Thin round neodymium magnets - Shandong Shangda Rare Earth Material Co.,Ltd.

Grade	Residual Indusction		Coercive Force		Intrinsic Coercive?Force		Max Energy product		temp coefficient				Max working temperature
	（Br）		(HCb)		(HCj)		(BH)Max		20-100℃		20 – max WT		PC=2.17
	KGs	T	KOe	KA/m	KOe	KA/m	MGOe	KJ/m3	%/℃(Br)	%/℃(HCj)	%/℃(Br)	%/℃(HCj)	℃
N35	11.7-12.2	1.17-1.22	≥10.9	≥868	≥12	≥955	33-36	263-287	-0.12	-0.76			80
N38	12.2-12.5	1.22-1.25	≥11.3	≥899	≥12	≥955	36-39	287-310	-0.12	-0.76			80
N40	12.5-12.8	1.25-1.28	≥11.4	≥907	≥12	≥955	38-41	302-326	-0.12	-0.76			80
N42	12.8-13.2	1.28-1.32	≥11.5	≥915	≥12	≥955	40-43	318-342	-0.12	-0.76			80
N45	13.2-13.8	1.32-1.38	≥11.6	≥923	≥12	≥955	43-46	342-366	-0.12	-0.76			80
N48	13.8-14.2	1.38-1.42	≥11.6	≥923	≥12	≥955	46-49	366-390	-0.12	-0.76			80
N50	14.0-14.5	1.40-1.45	≥11.4	≥907	≥12	≥955	48-51	382-406	-0.12	-0.76			80
N52	14.3-14.8	1.43-1.48	≥11.4	≥907	≥12	≥955	50-53	398-422	-0.12	-0.76			80
N55	14.5-15.1	1.45-1.51	≥11.4	≥868	≥12	≥955	52-55	414-438	-0.12	-0.76			80
N33M	11.2-12.7	1.12-1.27	≥10.7	≥852	≥14	≥1114	31-34	247-271	-0.115	-0.7			100
N35M	11.7-12.2	1.17-1.22	≥10.9	≥868	≥14	≥1114	33-36	263-287	-0.115	-0.7			100
N38M	12.2-12.5	1.22-1.25	≥11.3	≥899	≥14	≥1114	36-39	287-310	-0.115	-0.7			100
N40M	12.5-12.8	1.25-1.28	≥11.6	≥923	≥14	≥1114	38-41	302-326	-0.115	-0.7			100
N42M	12.8-13.2	1.28-1.32	≥12.0	≥955	≥14	≥1114	40-43	318-342	-0.115	-0.7			100
N45M	13.2-13.8	1.32-1.38	≥12.5	≥995	≥14	≥1114	43-46	342-366	-0.115	-0.7			100
N48M	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥14	≥1114	46-49	366-390	-0.115	-0.7			100
N50M	14.0-14.5	1.40-1.45	≥13.0	≥1033	≥14	≥1114	48-51	382-406	-0.115	-0.7			100
N52M	14.3-14.8	1.43-1.48	≥13.2	≥1050	≥14	≥1114	50-53	398-422	-0.115	-0.7			100
N30H	10.8-11.2	1.08-1.12	≥10.3	≥820	≥17	≥1353	28-31	223-247	-0.11	-0.65	-0.115	-0.62	120
N33H	11.2-11.7	1.12-1.17	≥10.7	≥852	≥17	≥1353	31-34	247-271	-0.11	-0.65	-0.115	-0.62	120
N35H	11.7-12.2	1.17-1.22	≥10.9	≥868	≥17	≥1353	33-36	263-287	-0.11	-0.65	-0.115	-0.62	120
N38H	12.2-12.5	1.22-1.25	≥11.3	≥899	≥17	≥1353	36-39	287-310	-0.11	-0.65	-0.115	-0.62	120
N40H	12.5-12.8	1.25-1.28	≥11.6	≥923	≥17	≥1353	38-41	302-326	-0.11	-0.65	-0.115	-0.62	120
N42H	12.8-13.2	1.28-1.32	≥12.0	≥955	≥17	≥1353	40-43	318-342	-0.11	-0.65	-0.115	-0.62	120
N48H	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥17	≥1353	46-49	366-390	-0.11	-0.65	-0.115	-0.62	120
N50H	14.0-14.5	1.40-1.45	≥13.0	≥1033	≥17	≥1353	48-51	382-406	-0.11	-0.72	-0.115	0.66	120
N30SH	10.8-11.2	1.08-1.12	≥10.3	≥820	≥20	≥1592	28-31	223-247	-0.105	-0.6	-0.115	0.55	150
N33SH	11.2-11.7	1.12-1.17	≥10.7	≥852	≥20	≥1592	31-34	247-271	-0.105	-0.6	-0.115	0.55	150
N35SH	11.7-12.2	1.17-1.22	≥11.0	≥876	≥20	≥1592	33-36	263-287	-0.105	-0.6	-0.115	-0.55	150
N38SH	12.2-12.5	1.22-1.25	≥11.4	≥907	≥20	≥1592	36-39	287-310	-0.105	-0.6	-0.115	-0.55	150
N40SH	12.5-12.8	1.25-1.28	≥11.9	≥947	≥20	≥1592	38-41	302-326	-0.105	-0.6	-0.115	-0.55	150
N42SH	12.8-13.2	1.28-1.32	≥12.4	≥987	≥20	≥1592	40-43	318-342	-0.105	-0.6	-0.115	-0.55	150
N45SH	13.2-13.8	1.32-1.38	≥12.6	≥1003	≥20	≥1592	43-46	342-366	-0.105	-0.6	-0.115	-0.55	150
N48SH	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥20	≥1592	46-49	366-390	-0.105	-0.6	-0.115	-0.55	150
N30UH	10.8-11.2	1.08-1.12	≥10.3	≥820	≥25	≥1990	28-31	223-247	-0.09	-0.55	-0.11	-0.51	180
N33UH	11.2-11.7	1.12-1.17	≥10.7	≥852	≥25	≥1990	31-34	247-271	-0.09	-0.55	-0.11	-0.51	180
N35UH	11.7-12.2	1.17-1.22	≥11.0	≥876	≥25	≥1990	33-36	263-287	-0.09	-0.55	-0.11	-0.51	180
N38UH	12.2-12.5	1.22-1.25	≥11.4	≥907	≥25	≥1990	36-39	287-310	-0.09	-0.55	-0.11	-0.51	180
N40UH	12.5-12.8	1.25-1.28	≥11.9	≥947	≥25	≥1990	38-41	302-326	-0.09	-0.55	-0.11	-0.51	180
N42UH	12.8-13.2	1.28-1.32	≥12.4	≥987	≥25	≥1990	40-43	318-342	-0.09	-0.55	-0.11	-0.51	180
N45UH	13.2-13.8	1.32-1.38	≥12.6	≥1003	≥20	≥1592	43-46	342-366	-0.09	-0.55	-0.11	-0.51	180
N48UH-G	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥20	≥1592	46-49	366-390	-0.09	-0.55	-0.11	-0.51	180
N30EH	10.8-11.3	1.08-1.13	≥10.2	≥812	≥30	≥2388	28-31	223-247	-0.085	-0.51	-0.105	-0.45	200
N33EH	11.3-11.7	1.13-1.17	≥10.5	≥836	≥30	≥2388	31-34	247-271	-0.085	-0.51	-0.105	-0.45	200
N33EH	11.3-11.7	1.13-1.17	≥10.5	≥836	≥30	≥2388	31-34	247-271	-0.085	-0.51	-0.105	-0.45	200
N35EH	11.7-12.2	1.17-1.22	≥11.0	≥876	≥30	≥2388	33-36	263-287	-0.085	-0.51	-0.105	-0.45	200
N38EH	12.2-12.5	1.22-1.25	≥11.4	≥907	≥30	≥2388	36-39	287-310	-0.093	-0.51	-0.105	-0.45	200
N40EH	12.5-12.8	1.25-1.28	≥11.9	≥947	≥30	≥2388	38-41	302-326	-0.093	-0.51	-0.105	-0.45	200
N42EH-G	12.8-13.2	1.28-1.32	≥12.4	≥987	≥30	≥2388	40-43	318-342	-0.093	-0.51	-0.105	-0.45	200
The above –mentioned data of magnetic properties and physical properties are given at 20°C±2°C. Test sample is polished dia 10 X 7 without chamfering and plating. max WT = Max work Temperature
The max working temperature of magnet is changeable due to length-diameter ration, coating thickness and working environment factors, Normal It is tested the inevitable loss of magnetic force is less than 5% .
G Seriers (N54H-G / N52SH-G) is produced by Grain boundary diffusion process technology, It only suits for finished magnet＇s magnetization direction is less than 6MM.
F?Seriers (N54H-F / N52SH-F) is produced by without heavy rare earth process technology .

Parameter	Unit	Indicator
Density	g/cm3	≥7.3
Curie Temperature	℃	310-380
Br Reversible Temperature Coefficient	℃/%	-0.090~-0.130
Hcj Reversible Temperature Coefficient	℃/%	﹣0.40~﹣0.70
Compressive Strength	N/mm2	1050
Bending Strength	N/mm2	250
Tensile Strength	N/mm2	80
Vickers Hardness		600
Coefficient Of The rmal Expansion (20 to 200℃)	10-6/k	∥5⊥-1.5
Specific Heat	J/(Kg.K)	460
Thermal Conductivity	W/(m.K)	June 9
Resistivity	μΩ.cm	150
The above–mentioned data of magnetic properties and physical properties are given 20°C±2°C . Test sample is polished dia 10 X 7 without chamfering and plating. The max working temperature of magnet is changeable due to length-diameter ration, coating thickness and working environment factors . The inevitable loss of magnetic force is no more than 5% which test Dia 10 X 7 sample’s max working temperature

Products Postoring / Dimension Range	Disk、Ring、Block、 Heteromorphism
	OD	ID	L	W	T	Planar	Parallel	Perpendicular	Colcmnar	Concentricity
≤5	0.03	0.03	0.04	0.04	0.04	0.02	0.03	0.03	0.02	0.04

5	0.04	0.04	0.04	0.04	0.03	0.02	0.04	0.05	0.02	0.05

10	0.05	0.05	0.05	0.05	0.05	0.03	0.05	0.08	0.03	0.1

20	0.05	0.06	0.06	0.06	0.306	0.04	0.05	0.1	0.03	0.15

30	0.06	0.07	0.06	0.06	0.06	0.05	0.08	0.2	0.04	0.2

50	0.08	0.08	0.1	0.1	0.1	0.05	0.1	0.25	0.05	0.2

>60	0.1	0.1	0.1	0.1	0.1	0.06	0.1	0.3	0.06	0.2

Shape	Schematic Diagram	Range	Economic Dimensions
Block		L ≤ 200 MM	L ≤ 100 MM
		W≤ 200 MM	W≤ 50 MM
		H≤ 60 MM	H≤ 50 MM
		L/W ≤ 20	L/W ≤ 5
Disc		D ≤ 200 MM	D ≤ 150 MM
Disc		H≤ 50 MM	H≤ 40 MM
Ring		OD ≤ 200 MM	OD ≤ 150 MM
		ID ≥ 0.8 MM	ID ≥ 2 MM
		(OD-ID) / 2 ≥ 1.0MM	(OD-ID) / 2 ≥ 2.0MM
		ID/OD ≤ 0.8	ID/OD ≤ 0.6
		H≤ 50 MM	H≤ 40 MM
Bread		L ≤ 200 MM	L ≤ 100 MM
		W≤ 100 MM	W≤ 50 MM
		H≤ 60 MM	H≤ 40 MM
		L/H ≤ 20	L/H ≤ 10
Arc		L ≤ 200 MM	L ≤ 200 MM
		W≤ 200 MM	W≤ 200 MM
		1.5 MM ≥ H ≤ 60 MM	1.5 MM ≥ H ≤ 60 MM
		T≤ 50 MM	T≤ 40 MM
		L/H ≤ 10	L/H ≤ 5
		A ≤ 180	A ≤ 90
sector		W ≤ 150 MM	W ≤ 100 MM
		H≤ 80 MM	H≤ 80 MM
		T≤ 50 MM	T≤ 50 MM
		W/H ≤ 5	W/H ≤ 3
		W/T ≤ 30	W/T ≤ 30
trapezium		W1 ≤ 180 MM	W1 ≤ 100 MM
		W2 ≤ 150 MM	W2 ≤ 80 MM
		H≤ 100 MM	H≤ 60 MM
		T≤ 50 MM	T≤ 40 MM
		W1/T ≤ 30	W1/T ≤ 20
		W2/T ≤ 20	W2/T ≤ 10

Coating materials	Thickness of Coating layer	Physical properties	Max work Temperature	PCT	SST
Passvation	0-02μm	Colorless or light gray layer	—	—	—
Zn	8-15μm	Layer color: blue and white, .Coating layer is compact, stable and homogeneous.	≤160℃	—	＞24hr
Colur ZN	10-15μm		≤160℃	—	＞24hr
Ni＋Sn	10-30μm		≤160℃	＞48hr	＞96hr
Ni	15-30μm	Homogeneous and Light yellow layer.	≤200℃	＞24hr	＞48hr
Double Ni( Ni+Cu+Ni)	20-30μm		≤200℃	＞48hr	＞96hr
Electroless NI	20-30μm		≤200℃	＞48hr	＞96hr
Al Spraying	6-20μm	dark silver, silver white layer with certain luster.	≤200℃	＞48hr	＞288hr
IVD Al	10-30μm	dark silver, silver white layer with certain luster.	≤400℃	＞48hr	＞288hr
Epoxy	10-20μm	black, gray layer with certain luster.	≤200℃	＞48hr	＞96hr
Ni+Cu+epoxy	15-30μm		≤200℃	＞72hr	＞96hr
Zn+expory	15-25μm		≤200℃	＞72Hr	＞96hr
Zintek	10-30μm	black, gray layer with certain luster.	≤200℃	＞200Hr	＞800hr
Zintek+epoxy	20-30μm	black, gray layer with certain luster.	≤200℃	＞200Hr	＞1500hr

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