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| NdFeB magnets |
| HOME >> Products >> NdFeB magnets |
China Ningbo Tongchuang Strong Magnet Material CO.LTD. is a high-tech company specializing in NdFeB magnet and magnetic materials, ndfeb magnet, neodymium magnet, neodymium magnetic manufacturer, researching, developing and applications. We also are manufacturing and marketing other custom ndfeb magnets, neodymium magnets, neodymium magnetics permanent magnets, neodymium rare earth magnet, neodymium permanent magnet, neodymium ring magnet, neodymium iron boron magnet, neodymium disc magnet, such as Sm-Co, Al-Ni-Co, hard ferrites and rubber magnets. ISO 9000 QC systems is through our all production processes, with the assistance of advanced testing and inspection equipments and techniques. We also take RoHS requirement as the guideline in material selection. Tongchuan magnets have been used widely in small motors, instruments, electronic devices, auto parts, MRIs, Speakers and a great variety of other applications. |
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Magnetic properties of Sintered NdFeB magnets: |
Grade |
Remanence |
Coercive Force |
Intrinsic Coercive Force |
Max. energy product |
Max. |
Operating |
Temperature |
Br |
Hcb |
Hcj |
（ BH ）
max |
Tw |
mT |
kA/m |
kA/m |
kJ/m3 |
(kGs) |
(kOe) |
(kOe) |
(MGOe) |
N35 |
1170-1220 |
≥ 868 |
≥ 955 |
263-287 |
80 ℃ |
(11.7-12.2) |
( ≥ 10.9) |
( ≥ 12) |
(33-36) |
N38 |
1220-1250 |
≥ 899 |
≥ 955 |
287-310 |
80 ℃ |
(12.2-12.5) |
( ≥ 11.3) |
( ≥ 12) |
(36-39) |
N40 |
1250-1280 |
≥ 907 |
≥ 955 |
302-326 |
80 ℃ |
(12.5-12.8) |
( ≥ 11.4) |
( ≥ 12) |
(38-41) |
N42 |
1280-1320 |
≥ 915 |
≥ 955 |
318-342 |
80 ℃ |
(12.8-13.2) |
( ≥ 11.5) |
( ≥ 12) |
(40-43) |
N45 |
1320-1380 |
≥ 923 |
≥ 955 |
342-366 |
80 ℃ |
(13.2-13.8) |
( ≥ 11.6) |
( ≥ 12) |
(43-46) |
N48 |
1380-1420 |
≥ 923 |
≥ 955 |
366-390 |
80 ℃ |
(13.8-14.2) |
( ≥ 11.6) |
( ≥ 12) |
(46-49) |
N50 |
1400-1450 |
≥ 796 |
≥ 876 |
382-406 |
80 ℃ |
(14.0-14.5) |
( ≥ 10.0) |
( ≥ 11) |
(48-51) |
N52 |
1430-1480 |
≥ 796 |
≥ 876 |
398-422 |
80 ℃ |
(14.3-14.8) |
( ≥ 10.0) |
( ≥ 11) |
(50-53) |
33M |
1130-1170 |
≥ 836 |
≥ 1114 |
247-263 |
100 ℃ |
(11.3-11.7) |
( ≥ 10.5) |
( ≥ 14) |
(31-33) |
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) |
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) |
Magnetic properties of Sintered NdFeB magnets: |
Grade |
Remanence |
Coercive Force |
Intrinsic Coercive Force |
Max. energy product |
Max. |
Operating |
Temperature |
Br |
Hcb |
Hcj |
（ BH ）
max |
Tw |
mT |
kA/m |
kA/m |
kJ/m3 |
(kGs) |
(kOe) |
(kOe) |
(MGOe) |
45H |
1320-1360 |
≥ 963 |
≥ 1353 |
326-358 |
120 ℃ |
(13.2-13.6) |
( ≥ 12.1) |
( ≥ 17) |
(43-46) |
48H |
1370-1430 |
≥ 995 |
≥ 1353 |
366-390 |
120 ℃ |
(13.7-14.3) |
( ≥ 12.5) |
( ≥ 17) |
(46-49) |
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 |
1240-1280 |
≥ 939 |
≥ 1592 |
302-326 |
150 ℃ |
(12.5-12.8) |
( ≥ 11.8) |
( ≥ 20) |
(38-41) |
42SH |
1280-1320 |
≥ 987 |
≥ 1592 |
318-342 |
150 ℃ |
(12.8-13.2) |
( ≥ 12.4) |
( ≥ 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 |
≥ 876 |
≥ 1990 |
287-310 |
180 ℃ |
(12.2-12.5) |
( ≥ 11.0) |
( ≥ 25) |
(36-39) |
40UH |
1240-1280 |
≥ 899 |
≥ 1990 |
302-326 |
180 ℃ |
(12.5-12.8) |
( ≥ 11.3) |
( ≥ 25) |
(38-41) |
28EH |
1040-1090 |
≥ 780 |
≥ 2388 |
207-231 |
200 ℃ |
(10.4-10.9) |
( ≥ 9.8) |
( ≥ 30) |
(26-29) |
30EH |
1080-1130 |
≥ 812 |
≥ 2388 |
223-247 |
200 ℃ |
(10.8-11.3) |
( ≥ 10.2) |
( ≥ 30) |
(28-31) |
33EH |
1130-1170 |
≥ 876 |
≥ 2388 |
247-271 |
200 ℃ |
(11.3-11.7) |
( ≥ 10.5) |
( ≥ 30) |
(31-34) |
35EH |
1170-1220 |
≥ 876 |
≥ 2388 |
263-287 |
200 ℃ |
(11.7-12.2) |
( ≥ 11.0) |
( ≥ 30) |
(33-36) |
38EH |
1220-1250 |
≥ 899 |
≥ 2388 |
287-310 |
200 ℃ |
(12.2-12.5) |
( ≥ 11.3) |
( ≥ 30) |
(36-39) |
28AH |
1040-1090 |
≥ 787 |
≥ 2624 |
207-231 |
230 ℃ |
(10.4-10.9) |
( ≥ 9.9) |
( ≥ 33) |
(26-29) |
30AH |
(26-29) |
≥ 819 |
≥ 2624 |
223-247 |
230 ℃ |
(10.8-11.3) |
( ≥ 10.3) |
( ≥ 33) |
(28-31) |
33AH |
1130-1170 |
≥ 843 |
≥ 2624 |
247-271 |
230 ℃ |
(11.3-11.7) |
( ≥ 10.6) |
( ≥ 33) |
(31-34) |
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Available Coatings: |
Surface |
Coating |
Thickness
(Microns) |
Color |
Resistance |
Passivation |
|
1-2 |
Silver Grey |
Temporary Protection |
Nickel |
Ni+Ni |
10-20 |
Bright Silver |
Excellent against Humidity |
Ni+Cu+Ni |
Zinc |
ZN |
8-10 |
Bright Blue |
Good Against Salt Spray |
C-Zn |
Shining Color |
Excellent Against Salt Spray |
CR3+Zinc |
ZN |
8-10 |
Bright Blue |
Good Against Salt Spray |
C-Zn |
Shining Color |
xcellent Against salt Spray |
Tin |
Ni+Cu+Sn |
15-20 |
Silver |
Superior Against Humidity |
Gold |
Ni+Cu+Au |
10-20 |
Gold |
Superior Sgainst Humidity |
Ag |
Ni+Ag |
10-20 |
Silver |
Superior Against Humidity |
Epoxy |
Epoxy |
15-25 |
Black,Grey |
Excellent Against Humidity & Salt Spray |
Ni+Cu+Epoxy |
Zn+Epoxy |
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Advantages:
NdFeB magnets have very high Magnetic properties.
Their (BH)max value is 3 to 10 times higher than sintered ferrite magnets. Hci value is 5 to 10 times higher than sintered ferrite magnets and 5 to 15 times higher than AlNiCo magnets. The potential Magnetic properties of NdFeB magnets are very high. Theoretically, their (BH)max value can be as high as 527 KJ/M3 (66 MGOe).
NdFeB magnets is cheaper than smco.
Since the major raw material Fe is very cheap. The capacity of another major raw material Nd is 10 to 16 times higher than Sm on earth.
So the Price of NdFeB magnets is lower than SmCo magnets. NdFeB magnets’ mechanical property is
better than SmCo magnets and AlNiCo magnets. They can be cut and drilled easily. The
temperature properties of NdFeB magnets are low compare with other magnets. The maximum
working temperature is usually 80ºC ,or 180ºC after special treatment. Disadvantage :NdFeB magnets are very easy to get rusted , they must be protected using special coating, such
as Zn, Ni, Au, Epoxy. |
If you are interested in our Ferrite magnets,please Show the following magnets detail for us to quote you prices:
1.Magnet size and Dimension ,if special shape ,please offer 2.Magnets drawing.
3.Magnetism grade
4.Coating or plating
5.Order Quantities
6.Delivery method
By sea or by air or by air express door to door ,also show your destination port.
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| Our factory produce and manufacture magnets according to customer’s design on shape, dimension, grades, coatings etc. |
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| Contact us |
Ningbo Tongchuang Strong Magnet Material Co., Ltd
Add: Xinzhuang Gaoqiao Yinzhou District,Ningbo City,China
TEL: 86-574- 88170908, 88089786
Fax: 86-574- 88170906, 88089789
E-mail: sales@ndmagnets.com (General Inquiry)
MSN ID: tcmagnet@hotmail.com (On line Chatting) |
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