868 ( ≥ 10.9) |
≥ 955 ( ≥ 12) |
263-287 (33-36) |
80 deg |
N38 |
1220-1250 (12.2-12.5) |
≥ 899 ( ≥ 11.3) |
≥ 955 ( ≥ 12) |
287-310 (36-39) |
80 deg |
N40 |
1250-1280 (12.5-12.8) |
≥ 907 ( ≥ 11.4) |
≥ 955 ( ≥ 12) |
302-326 (38-41) |
80 deg |
N42 |
1280-1320 (12.8-13.2) |
≥ 915 ( ≥ 11.5) |
≥ 955 ( ≥ 12) |
318-342 (40-43) |
80 deg |
N45 |
1320-1380 (13.2-13.8) |
≥ 923 ( ≥ 11.6) |
≥ 955 ( ≥ 12) |
342-366 (43-46) |
80 deg |
N48 |
1380-1420 (13.8-14.2) |
≥ 923 ( ≥ 11.6) |
≥ 876 ( ≥ 12) |
366-390 (46-49) |
80 deg |
N50 |
1400-1450 (14.0-14.5) |
≥ 796 ( ≥ 10.0) |
≥ 876 ( ≥ 11) |
382-406 (48-51) |
60 deg |
N52 |
1430-1480 (14.3-14.8) |
≥ 796 ( ≥ 10.0) |
≥ 876 ( ≥ 11) |
398-422 (50-53) |
60 deg |
30M |
1080-1130 (10.8-11.3) |
≥ 796 ( ≥ 10.0) |
≥ 1114 ( ≥ 14) |
223-247 (28-31) |
100 deg |
33M |
1130-1170 (11.3-11.7) |
≥ 836 ( ≥ 10.5) |
≥ 1114 ( ≥ 14) |
247-263 (31-33) |
100 deg |
35M |
1170-1220 (11.7-12.2) |
≥ 868 ( ≥ 10.9) |
≥ 1114 ( ≥ 14) |
263-287 (33-36) |
100 deg |
38M |
1220-1250 (12.2-12.5) |
≥ 899 ( ≥ 11.3) |
≥ 1114 ( ≥ 14) |
287-310 (36-39) |
100 deg |
40M |
1250-1280 (12.5-12.8) |
≥ 923 ( ≥ 11.6) |
≥ 1114 ( ≥ 14) |
302-326 (38-41) |
100 deg |
42M |
1280-1320 (12.8-13.2) |
≥ 955 ( ≥ 12.0) |
≥ 1114 ( ≥ 14) |
318-342 (40-43) |
100 deg |
45M |
1320-1380 (13.2-13.8) |
≥ 995 ( ≥ 12.5) |
≥ 1114 ( ≥ 14) |
342-366 (43-46) |
100 deg |
48M |
1360-1430 (13.6-14.3) |
≥ 1027 ( ≥ 12.9) |
≥ 1114 ( ≥ 14) |
366-390 (46-49) |
100 deg |
50M |
1400-1450 (14.0-14.5) |
≥ 1033 ( ≥ 13.0) |
≥ 1114 ( ≥ 14) |
382-406 (48-51) |
100 deg |
30H |
1080-1130 (10.8-11.3) |
≥ 796 ( ≥ 10.0) |
≥ 1353 ( ≥ 17) |
223-247 (28-31) |
120 deg |
33H |
1130-1170 (11.3-11.7) |
≥ 836 ( ≥ 10.5) |
≥ 1353 ( ≥ 17) |
247-271 (31-34) |
120 deg |
35H |
1170-1220 (11.7-12.2) |
≥ 868 ( ≥ 10.9) |
≥ 1353 ( ≥ 17) |
263-287 (33-36) |
120 deg |
38H |
1220-1250 (12.2-12.5) |
≥ 899 ( ≥ 11.3) |
≥ 1353 ( ≥ 17) |
287-310 (36-39) |
120 deg |
40H |
1250-1280 (12.5-12.8) |
≥ 923 ( ≥ 11.6) |
≥ 1353 ( ≥ 17) |
302-326 (38-41) |
120 deg |
42H |
1280-1320 (12.8-13.2) |
≥ 955 ( ≥ 12.0) |
≥ 1353 ( ≥ 17) |
318-342 (40-43) |
120 deg |
45H |
1300-1360 (13-13.6) |
≥ 963 ( ≥ 12.1) |
≥ 1353 ( ≥ 17) |
326-358 (43-46) |
120 deg |
48H |
1370-1430 (13.7-14.3) |
≥ 995 ( ≥ 12.5) |
≥ 1353 ( ≥ 17) |
366-390 (46-49) |
120 deg |
30SH |
1080-1130 (10.8-11.3) |
≥ 804 ( ≥ 10.1) |
≥ 1592 ( ≥ 20) |
223-247 (28-31) |
150 deg |
33SH |
1130-1170 (11.3-11.7) |
≥ 844 ( ≥ 10.6) |
≥ 1592 ( ≥ 20) |
247-271 (31-34) |
150 deg |
35SH |
1170-1220 (11.7-12.2) |
≥ 876 ( ≥ 11.0) |
≥ 1592 ( ≥ 20) |
263-287 (33-36) |
150 deg |
38SH |
1220-1250 (12.2-12.5) |
≥ 907 ( ≥ 11.4) |
≥ 1592 ( ≥ 20) |
287-310 (36-39) |
150 deg |
40SH |
1240-1280 (12.5-12.8) |
≥ 939 ( ≥ 11.8) |
≥ 1592 ( ≥ 20) |
302-326 (38-41) |
150 deg |
42SH |
1280-1320 (12.8-13.2) |
≥ 987 ( ≥ 12.4) |
≥ 1592 ( ≥ 20) |
318-342 (40-43) |
150 deg |
45SH |
1320-1380 (13.2-13.8) |
≥ 1003 ( ≥ 12.6) |
≥ 1592 ( ≥ 20) |
342-366 (43-46) |
150 deg |
28UH | 1020-1080 (10.2-10.8) |
≥ 764 ( ≥ 9.6) |
≥ 1990 ( ≥ 25) |
207-231 (26-29) |
180 deg |
30UH | 1080-1130 (10.8-11.3) |
≥ 812 ( ≥ 10.2) |
≥ 1990 ( ≥ 25) |
223-247 (28-31) |
180 deg |
33UH |
1130-1170 (11.3-11.7) |
≥ 852 ( ≥ 10.7) |
≥ 1990 ( ≥ 25) |
247-271 (31-34) |
180 deg |
35UH |
1180-1220 (11.8-12.2) |
≥ 860 ( ≥ 10.8) |
≥ 1990 ( ≥ 25) |
263-287 (33-36) |
180 deg |
38UH |
1220-1250 (12.2-12.5) |
≥ 876 ( ≥ 11.0) |
≥ 1990 ( ≥ 25) |
287-310 (36-39) |
180 deg |
40UH |
1240-1280 (12.5-12.8) |
≥ 899 ( ≥ 11.3) |
≥ 1990 ( ≥ 25) |
302-326 (38-41) |
180 deg |
28EH |
1040-1090 (10.4-10.9) |
≥ 780 ( ≥ 9.8) |
≥ 2388 ( ≥ 30) |
207-231 (26-29) |
200 deg |
30EH | 1080-1130 (10.8-11.3) |
≥ 812 ( ≥ 10.2) |
≥ 2388 ( ≥ 30) |
223-247 (28-31) |
200 deg |
33EH |
1130-1170 (11.3-11.7) |
≥ 836 ( ≥ 10.5) |
≥ 2388 ( ≥ 30) |
247-271 (31-34) |
200 deg |
35EH |
1170-1220 (11.7-12.2) |
≥ 876 ( ≥ 11.0) |
≥ 2388 ( ≥ 30) |
263-287 (33-36) |
200 deg |
38EH |
1220-1250 (12.2-12.5) |
≥ 899 ( ≥ 11.3) |
≥ 2388 ( ≥ 30) |
287-310 (36-39) |
200 deg |
30AH |
1080-1120 (10.8-11.2) |
≥ 812 ( ≥ 10.2) |
≥ 2785 ( ≥ 35) |
223-255 (28-32) |
220 deg |
33AH |
1120-1170 (11.2-11.7) |
≥ 812 ( ≥ 10.2) |
≥ 2785 ( ≥ 35) |
247-271 (31-34) |
220 deg |
Physical and Mechanical Properties of Neodymium Magnet: | |||||
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 | ||||
Available coatings for sintered Neodymium Magnet (NdFeB magnet): | |||||
Available Coatings: | |||||
Surface | Coating | Thickness (Microns) | Color | Resistance | |
Passivation | 1 | Silver Grey | Temporary Protection | ||
Nickel | Ni+Ni | 10.0-20 | Bright Silver | Excellent against Humidity | |
Ni+Cu+Ni | |||||
Zinc | Zn | 8.0-20 | Bright Blue | Good Against Salt Spray | |
C-Zn | Shinny Color | Excellent Against Salt Spray | |||
Tin | Ni+Cu+Sn | 15-20 | Silver | Superior Against Humidity | |
Gold | Ni+Cu+Au | 10.0-20 | Gold | Superior Against Humidity | |
Copper | Ni+Cu | 10.0-20 | Gold | Temporary Protection | |
Epoxy | Epoxy | 15-25 | Black, Red, Grey |
Excellent Against Humidity & Salt Spray |
|
Ni+Cu+Epoxy | |||||
Zn+Epoxy | |||||
Chemical | Ni | 10.0-20 | Silver Grey | Excellent Against Humidity | |
Parylene | Parylene | 5.0-20 | Grey |
Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria. FDA Approved. |