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	Hard Ferrite Magnet

	Sinter NdFeB

	Type of Magnetization

Choosing a Magnet

Magnetic Audit

Magnet Property

Magnetic Properties of Hard Ferrite Magnet
Grade	Residual	Coercive Force	Intrinsic Coercive Force	Max Energy Products	Operating	Density
	Flux Density Br	Hcb	Hcj	(BH) max	Temperature	D
	Gs (mT)	Oe (kA/m)	Oe (kA/m)	MGOe (kJ/m3)	ÆC	g/cm3
Y10T	>=2000 (>=200)	1600~2000 (128~160)	2889~3391 (230-270)	0.8~1.2 (6.4~9.6)	<=250	4.5~4.9
Y20	3200~3800 (320~380)	1600~2400 (128~192)	1884~3014 (150~240)	2.3~2.7 (18.3~21.5)	<=250	4.5~4.9
Y25	3500~3900 (350~390)	1900~2600 (152~208)	2072~3140 (165~250)	2.8~3.2 (22.3~25.5)	<=250	4.5~4.9
Y30	3800~4200 (380~420)	2000~2700 (160~216)	2072~3140 (165~250)	3.3~3.7 (26.3~29.5)	<=250	4.6~5.1
Y35	4000~4400 (400~440)	2200~2800 (176~224)	2512~2889 (200~230)	3.8~4.3 (30.3~33.4)	<=250	4.7~5.1
Y30BH	3800~4000 (380~400)	2800~3000 (224~240)	3077~3391 (245~270)	3.4~3.8 (27.1~30.3)	<=250	4.6~5.1

The Magnetic Property Table of Sinter NdFeB
Serial Number	Grade	Br Scope		Hcj (min)		Hcb (min)		(BH)max Scope		Highest Working Temperature
Serial Number	Grade	T	kGs	kA/m	kOe	kA/m	kOe	kJ/m³	MGOe	℃
1	N27	1.02～1.09	10.2～10.9	955	12	796	10	199～231	25～29	80
2	N30	1.08～1.15	10.8～11.5	955	12	796	10	223～255	28～32	80
3	N33	1.13～1.18	11.3～11.8	955	12	836	10.5	247～270	31～34	80
4	N35	1.17～1.22	11.7～12.2	955	12	868	10.9	263～287	33～36	80
5	N38	1.22～1.27	12.2～12.7	955	12	899	11.3	287～310	36～39	80
6	N40	1.25～1.30	12.5～13.0	955	12	923	11.6	302～326	38～41	80
7	N42	1.28～1.34	12.8～13.4	955	12	923	11.6	318～342	40～43	80
8	N45	1.33～1.38	13.3～13.8	955	12	876	11	342～366	43～46	80
9	N48	1.37～1.43	13.7～14.3	955	12	892	11.2	366～390	46～49	80
10	N50	1.39～1.45	13.9～14.5	876	11	836	10.5	374～406	47～51	80
11	N52	1.42～1.47	14.2～14.7	876	11	836	10.5	390～422	49～53	80
12	30M	1.08～1.15	10.8～11.5	1114	14	796	10	223～254	28～32	100
13	33M	1.13～1.18	11.3～11.8	1114	14	836	10.5	247～270	31～34	100
14	35M	1.17～1.22	11.7～12.2	1114	14	868	10.9	263～287	33～36	100
15	38M	1.22～1.27	12.2～12.7	1114	14	899	11.3	287～310	36～39	100
16	40M	1.25～1.30	12.5～13.0	1114	14	923	11.6	302～326	38～41	100
17	42M	1.28～1.34	12.8～13.4	1114	14	955	12	318～342	40～43	100
18	45M	1.33～1.38	13.3～13.8	1114	14	995	12.5	342～366	43～46	100
19	48M	1.37～1.43	13.7～14.3	1114	14	1019	12.8	358～390	46～49	100
20	50M	1.39～1.45	13.9～14.5	1114	13	1035	13	374～406	47～51	100
21	52M	1.42～1.47	14.2～14.7	1035	13	995	12.5	390～422	49～53	100
22	15H	0.81～0.96	8.10～9.60	1353	17	597	7.5	127～159	16～20	120
23	25H	0.90～1.08	9.00～10.8	1353	17	756	9.5	159～207	20～26	120
24	27H	1.02～1.06	10.2～10.6	1353	17	764	9.6	199～215	25～27	120
25	30H	1.08～1.15	10.8～11.5	1353	17	796	10	223～254	28～32	120
26	33H	1.13～1.18	11.3～11.8	1353	17	836	10.5	247～270	31～34	120
27	35H	1.17～1.22	11.7～12.2	1353	17	868	10.9	263～287	33～36	120
28	38H	1.22～1.27	12.2～12.7	1353	17	899	11.3	287～310	36～39	120
29	40H	1.25～1.30	12.5～13.0	1353	17	923	11.6	302～326	38～41	120
30	42H	1.28～1.34	12.8～13.4	1353	17	955	12	318～342	40～43	120
31	45H	1.33～1.38	13.1～13.8	1353	17	963	12.1	334～358	43～46	120
32	48H	1.37～1.43	13.7～14.3	1353	16	971	12.2	342～366	45～49	120
33	50H	1.39～1.45	13.9～14.5	1274	16	1035	13	374～406	47～51	120
34	27SH	1.02～1.06	10.2～10.6	1592	20	780	9.8	199～215	25～27	150
35	30SH	1.08～1.14	10.8～11.4	1592	20	804	10.1	223～254	28～32	150
36	33SH	1.13～1.18	11.3～11.8	1592	20	844	10.6	247～270	31～34	150
37	35SH	1.17～1.22	11.7～12.2	1592	20	876	11	263～287	33～36	150
38	38SH	1.22～1.27	12.2～12.7	1592	20	907	11.4	287～310	36～39	150
39	40SH	1.25～1.30	12.5～13.0	1592	20	939	11.8	302～326	38～41	150
40	42SH	1.28～1.34	12.8～13.4	1592	20	971	12.2	318～342	40～43	150
41	45SH	1.32～1.38	13.2～13.8	1592	19	995	12.3	342～366	43～46	150
42	48SH	1.36～1.42	13.6～14.2	1512	19	995	12.5	358～390	45～49	150
43	28UH	1.02～1.08	10.2～10.8	1990	25	764	9.6	207～231	26～29	180
44	30UH	1.08～1.14	10.8～11.4	1990	25	812	10.2	223～254	28～32	180
45	33UH	1.13～1.18	11.3～11.8	1990	25	852	10.7	247～270	31～34	180
46	35UH	1.17～1.22	11.7～12.2	1990	25	860	10.8	263～287	33～36	180
47	38UH	1.22～1.27	12.2～12.7	1990	25	876	11	287～310	36～39	180
48	40UH	1.26～1.30	12.6～13.0	1911	24	915	11.5	302～326	38～41	180
49	42UH	1.30～1.35	13.0～13.5	1911	24	971	12.2	310～342	39～43	180
50	28EH	1.04～1.09	10.4～10.9	2388	30	780	9.8	207～231	26～29	200
51	30EH	1.08～1.14	10.8～11.4	2388	30	812	10.2	223～254	28～32	200
52	33EH	1.13～1.18	11.3～11.8	2388	30	820	10.3	247～270	31～34	200
53	35EH	1.17～1.22	11.7～12.2	2388	30	836	10.5	263～287	33～36	200
54	38EH	1.22～1.27	12.2～12.7	2388	30	915	11.5	279～310	35～39	200
55	28AH	1.02～1.09	10.2～10.9	2706	34	780	9.8	199～231	25～29	240
56	30AH	1.07～1.13	10.7～11.3	2706	34	812	10.2	215～247	27～31	240
57	33AH	1.11～1.17	11.1～11.7	2706	34	820	10.5	239～271	30～34	240

Type of Magnetization

Maxwell

Former unit for the magnetic flux.

Oersted

Former unit for magnetic field strength.

Remanence Br

Remanence is the induction (flux density) remaining in a ferrous magnetic material after removal of the magnetizing field. The numerical value of the remanence applies as material constant for the case of the closed circle (H = 0) and is called true remanence (Br). In the opened magnetic circuit Br drops to the value of the apparent remanence Br.

Saturation Magnetizing

A magnetization, which can maximally be achieved by parallel alignment of all magnetic moments, is called saturation magnetization.

Sintered Magnet

Permanent magnet pressed from a mixture of magnetizable powders and hardened by heating in a vacuum.

Temperature Coefficient

Indicates the dependency of the magnetic material's characteristic data Br and BHc upon temperature. The temperature coefficients for Br, respectively BHc differ.

Tesla

Unit for the magnetic Flux.

1 Tesla (T)= 104 G = 1 Vs/m2

Weber

Unit for the magnetic Flux.

1 weber (Wb) = 1 Vs = 108 Maxwell

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