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Ferrite Magnets

Information

Ferrite is the most widely used permanent magnet material. It is manufactured by powder metallurgy. It is mainly divided into barium material (Ba) and strontium material (Sr), and is divided into two types: anisotropic and isotropic. , Is a permanent magnet material that is not easy to demagnetize and not easy to corrode. The maximum working temperature can reach 250 degrees Celsius. It is hard and brittle. It can be cut and processed by tools such as diamond sand, and it can be formed at one time with a mold that is just processed by alloy. Such products are widely used in permanent magnet motors (Motor) and speakers (Speaker) and other fields.

Features

●Is made by powder metallurgy

●Harder and brittle

●Not easy to demagnetize

●Good corrosion resistance

●Low price and rich resources

●Good temperature stability

●The most widely used perma-

-nent magnet

磁性能

Grade	Isotropic/Heterotropic	Remanence		Coercivity		Intrinsic coercivity		Maximum magnetic energy product
		Br	Br	bHc	bHc	iHc	iHc	(BH)	(BH)
		(mT)	(Gs)	(kA/m)	(Oe)	(kA/m)	(Oe)	max (KJ/m)	max (MGOe)
Y10	Isotropic	200-235	2,000-2,350	125-160	1,570-2,010	210-280	2,640-3,520	6.5-9.5	0.8-1.2
Y25	Anisotropic	360-400	3,600-4,000	135-170	1,700-2,140	140-200	1,760-2,510	22.5-28.0	2.8-3.5
Y30	Anisotropic	370-400	3,700-4,000	175-210	2,200-2,640	180-220	2,260-2,770	26.0-30.0	3.3-3.8
Y30BH	Anisotropic	380-400	3,800-4,000	230-275	2,890-3,460	235-290	2,950-3,650	27.0-32.5	3.4-4.1
Y33	Anisotropic	410-430	4,100-4,300	220-250	2,770-3,140	225-255	2,830-3,210	31.5-35.0	4.0-4.4
Y35	Anisotropic	400-420	4,000-4,200	160-190	2,010-2,380	165-195	2,070-2,450	30.0-33.5	3.8-4.2

Physical properties

Project	Unit	Parameter range
Curie temperature	℃	450
Maximum working temperature	℃	250
Hardness	Hv	480-580
Density	g/cm	4.8-4.9
Recovery permeability	rec	1.05-1.20
Saturation magnetization	kOe	10
Saturation magnetization	kA/m	800
Remanence temperature coefficient	%/	-0.2
Temperature coefficient of intrinsic coercivity	%/	0.3
Stretching strength	N/mm	<100
Transverse strength	N/mm	300