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General Introduction
Sintered Magnet: is one of the high performance rare earth permanent magnets, which use neodymium (Nd), iron (Fe), and boron (B) as their main ingredients and is susceptible to demagnetization when exposed to elevated temperatures. There are many grades which can withstand high temperatures, but several factors will dictate the performance of the Neodymium magnet. There are Sintered NdFeB, Sintered AlNiCo, Sintered SmCo and Sintered Ferrite.
NdFeB magnets, have the characteristics of :
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Super strong Br Resident induction.Excellent demagnetization resistance capability.
Good Price relative to its high magnetic properties.
Coating is needed for NdFeB
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Surface Treatment Method: Type Information
Metallic Zinc, Nickel, Nickel+Nickel, Copper+Nickel, Nickel+Copper+Nickel,
Gold, Organic Epoxy, Nickel+Epoxy coating
Temporary Surface: Passivation
Dimension Available
Sintered NdFeB Magnets production process >>
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| What shapes can it be formed |
NdFeB magnet, Sintered NdFeB magnet |
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| NdFeB magnets for motor, generator,driver in various specification |
Tile-shaped and special-shaped ndfeb magnet |
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| NdFeB Blocks in various specification |
NdFeB products painted with epoxy resin |
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| NdFeB Rings in various specification |
NdFeB Cylinders in various specification |
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| Special Shape of NdFeB Magnet |
Rubber Coated NdFeB Magnet |
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| Special Shape of NdFeB Magnet |
Magnetic Amazing Sphere |
Magnetic properties of Sintered 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/m3
(MGOe)
|
Tw |
N35 |
1170-1220
(11.7-12.2) |
868
( 10.9) |
955
( 12) |
263-287
(33-36) |
80 |
N38 |
1220-1250
(12.2-12.5) |
899
( 11.3) |
955
( 12) |
287-310
(36-39) |
80 |
N40 |
1250-1280
(12.5-12.8) |
907
( 11.4) |
955
( 12) |
302-326
(38-41) |
80 |
N42 |
1280-1320
(12.8-13.2) |
915
( 11.5) |
955
( 12) |
318-342
(40-43) |
80 |
N45 |
1320-1380
(13.2-13.8) |
923
( 11.6) |
955
( 12) |
342-366
(43-46) |
80 |
N48 |
1380-1420
(13.8-14.2) |
923
( 11.6) |
876
( 12) |
366-390
(46-49) |
80 |
N50 |
1400-1450
(14.0-14.5) |
796
( 10.0) |
876
( 11) |
382-406
(48-51) |
60 |
N52 |
1430-1480
(14.3-14.8) |
796
( 10.0) |
876
( 11) |
398-422
(50-53) |
60 |
30M |
1080-1130
(10.8-11.3) |
796
( 10.0) |
1114
( 14) |
223-247
(28-31) |
100 |
33M |
1130-1170
(11.3-11.7) |
836
( 10.5) |
1114
( 14) |
247-263
(31-33) |
100 |
35M |
1170-1220
(11.7-12.2) |
868
( 10.9) |
1114
( 14) |
263-287
(33-36) |
100 |
38M |
1220-1250
(12.2-12.5) |
899
( 11.3) |
1114
( 14) |
287-310
(36-39) |
100 |
40M |
1250-1280
(12.5-12.8) |
923
( 11.6) |
1114
( 14) |
302-326
(38-41) |
100 |
42M |
1280-1320
(12.8-13.2) |
955
( 12.0) |
1114
( 14) |
318-342
(40-43) |
100 |
45M |
1320-1380
(13.2-13.8) |
995
( 12.5) |
1114
( 14) |
342-366
(43-46) |
100 |
48M |
1360-1430
(13.6-14.3) |
1027
( 12.9) |
1114
( 14) |
366-390
(46-49) |
100 |
50M |
1400-1450
(14.0-14.5) |
1033
( 13.0) |
1114
( 14) |
382-406
(48-51) |
100 |
30H |
1080-1130
(10.8-11.3) |
796
( 10.0) |
1353
( 17) |
223-247
(28-31) |
120 |
33H |
1130-1170
(11.3-11.7) |
836
( 10.5) |
1353
( 17) |
247-271
(31-34) |
120 |
35H |
1170-1220
(11.7-12.2) |
868
( 10.9) |
1353
( 17) |
263-287
(33-36) |
120 |
38H |
1220-1250
(12.2-12.5) |
899
( 11.3) |
1353
( 17) |
287-310
(36-39) |
120 |
40H |
1250-1280
(12.5-12.8) |
923
( 11.6) |
1353
( 17) |
302-326
(38-41) |
120 |
42H |
1280-1320
(12.8-13.2) |
955
( 12.0) |
1353
( 17) |
318-342
(40-43) |
120 |
45H |
1300-1360
(13-13.6) |
963
( 12.1) |
1353
( 17) |
326-358
(43-46) |
120 |
48H |
1370-1430
(13.7-14.3) |
995
( 12.5) |
1353
( 17) |
366-390
(46-49) |
120 |
30SH |
1080-1130
(10.8-11.3) |
804
( 10.1) |
1592
( 20) |
223-247
(28-31) |
150 |
33SH |
1130-1170
(11.3-11.7) |
844
( 10.6) |
1592
( 20) |
247-271
(31-34) |
150 |
35SH |
1170-1220
(11.7-12.2) |
876
( 11.0) |
1592
( 20) |
263-287
(33-36) |
150 |
38SH |
1220-1250
(12.2-12.5) |
907
( 11.4) |
1592
( 20) |
287-310
(36-39) |
150 |
40SH |
1240-1280
(12.5-12.8) |
939
( 11.8) |
1592
( 20) |
302-326
(38-41) |
150 |
42SH |
1280-1320
(12.8-13.2) |
987
( 12.4) |
1592
( 20) |
318-342
(40-43) |
150 |
| 45SH |
1320-1380
(13.2-13.8) |
1003
( 12.6) |
1592
( 20) |
342-366
(43-46) |
150 |
28UH |
1020-1080 (10.2-10.8) |
764
( 9.6) |
1990
( 25) |
207-231
(26-29) |
180 |
30UH |
1080-1130 (10.8-11.3) |
812
( 10.2) |
1990
( 25) |
223-247
(28-31) |
180 |
33UH |
1130-1170
(11.3-11.7) |
852
( 10.7) |
1990
( 25) |
247-271
(31-34) |
180 |
35UH |
1180-1220
(11.8-12.2) |
860
( 10.8) |
1990
( 25) |
263-287
(33-36) |
180 |
38UH |
1220-1250
(12.2-12.5) |
876
( 11.0) |
1990
( 25) |
287-310
(36-39) |
180 |
40UH |
1240-1280
(12.5-12.8) |
899
( 11.3) |
1990
( 25) |
302-326
(38-41) |
180 |
28EH |
1040-1090
(10.4-10.9) |
780
( 9.8) |
2388
( 30) |
207-231
(26-29) |
200 |
30EH |
1080-1130 (10.8-11.3) |
812
( 10.2) |
2388
( 30) |
223-247
(28-31) |
200 |
33EH |
1130-1170
(11.3-11.7) |
836
( 10.5) |
2388
( 30) |
247-271
(31-34) |
200 |
35EH |
1170-1220
(11.7-12.2) |
876
( 11.0) |
2388
( 30) |
263-287
(33-36) |
200 |
38EH |
1220-1250
(12.2-12.5) |
899
( 11.3) |
2388
( 30) |
287-310
(36-39) |
200 |
30AH |
1080-1120
(10.8-11.2) |
812
( 10.2) |
2785
( 35) |
223-255
(28-32) |
220 |
33AH |
1120-1170
(11.2-11.7) |
812
( 10.2) |
2785
( 35) |
247-271
(31-34) |
220 |
|
Physical and Mechanical Properties of ndfeb: |
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 �-ohm-cm/cm2 |
Density |
7.4-7.55 g/cm3 |
Vickers Hardness |
500 - 600 |
|
|
Available coatings for sintered ndfeb magnet: |
Available Coatings: |
Surface |
Coating |
Thickness (Microns) |
Color |
Resistance |
Passivation |
|
1 |
Silver Grey |
Temporary Protection |
Nickel |
Ni+Ni |
10-20 |
Bright Silver |
Excellent against Humidity |
Ni+Cu+Ni |
Zinc |
Zn |
8-20 |
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 |
10-20 |
Gold |
Superior Against Humidity |
Copper |
Ni+Cu |
10-20 |
Gold |
Temporary Protection |
Epoxy |
Epoxy |
15-25 |
Black, Red, Grey |
Excellent Against Humidity
& Salt Spray |
Ni+Cu+Epoxy |
Zn+Epoxy |
Chemical |
Ni |
10-20 |
Silver Grey |
|
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