Made from iron oxide,SrCO3, (or BaCO3) and other additives,having a relatively low Recoil permeability,results in highly resistant to an extemal magnetic fields,moreover,it's Low in costs.and widely used in motors, generators, electroacoustics, separators, holding System, telecom-munication system and etc.

PERMANENT ferrite magnet industry standard of USA

Model\Property	Br(mt)	Hcb(Ka/m)	HCL(KA/M)	(BH)max(KJ/m3)	density（g/m3)
C1	230	148	258	8.36	4.8
C5	380	191	199	27	4.8
C7	370±10	270±10	318±10	26.1±0.8	4.8
C8A	390±10	231±8	235±8	28.7±8	4.8
C8B	410±10	231±8	235±8	32.6±0.8	4.9
C9	380±10	279±8	318±8	26.2±0.8	4.8
C10	400±10	267±8	279±8	30.3±0.8	4.9
C11	420±10	223±8	227±8	24.2±0.8	4.9
C12	400±10	290±8	318±8	32.0±0.8	4.9

SJ/T10410-2000 permanent ferrite magnet standard

Model (Grade)	Br		Hcb		Hcj		(BH)max
	mT	Gs	KA/m	Oe	KA/m	Oe	KJ/m3	MGOe
Y8T	200-235	≥2000	125-160	≥1570	210-280	≥2610	6.59.5	≥0.8
Y22H	310-360	≥3100	220-250	≥2770	280--320	≥3520	20.0-24.0	≥ 2.5
Y25	360-400	≥ 3600	135-170	≥1700	140-200	≥1760	22.5-28.0	≥2.8
Y26H-1	360-390	≥3600	200-250	≥2512	225-255	≥ 2830	23.0-28.0	≥2.9
Y26H-2	360-380	≥3600	263-288	≥3300	318-350	≥4000	24.0-28.0	≥3.0
Y27H	350-380	≥3500	225-240	≥2830	235-260	≥ 2950	25.0-29.0	≥3.1
Y28	370-400	≥ 3700	175-210	≥2200	180-220	≥2260	26.0-30.0	≥3.3
Y28H-1	380-400	≥3800	240-260	≥3020	250-280	≥3140	27.0-30.0	≥3.1
Y28H-2	360-380	≥3600	271-295	≥3400	382-405	≥1800	26.0-30.0	≥3.3
Y30H-1	380-400	≥3800	230-275	≥ 2890	235-290	≥2950	27.0-32.5	≥3.4
Y30H-2	395-415	≥3950	224-240	≥3460	310-335	≥3900	27.0-32.0	≥3.4
Y32	400-420	≥4000	160-190	≥2010	165-195	≥2070	30.0-33.5	≥3.8
Y32H-1	400-420	≥ 4000	190-230	≥2390	230-250	≥2890	34.5-35.0	≥1.0
Y32H-2	400-440	≥4000	224-240	≥2810	230-250	≥2890	31.0-34.0	≥3.9
Y33	410-430	≥4100	220-250	≥2760	225-255	≥2830	31.5-35.0	≥ 4.0
Y33H	410-430	≥4100	250-270	≥3140	250-275	≥3140	31.5-35.0	≥4.0
Y34	420-440	≥ 4200	200-230	≥2510	205-235	≥2580	32.5-36.0	≥4.1
Y35	430-450	≥4300	215-239	≥2700	217-241	≥2730	33.1-33.2	≥4.2
Y36	440-450	≥4400	247-271	≥3100	250-374	≥4400	35.1-38.3	≥4.4
Y38	440-460	≥4400	285-305	≥3580	294-310	≥3690	36.6-40.6	≥ 4.6
Y40	450-460	≥ 4500	330-354	≥ 4150	340-360	≥1270	37.6-41.8	≥4.7

Physical and Mechanical Properties

Name	Mark	Unit	Value	Note
Recoil Permeability	μ rec	-	1.05-1.3
Curie temperature	Tc	℃	460
The coefficient of demagnetization to temperature	α Br	/℃	-0.2%	in 0-100℃
The coefficient of demagnetization to temperature	α HCJ	/℃	0.2%-0.5%	in 0-100℃
Density	D	g/cm3	4.5-5.1
Resistivity	ρ	Ω .cm	≥10000
The coefficient of linear expansion	αR	/℃	7-0.000015
Hardness	HV	-	480-580