Mag-Magnet Technology Co., ltd

Mag-Magnet Technology Co., ltd
Address: Room 508 A Area Huafeng Technopark Xinhu Road Baoan Shenzhen 518100 China
Tel: 0086-755-33231556; 0086-755-29418482
Fax:0086-755-29789965
Email: info@mag-magnet.com
www.mag-magnet.com
Skype: walterxia
MSN: magmagnetsz@hotmail.com

NdFeB Magnet



Disk-NdFeB	Ring-NdFeB	Segment-NdFeB

Heteromorphism NdFeB	Block-NdFeB	Cylinder with hole NdFeB

Neodymium (NdFeB) magnet is mainly made of Nd2Fe14B by powder metallurgical method, it has good machine-ability property, its shape has disk, ring, block, segment and heteromorphism. Now develop new product can work well at temperature up to 250℃. Since Neodymium magnet (NdFeB)’ poor corrosion resistance, normal it is plated, such as Zn, Ni, Double Ni, NiCuNi, Epoxy, Au, etc. Neodymium (NdFeB) Magnet has highest cost performance.

Application

Coating

Magnetization Direction

Grade

Physical Characteristics

Production
Flow

Tolerance

Application
Magnetic Separator　　　　　　　　　DC Motor　　　　　　　　　　Servo Motor
Microphone & Speaker　　　　　　　 Computer & Car　　　　　　　Daily products
Sensor & Watch　　　　　　　　　　 MRI

Coatings: Zn, Color Zn, Ni, Double Ni, NiCuNi, Zn-Ni alloy, Ag, Au, Cr, Epoxy, and Passivation.
Properties of the Coatings (Sample Dia12x1.5mm)

Coating Type	Coating Thickness	Corrosion- Resistant in Salt Fog (Hr)	Coating Porosity	Magnetic Flux Lose	Color	PCT(Hr)
Zn	12-15	>24	<0.1	<0.2%	white	>16
Color-Zn	12-15	60	<0.1	<0.1%	color	>24
Ni	12-18	24	<0.2	<0.3%	silver	>16
Double-Ni	16-20	36	<0.1	<0.3%	silver	>24
NiCuNi	16-30	60	<0.1	<0.1%	silver	>30
Zn-Ni	10-20	600	<0.1	<0.1%	color	>90
Epoxy	20-50	240	-	-	black	>24
Passivation	1-4	8	-	-	-	5
Au	8-12	24	<0.1	<0.2%	golden	16

Grade	Remanence				Coercive						Maximum Energy Product				Max Working Temp
	Br				Hcb				Hcj		(BH) max
	KGS		T		KOe		KA/m		KOe	KA/m	MGOe		KJ/m3		℃
	Nom	Min	Nom	Min	Nom	Min	Nom	Min	Min	Min	Nom	Min	Nom	Min	Max Working Temp
N35	12.1	11.8	1.21	1.18	11.4	11	907	876	12	955	35	33	279	263	80
N38	12.6	12.3	1.26	1.23	11.7	11.4	931	907	12	955	38	36	302	287	80
N40	12.9	12.6	1.29	1.26	11.9	11.6	947	923	12	955	40	38	318	302	80
N42	13.3	13	1.33	1.3	12.3	11.9	979	947	12	955	42	40	334	318	80
N45	13.6	13.3	1.36	1.33	12.1	11.8	963	939	12	955	45	43	358	342	80
N48	14	13.5	1.4	1.35	12.1	11.8	963	939	12	955	48	46	382	366	80
N50	14.3	14.0	1.43	1.40	12.3	11.6	979	923	12	955	50	48	398	382	80
38M	12.6	12.3	1.26	1.23	12.2	11.7	971	931	14	1114	38	36	302	287	100
40M	12.9	12.6	1.29	1.26	12.3	11.8	979	939	14	1114	40	38	318	302	100
42M	13.3	13	1.33	1.3	12.4	12	987	955	14	1114	42	40	334	318	100
45M	13.6	13.3	1.36	1.33	12.1	11.8	963	939	14	1114	45	43	358	342	100
48M	13.9	13.6	1.39	1.36	12.9	12.3	1027	979	14	1114	50	48	398	382	100
30H	11.2	10.8	1.12	1.08	10.7	10.2	852	812	17	1353	30	28	239	223	120
35H	12.1	11.8	1.21	1.18	11.6	11.1	923	884	17	1353	35	33	279	263	120
38H	12.6	12.3	1.26	1.23	12.1	11.7	963	931	17	1353	38	36	302	287	120
40H	13	12.6	1.3	1.26	12.0	11.5	955	915	17	1353	40	38	318	302	120
42H	13.1	12.8	1.31	1.28	12.0	11.5	955	915	17	1353	42	40	334	318	120
44H	13.5	13.2	1.35	1.32	12.0	11.5	955	915	17	1353	45	42	358	334	120
46H	13.7	13.4	1.37	1.34	13.0	12.6	1035	1003	17	1353	46	44	366	350	120
30SH	11.2	10.8	1.12	1.08	10.7	10.2	852	812	20	1592	30	28	239	223	150
35SH	12	11.7	1.2	1.17	11.6	11.1	923	884	20	1592	35	33	279	263	150
38SH	12.6	12.3	1.26	1.23	12.1	11.7	963	931	20	1592	38	36	302	287	150
40SH	13.0	12.6	1.30	1.26	12.3	12.0	979	955	20	1592	40	38	318	302	150
42SH	13.1	12.8	1.31	1.28	12.4	12.1	987	963	20	1592	42	40	334	318	150
44SH	13.5	13.2	1.35	1.32	12.8	12.4	1019	987	20	1592	44	42	350	334	150
28UH	10.9	10.5	1.09	1.05	10.4	10	828	796	25	1990	28	26	223	207	180
30UH	11.2	10.8	1.12	1.08	10.3	10	820	796	25	1990	30	28	239	223	180
33UH	11.5	11.1	1.15	1.11	10.8	10.5	860	836	25	1990	33	31	263	247	180
35UH	12.0	11.7	1.20	1.17	11.6	11.1	923	884	25	1990	35	33	279	263	180
38UH	12.6	12.3	1.26	1.23	12.1	11.7	963	931	25	1990	38	36	302	287	180
40UH	13.0	12.6	1.30	1.26	12.3	12.0	979	955	25	1990	40	38	318	302	180
42UH	13.1	12.8	1.31	1.28	12.4	12.1	987	963	25	1990	42	40	334	318	180
30EH	11.2	10.8	1.12	1.08	10.3	10.0	820	796	30	2388	30	28	239	223	200
33EH	11.5	11.1	1.15	1.11	10.8	10.5	860	836	30	2388	33	31	263	247	200
35EH	12.0	11.7	1.20	1.17	11.6	11.1	923	884	30	2388	35	33	279	263	200

Tolerance:
Shape: Disk, Ring, Block, Segment, Heteromorphism. OD, ID, L, W, T stands for outer diameter, inner diameter, length, width

Dimension Range	OD	ID	L	W	T	Planar	Parallel	Perpendicular	Columnar	Concentricity
S≤5	+/-0.03	+/-0.03	+/-0.04	+/-0.04	+/-0.04	0.02	0.03	0.03	0.02	0.04
5<S≤10	+/-0.04	+/-0.04	+/-0.04	+/-0.04	+/-0.04	0.02	0.04	0.05	0.02	0.05
10<S≤20	+/-0.05	+/-0.05	+/-0.05	+/-0.05	+/-0.05	0.03	0.05	0.08	0.03	0.10
20<S≤30	+/-0.05	+/-0.06	+/-0.06	+/-0.06	+/-0.05	0.04	0.05	0.10	0.03	0.15
30<S≤40	+/-0.06	+/-0.07	+/-0.06	+/-0.06	+/-0.06	0.05	0.08	0.20	0.04	0.20
40<S≤50	+/-0.10	+/-0.10	+/-0.10	+/-0.10	+/-0.08	0.05	0.10	0.25	0.05	0.20
S>50	+/-0.10	+/-0.10	+/-0.10	+/-0.10	+/-0.10	0.06	0.10	0.30	0.06	0.20

and thickness. All the units in mm, S stands for size.