Neodymium-iron-boron magnet is one kind of the permanent magnets. Material Grade of NdFeB magnets: Magnet N-( N35, N38, N40, N42, N45, N48, N50), Magnet M-(35M, 38M, 40M, 42M, 45M, 48M), Magnet H-(35H, 38H, 40H, 42H, 45H), Magnet SH-(30SH, 33SH, 35SH, 38SH, 40SH, 42SH), Magnet UH-( 28UH, 30UH, 33UH, 35UH, 38UH), Magnet EH-(28EH, 30EH, 30EH, 33EH, 35EH)
1) Application of NdFeB magnet: Toys, package, Printer, Switchboard, Phone, voice coil motors (VCM's) in hard disk drives, high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, loudspeakers etc.
2) The coating of NdFeB magnets can be Zn, Ni, Ni-Cu-Ni, Epoxy, CR3+ZN, NI+AG, NI+AU.
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NdFeB
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No.
Coating
Thickness
Color
Working Temperature
PCT
SST
Surface Tension
Characteristic
1
Cr3+Zn
3-8um
Bright Blue
≤160ºC
>24H
>24H-48H
>32mN/m
, Regular Protection,applicable to most productsÂ
2
Color Zn
4-8um
Shining Color
≤160ºC
>24H
>48H-72H
>32mN/m
Excellent salt Spray Resistance
3
NiCuNi
10-20um
Bright Silver
≤200ºC
>48H-72H
>24H-72H
>32mN/m
, Excellent Humidity ,heat& Salt spray Resistance
4
Electroless Nickel
10-30um
Bright Silver
≤200ºC
>72H
>96H
>32mN/m
, Excellent Humidity ,heat& Salt spray Resistance
5
Black Nickel
10-20um
Bright Black
≤200ºC
>72H
>48H-96H
>32mN/m
, Excellent Humidity ,heat& Salt spray Resistance
6
Epoxy
10-30um
Black or Gray
≤200ºC
>72H
>72H-108H
Â
,, Good insulation ,excellent humidity,heat@salt spray resistanceÂ
7
NiCu+Epoxy
10-30um
Black or Gray
≤200ºC
>72H
>72H-108H
Â
,, Good insulation ,excellent humidity,heat@salt spray resistanceÂ
8
PhosphatedÂ
≤1um
Dark Grey
≤200ºC
Â
≤2.5H Emerge in 3% NaCl Liquor
>36mN/m
, Temporary Protection ,good adhensive force with gluingÂ
9
Everlube
8-20um
Yellow
≤160ºC
>72H
>96H
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, Ecellent Salt Spray Resistance,excellent adhension
10
NiCuNi+ Au
10-15um
Golden
≤160ºC
>48H
>12H
>32mN/m
Good looking
11
Sn
10-25um
Bright Silver
≤160ºC
>48H
>36H-72h
>32mN/m
, Excellent Humidity ,heat& Salt spray Resistance
3) Our factory can also manufacture various sizes of NdFeB magnet, according to the customer's specification HS Code: 85051110 Model: Magnet TC888 Standard: ISO9001: 2000 & SGS Origin: China Packing: Carton Transportation: By Express/By Sea /By Air
Magnetic properties of Sintered NdFeB magnets: Â
Grade Â
Remanence Â
Coercive Force Â
Intrinsic Coercive Force Â
Max. energy product Â
Max. Â
Operating Â
Temperature Â
Br Â
Hcb Â
Hcj Â
(BH ) Â
Tw Â
max  Â
mT Â
kA/m Â
kA/m Â
kJ/m3 Â
(kGs) Â
(kOe) Â
(kOe) Â
(MGOe) Â
N35 Â
1170-1220 Â
>= 868 Â
>=955 Â
263-287 Â
80°C Â
(11.7-12.2) Â
( >= 10.9) Â
( >= 12) Â
(33-36) Â
N38 Â
1220-1250 Â
>=899 Â
>=955 Â
287-310 Â
80°C Â
(12.2-12.5) Â
( >= 11.3) Â
( >= 12) Â
(36-39) Â
N40 Â
1250-1280 Â
>= 907 Â
>=955 Â
302-326 Â
80°C Â
(12.5-12.8) Â
( >= 11.4) Â
( >= 12) Â
(38-41) Â
N42 Â
1280-1320 Â
>= 915 Â
>=955 Â
318-342 Â
80°C Â
(12.8-13.2) Â
( >= 11.5) Â
( >= 12) Â
(40-43) Â
N45 Â
1320-1380 Â
>= 923 Â
>=955 Â
342-366 Â
80°C Â
(13.2-13.8) Â
( >= 11.6) Â
( >= 12) Â
(43-46) Â
N48 Â
1380-1420 Â
>= 923 Â
>=955 Â
366-390 Â
80°C Â
(13.8-14.2) Â
( >=11.6) Â
( >= 12) Â
(46-49) Â
N50 Â
1400-1450 Â
>= 796 Â
>=955 Â
382-406 Â
80°C Â
(14.0-14.5) Â
( >= 10.0) Â
( >= 12) Â
(48-51) Â
N52 Â
1430-1480 Â
>= 796 Â
>=955 Â
398-422 Â
80°C Â
(14.3-14.8) Â
( >= 10.0) Â
( >= 12) Â
(50-53) Â
33M Â
1130-1170 Â
>= 836 Â
>= 1114 Â
247-263 Â
100°C Â
(11.3-11.7) Â Â
(>= 10.5) Â
( >= 14) Â
(31-33) Â
35M Â
1170-1220 Â
>= 868 Â
>= 1114 Â
263-287 Â
100°C Â
(11.7-12.2) Â
( >= 10.9) Â
( >= 14) Â Â
(33-36) Â
38M Â
1220-1250 Â
>= 899 Â
>= 1114 Â
287-310 Â
100°C Â
(12.2-12.5) Â
( >= 11.3) Â
( >= 14) Â
(36-39) Â
40M Â
1250-1280 Â
>= 923 Â
>= 1114 Â
302-326 Â
100°C Â
(12.5-12.8) Â
( >= 11.6) Â
( >= 14) Â
(38-41) Â
42M Â
1280-1320 Â
>= 955 Â Â
>= 1114 Â Â
318-342 Â Â
100°C Â
(12.8-13.2) Â
( >= 12.0) Â
( >= 14) Â
(40-43) Â
45M Â
1320-1380 Â
>= 995 Â
>= 1114 Â
342-366 Â
100°C Â
(13.2-13.8) Â
( >= 12.5) Â
( >= 14) Â
(43-46) Â
48M Â
1360-1430 Â
>= 1027 Â
>= 1114 Â
366-390 Â
100°C Â
(13.6-14.3) Â
( >= 12.9) Â
( >= 14) Â
(46-49) Â
50M Â
1400-1450 Â
>= 1033 Â
>= 1114 Â
382-406 Â
100°C Â
(14.0-14.5) Â
( >= 13.0) Â
( >= 14) Â
(48-51) Â
35H Â
1170-1220 Â
>= 868 Â
>= 1353 Â
263-287 Â
120°C Â
(11.7-12.2) Â
( >= 10.9) Â
( >= 17) Â
(33-36) Â
38H Â
1220-1250 Â
>= 899 Â
>= 1353 Â
287-310 Â
120°C Â
(12.2-12.5) Â
( >= 11.3) Â
( >= 17) Â
(36-39) Â
40H Â
1250-1280 Â
>= 923 Â
>= 1353 Â
302-326 Â
120°C Â
(12.5-12.8) Â
( >= 11.6) Â
( >= 17) Â
(38-41) Â
42H Â
1280-1320 Â
>= 955 Â
>= 1353 Â
318-342 Â
120°C Â
(12.8-13.2) Â
( >= 12.0) Â
( >= 17) Â
(40-43) Â
45H Â
1320-1360 Â
>= 963 Â
>= 1353 Â
326-358 Â
120°C Â
(13.2-13.6) Â
( >= 12.1) Â
( >= 17) Â
(43-46) Â
48H Â
1370-1430 Â
>= 995 Â
>= 1353 Â
366-390 Â
120°C Â
(13.7-14.3) Â
( >= 12.5) Â
( >= 17) Â
(46-49) Â
35SH Â
1170-1220 Â
>= 876 Â
>= 1592 Â
263-287 Â
150°C Â
(11.7-12.2) Â
( >= 11.0) Â
( >= 20) Â
(33-36) Â
38SH Â
1220-1250 Â
>= 907 Â
>= 1592 Â
287-310 Â
150°C Â
(12.2-12.5) Â
( >= 11.4) Â
( >= 20) Â
(36-39) Â
40SH Â
1240-1280 Â
>= 939 Â
>= 1592 Â
302-326 Â
150°C Â
(12.5-12.8) Â
( >= 11.8) Â
( >= 20) Â
(38-41) Â
42SH Â
1280-1320 Â
>= 987 Â
>= 1592 Â
318-342 Â
150°C Â
(12.8-13.2) Â
( >= 12.4) Â
( >= 20) Â
(40-43) Â
45SH Â
1320-1380 Â
>= 1003 Â
>= 1592 Â
342-366 Â
150°C Â
(13.2-13.8) Â
( >= 12.6) Â
( >= 20) Â
(43-46) Â
28UH Â
1020-1080 Â
>= 764 Â
>= 1990 Â
207-231 Â
180°C Â
(10.2-10.8) Â
( >= 9.6) Â
( >= 25) Â
(26-29) Â
30UH Â
1080-1130 Â
>= 812 Â
>= 1990 Â
223-247 Â
180°C Â
(10.8-11.3) Â
( >= 10.2) Â
( >= 25) Â
(28-31) Â
33UH Â
1130-1170 Â
>= 852 Â
>= 1990 Â
247-271 Â
180°C Â
(11.3-11.7) Â
( >= 10.7) Â
( >= 25) Â
(31-34) Â
35UH Â
1180-1220 Â
>= 860 Â
>= 1990 Â
263-287 Â
180°C Â
(11.8-12.2) Â
( >= 10.8) Â
( >= 25) Â
(33-36) Â
38UH Â
1220-1250 Â
>= 876 Â
>= 1990 Â
287-310 Â
180°C Â
(12.2-12.5) Â
( >= 11.0) Â
( >= 25) Â
(36-39) Â
40UH Â
1240-1280 Â
>= 899 Â
>= 1990 Â
302-326 Â
180°C Â
(12.5-12.8) Â
( >=11.3) Â
( >= 25) Â
(38-41) Â
28EH Â
1040-1090 Â
>= 780 Â
>= 2388 Â
207-231 Â
200°C Â
(10.4-10.9) Â
( >= 9.8) Â
( >= 30) Â
(26-29) Â
30EH Â
1080-1130 Â
>= 812 Â
>= 2388 Â
223-247 Â
200°C Â
(10.8-11.3) Â
( >= 10.2) Â
( >= 30) Â
(28-31) Â
33EH Â
1130-1170 Â
>= 876 Â
>= 2388 Â
247-271 Â
200°C Â
(11.3-11.7) Â
( >= 10.5) Â
( >= 30) Â
(31-34) Â
35EH Â
1170-1220 Â
>= 876 Â
>= 2388 Â
263-287 Â
200°C Â
(11.7-12.2) Â
( >= 11.0) Â
( >= 30) Â
(33-36) Â
38EH Â
1220-1250 Â
>= 899 Â
>= 2388 Â
287-310 Â
200°C Â
(12.2-12.5) Â
( >= 11.3) Â
( >= 30) Â
(36-39) Â
28AH Â
1040-1090 Â
>=787 Â
>= 2624 Â
207-231 Â
230°C Â
(10.4-10.9) Â
( >= 9.9) Â
( >= 33) Â
(26-29) Â
30AH Â
(26-29) Â
>=819 Â
>= 2624 Â
223-247 Â
230°C Â
(10.8-11.3) Â
( >= 10.3) Â
( >= 33) Â
(28-31) Â
33AH Â
1130-1170 Â
>= 843 Â
>= 2624 Â
247-271 Â
230°C Â
(11.3-11.7) Â
(>= 10.6) Â
( >= 33) Â
(31-34) Â
 Note: @ The above-mentioned data of magnetic parameters and physical properties are given at room temperature. @ The maximum working temperature of magnet is changeable due to ratio of length and diameter and environment factors