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Model NO.: Permanent Magnet D18
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Shape: Ring
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Grade: N, M, H, Sh, Eh, Uh Series
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Composition: NdFeB
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Plating: Gold
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Trademark: HHS MAG
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Origin: Ningbo, China
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Application: Industrial Magnet, Jewelry Magnet
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Coating: Golden
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Type: Permanent
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Material: Neodymium & NdFeB
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Tolerance: +/-0.1mm
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Transport Package: Standard Export Carton, Pallet
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HS Code: 85051190
Dimension Range of Sintered NdFeB
 |
Length (OD)Â mm |
Width (ID)Â mm |
Thickness (mm) |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Block |
1 |
150 |
1 |
100 |
0.5 |
150 |
Ring |
1 |
180 |
1 |
140 |
0.6 |
50 |
Disc/Bar |
1 |
150 |
  |
  |
0.6 |
50 |
 |
Length |
Chord Length |
 |
 |
Min. |
Max |
Min. |
Max. |
 |
 |
Segment |
3 |
50 |
5 |
150 |
  |
  |
Magnetic Characteristics and Physical Properties of Sintered NdFeB
Grade |
Remanence |
Coercive Force |
Intrinsic Coercive force |
Max Energy Product |
Highest Work temperature |
Br |
Hcb |
Hci |
(BH) max |
T |
KGs |
KOe |
KA/m |
KOe |
KA/m |
MGOe |
KJ/m |
ºC |
N35 |
1.16-1.22 |
11.6-12.2 |
11 |
876 |
12 |
955 |
33-36 |
263-287 |
80 |
N38 |
1.22-1.27 |
12.2-12.7 |
11 |
876 |
12 |
955 |
36-39 |
287-310 |
80 |
N40 |
1.25-1.31 |
12.5-1.31 |
11 |
876 |
12 |
955 |
38-41 |
303-326 |
80 |
N42 |
1.28-1.34 |
12.8-13.4 |
11 |
876 |
12 |
955 |
40-43 |
318-342 |
80 |
N45 |
1.32-1.38 |
13.2-13.8 |
11 |
876 |
12 |
955 |
43-46 |
342-366 |
80 |
N48 |
1.37-14.3 |
13.7-14.3 |
10.5 |
836 |
11.5 |
915 |
46-49 |
366-390 |
80 |
N50 |
1.40-1.46 |
14.0-14.6 |
10.5 |
836 |
11.5 |
915 |
48-51 |
382-406 |
80 |
N52 |
1.43-1.49 |
14.3-14.9 |
10.5 |
836 |
11.5 |
915 |
50-53 |
398-422 |
80 |
N30M |
1.08-1.14 |
10.8-11.4 |
9.8 |
780 |
14 |
1114 |
28-31 |
223-247 |
100 |
N33M |
1.14-1.18 |
11.4-11.8 |
10.3 |
820 |
14 |
1114 |
31-33 |
247-263 |
100 |
N35M |
1.6-1.22 |
11.6-12.2 |
10.6 |
845 |
14 |
1114 |
33-36 |
263-287 |
100 |
N38M |
1.23-1.27 |
12.3-12.7 |
11 |
876 |
14 |
1114 |
38-41 |
303-326 |
100 |
N40M |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
14 |
1114 |
38-41 |
303-326 |
100 |
N42M |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
14 |
1114 |
40-43 |
318-342 |
100 |
N45M |
1.32-1.38 |
13.2-13.8 |
12.2 |
976 |
14 |
1114 |
43-46 |
342-366 |
100 |
N48M |
1.37-1.43 |
13.7-14.3 |
12.7 |
1012 |
13.5 |
1075 |
46-49 |
366-390 |
100 |
N50M |
1.40-1.46 |
14.0-14.6 |
13 |
1035 |
13.5 |
1075 |
48-51 |
382-406 |
100 |
N35H |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
17 |
1353 |
33-36 |
263-287 |
120 |
N38H |
1.21-1.27 |
12.1-12.7 |
11.1 |
886 |
17 |
1353 |
36-39 |
287-310 |
120 |
N40H |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
17 |
1353 |
38-41 |
303-326 |
120 |
N42H |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
16.5 |
1313 |
40-43 |
318-342 |
120 |
N45H |
1.32-1.38 |
13.2-13.8 |
12.2 |
976 |
16 |
1274 |
43-46 |
342-366 |
120 |
N30SH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
20 |
1592 |
28-31 |
223-247 |
150 |
N33SH |
1.22-1.19 |
1.14-1.18 |
10.2 |
816 |
20 |
1592 |
31-34 |
247-271 |
150 |
N35SH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
20 |
1592 |
33-36 |
263-287 |
150 |
N38SH |
1.21-12.7 |
12.1-12.7 |
11.1 |
886 |
20 |
1592 |
36-39 |
278-310 |
150 |
N40SH |
1.25-1.31 |
12.5-13.1 |
11.5 |
912 |
20 |
1592 |
38-41 |
302-326 |
150 |
N42SH |
1.28-1.34 |
12.8-13.4 |
11.8 |
938 |
20 |
1592 |
40-43 |
318-342 |
150 |
N30UH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
25 |
1990 |
28-31 |
223-247 |
180 |
N33UH |
1.12-1.19 |
11.2-11.9 |
10.2 |
816 |
25 |
1991 |
31-34 |
247-271 |
180 |
N35UH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
24 |
1910 |
33-36 |
263-287 |
180 |
N38UH |
1.21-1.27 |
12.1-12.7 |
11.1 |
886 |
24 |
1910 |
36-39 |
287-310 |
180 |
N30EH |
1.07-1.14 |
10.7-11.4 |
9.7 |
772 |
30 |
2388 |
28-31 |
223-247 |
200 |
N33EH |
1.12-1.19 |
11.2-11.9 |
10.2 |
816 |
30 |
2388 |
31-34 |
247-271 |
200 |
N35EH |
1.16-1.22 |
11.6-12.2 |
10.6 |
845 |
30 |
2388 |
33-36 |
263-287 |
200 |
Physical Properties of Sintered NdFeB Material
Properties |
Unit |
Parameter |
Curie Point |
ºC |
310-340 |
((Br)/ (%/K)Temp.Coeff.of Br |
%ºC |
-0.08 ~ - 0.12 |
(β(Hcj/%/K)Temp.Coeff.of Hcj |
%ºC |
-0.42 ~ -0.70 |
Density |
g/cm3 |
≥7.3 |
Vickers Hardness |
Hv |
600 |
Bending strength |
Mpa |
250 |
Tensile strength |
Mpa |
80 |
Compressive strength |
Mpa |
1050 |
Electrical resistivity |
μΩcm |
150 |
Thermal conductivity |
W/(m.ºC) |
6 ~8 Â Â |
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