FERRITE

Item	Unit	Isotropic	Anisotropic by Dry	Anisotropic by Wet
Compositon	—	BaO•6Fe2O3	SrO•6Fe2O3	SrO•6Fe2O3
Molding Process	—	Dry Powder	Dry Powder in Magnetic Field	Wet Powder in Magnetic Field
Residual Flux Density Br	mT	≥200	310 to 360	380 to 400
	kG	≥2.0	3.1 to 3.6	3.8 to 4.0
Coercive Force bHc	kA/m	127 to 159	220 to 250	222 to 238
	KOe	1.6 to 2.0	2.8 to 3.2	2.8 to 3.0
Intrinsic Coercive Force iHc	kA/m	135 to 167	280 to 320	230 to 246
	KOe	1.7 to 2.1	3.5 to 4.0	2.9 to 3.1
Maximum Energy Product (BH) max	kJ/m2	6.3 to 9.5	20 to 24	27 to 30
	MGOe	0.8 to 1.2	2.5 to 3.0	3.4 to 3.8
Temperature Coefficent Br	%/K	-0.18	-0.18	-0.18
Temperature Coefficent iHc	%/K	0.22	0.27 to 0.42	0.27 to 0.42
Curie Point Tc	K	723	733	733
	°C	450	460	460
Recoil Relative Magnetic Permeability μrec	—	1.1 to 1.2	1.1 to 1.2	1.05 to 1.1
Density	g/cm2	4.8	4.9	4.9
Deflecting Strength	Mpa	29 to 68	49 to 88	49 to 88
	Kgf/mm2	3 to 7	5 to 9	5 to 9
Compression Strength	MPa	>686	>686	>686
	Kgf/mm2	>70	>70	>70
Tensile Strength	MPa	19 to 49	19 to 49	19 to 49
	Kgf/mm2	2 to 5	2 to 5	2 to 5
Specific Heat	J/ (Kg•K)	0.84x103	0.84x103	0.84x103
	cal/g•°C	0.2	0.2	0.2
Vickers Hardness	HV	530	530	530
Thermal Expansion Coefficient Lateral	ppm/K	9.9	11	13
Thermal Expansion Coefficient Vertical	ppm/K	9.9	9	8
JIS	—	MPB-8/15D	MPS-24/24D	MPS-31/24W
MMPA	—	CERAMIC-1	CERAMIC-6	CERAMIC-8
Magnetic Field To Be Charged For Magnetization	kA/m	800	800	800
	KOe	10	10	10
Electric Resistance	nΩ•m	>102	>102	>102