Ferrite Magnets

Introduction

1. Ferrite magnets are ceramic compounds of iron oxides, such as hematite (Fe₂O₃) or magnetite (Fe₃O₄), and other metal oxides.
2. Ceramic magnets are hard and brittle. According to magnetic properties, they can be classified into "soft” ones and "hard” ones. "Soft” magnets have small coercive force, while "hard” ones are featured by large coercive force.
3. Ferrites produced by us are mainly permanent magnetic ferrite. They are widely utilized in electronic industry, IT industry, automobile industry, etc.
4. Our ferrite magnets have passed ISO9001, ISO14001, GB/T28001 and SGS.

Shapes

1. Charcoal gray magnets are in shapes of discs, rings, blocks, cylinders, arcs, etc.
2. We also customize ceramic ferrites in various shapes according to customers’ requirements.
Choose Ceramic Magnet from Following Shapes

Square Ferrite Magnets

Disc Ferrite Magnets


Custom Ferrite Magnets

Features of Ceramic Magnet

They are featured by good temperature resistance, low production cost, large magnetic permeability and good magnetic performance. Besides, they are easy to achieve magnetic saturation.

Production Procedures of Ferrite Magnet

(1) Materials Preparing
(2) Pre-Heating
(3) Smashing
(4) Ball-Milling
(5) Making Powder
(6) Pressing
(7) Sintering
(8) Machining Ferrite Magnet
(9) Checking Ceramic Magnet
(10) Packaging

Surface Treatment

Polarities are marked with epoxy resin spraying.
Maintenance of Permanent Magnetic Ferrite
DO NOT place ferrite magnets in following environments to prevent them from rusting or reducing magnetic performance.
1. Acid or Alkali Liquor
2. Organic Solvent
3. Electrolyte
4. Water or Oil
5. Hydrogen
6. Active Gas like Chlorine, Ammonia and Oxynitride
7. Radiation or Radioactive Rays

Package and Delivery of Ceramic Magnet

1. They are packaged in cartons.
2. During transportation, handle the cargo with care. Besides, cargos should be protected from damage caused by shock and rain. They should be placed in ventilated, dry, no-erosion environment.

Specification of

Ferrite Magnet

Chinese Standard
Grade	Br		Hcb		Hcj		(BH) Max.
	mT	KG	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe
Y10T	200-235	2.0-2.35	125-160	1.57-2.01	210-280	2.64-3.52	6.5-9.5	0.8-1.2
Y20	320-380	3.2-3.8	135-190	1.70-2.38	140-195	1.76-2.45	18.0-22.0	2.3-2.8
Y22H	310-360	3.1-3.6	220-250	2.77-3.14	280-320	3.52-4.02	20.0-24.0	2.5-3.2
Y23	320-370	3.2-3.7	170-190	2.14-2.38	190-230	2.39-2.89	20.0-25.5	2.5-3.2
Y25	360-400	3.6-4.0	135-170	1.70-2.14	140-200	1.76-2.51	22.5-28.0	2.8-3.5
Y26H	360-390	3.6-3.9	220-250	2.77-3.14	225-255	2.83-3.21	23.0-28.0	2.9-3.5
Y27H	370-400	3.7-4.0	205-250	2.58-3.14	210-255	2.64-3.21	25.0-29.0	3.1-3.7
Y30	370-400	3.7-4.0	175-210	2.2-2.64	180-220	2.64-2.77	26.0-30.0	3.3-3.8
Y30BH	380-390	3.8-3.9	223-235	2.80-2.95	231-245	2.90-3.08	27.0-30.0	3.4-3.7
Y30-1	360-400	3.6-4.0	135-170	1.70-2.14	140-200	1.76-2.51	22.5-28.0	2.8-3.5
Y30BH-1	380-400	3.8-4.0	230-275	2.89-3.46	235-290	2.95-3.65	27.0-32.0	3.4-4.0
Y20-2	395-415	3.95-4.15	275-300	3.46-3.77	310-335	3.90-4.21	28.5-32.5	3.5-4.0
Y32	400-420	4.0-4.2	160-190	2.01-2.38	165-195	2.07-2.45	30.0-33.5	3.8-4.2
Y33	410-430	4.1-4.3	220-250	2.77-314	225-255	2.83-3.21	31.5-35.0	4.0-4.4
Y35	400-410	4.00-4.10	175-195	2.20-2.45	180-200	2.26-2.51	30.0-32.0	3.8-4.0

USA Standard
Material	Br		Hcb		Hcj		(BH) Max.
	mT	KG	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe
C1	230	2.3	148	1.86	258	3.5	8.36	1.05
C5	380	3.8	191	2.4	199	2.5	27	3.4
C7	340	3.4	258	3.23	318	4.00	21.9	2.75
C8(C8A)	385	3.85	235	2.95	242	3.05	27.8	3.5
C9	380	3.8	280	3.516	320	4.01	26.4	3.32
C10	400	4.0	288	3.617	280	3.51	30.4	3.82
C11	430	4.3	200	2.512	204	2.56	34.4	4.32

Europe Standard The Standard from International Electronics Committee (IEC404-8-1) O×100=Y10T=C1 × 300=Y30=C5 O×330=Y30 BH
Grade	Allowed Value (min/typical)
	Br		Hcb		BrHcj		(BH) Max.
	mT	KG	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe
HF8/22	200/220	2.00/2.20	125/140	1.57/1.76	220/230	2.76/2.89	6.5/6.8	0.8/1.1
HF20/19	320/333	3.20/3.33	170/190	2.14/2.39	190/200	2.39/2.51	>20.0/21.0	2.5/2.7
HF20/28	310/325	3.10/3.25	220/230	2.76/2.89	280/290	3.52/3.64	>20.0/21.0	2.5/2.7
HF22/30	350/365	3.5/3.65	255/265	3.20/3.33	290/300	3.64/3.77	>22.0/23.5	2.8/3.0
HF24/16	350/365	3.5/3.65	155/175	1.95/2.20	160/180	2.01/2.26	>24.0/25.5	3.0/3.2
HF24/23	360/370	3.5/3.65	220/230	2.76/2.89	230/240	2.89/3.01	>24.0/25.5	3.0/3.2
HF24/35	370/380	3.60/3.70	260/270	3.27/3.39	350/360	4.40/4.52	>24.0/25.5	3.0/3.2
HF26/16	370/380	3.70/3.80	155/175	1.95/2.20	160/180	2.01/2.26	>26.0/27.0	3.2/3.4
HF26/18	370/380	3.70/3.80	175/190	2.20/2.39	180/190	2.26/2.39	26.0/27.0	3.3/3.4
HF26/24	370/380	3.70/3.80	230/240	2.89/3.01	240/250	3.01/3.14	26.0/27.0	3.3/3.4
HF26/26	370/380	3.70/3.80	230/240	2.89/3.01	260/270	3.27/3.39	26.0/27.0	3.3/3.4
HF26/30	385/395	3.85/3.95	260/270