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Souwest Magnetech Ferrite Magnets

Ferrite magnets are permanent magnets in chinamade mainly from SrO or BaO and Fe2O3-- They are electrically insulating so current does not pass through them due to their extremely high electrical resistance, hence their other name of Ceramic Magnets. Compared with other permanent magnets, ferrite bar magnetsare hard and brittle, with lower magnetic energy. However, it is not easy to demagnetize and corrode, and the production process is simple and inexpensive. Therefore, ferrite disc magnetshave the highest production volume in the whole magnet industry and are widely used in other industries.

What Are The Differences Between Hard Magnets and Soft Magnets of Ferrite Magnets

Hard Magnets

The ferrite used in permanent magnets is hard ferrite, which has high coactivity and reminisces after magnetization. Iron oxide and barium carbonate or strontium carbonate are used to make hard ferrite. Because of their high coactivity, hard ferrites are not easily demagnetized, which is an important characteristic of permanent magnets. Hard ferrites can produce magnetic flux and also have a high magnetic permeability. Hard ferrites, also known as ceramic magnets, are inexpensive and are commonly used in household products (e.g. refrigerator magnets).

Soft Magnets

Ferrites used in transformers or electromagnet cores that include nickel; zinc or manganese compounds have a low coactivity and are generally referred to as soft ferrites. The low coactivity means that the magnetization strength of the material can be changed from positive to negative without consuming much energy (hysteresis), and the high resistivity of the material itself reduces another source of energy loss: the generation of eddy currents. Due to the low losses at high frequencies, it is commonly used in the cores of RF transformers and in the reactors used in switching power supplies.

Magnetic Properties of Ferrite Magnets

Standard of Ferrite Magnets

Material

Remanence

Coercivity

Intrinsic Coercivity

Br

Hcb

Hcj

(BH)max

MT

KG

KA/m

KOe

KA/m

KOe

KJ/m3

MGOe

C1

230

148

258

C5

380

191

199

27

C7

340

258

318

4

C8A

385

235

242

C8B

420

232

236

C9

380

280

320

C10

400

4

288

280

C11

430

200

204

Special Ferrite Segment Magnetic Properties Table

Grade

Mag Spring

MS Y30

MS Y35H-1

MS Y35H-2

MS Y35H-3

MS Y35H-4H

MMPA

C8

C8D

C8B

TDK

FB4B

FB4D

FB4G

Br

Type

395(3950)

405(4050)

400(4000)

415(4150)

380(3800)

mT(Gs)

min

385(3850)

395(3950)

390(3900)

405(4050)

370(3700)

Hcb

Type

200(2500)

255(3200)

279(3500)

235(2950)

286(3600)

KA/m(Oe)

min

176(2200)

251(3150)

236(3300)

223(2800)

270(3400)

Hcj

Type

205(2570)

263(3300)

287(3600)

243(3050)

342(4300)

KA/m(Oe)

min

184(2300)

255(3200)

275(3450)

231(2900)

326(4100)

(BH)max

Type

KJ/m 3

(MGOe)

min

Grade

Mag spring

MS Y38B

MS Y38H

MS Y40E

MS Y40B

MS Y45E

MS Y45B

MMPA

C12

C9

TDK

FB5B

FB5H

FB6E

FB6B

FB9H

FB6N

Br

Type

420(4200)

405(4050)

380(3800)

420(4200)

430(4300)

440(4400)

mT(Gs)

min

410(4100)

395(3950)

370(3700)

410(4100)

420(4200)

430(4300)

Hcb

Type

263(3300)

298(3750)

290(3650)

302(3800)

330(4150)

259(3250)

KA/m(Oe)

min

251(3150)

287(3600)

279(3500)

290(3650)

318(4000)

247(3100)

Hcj

Type

267(3350)

322(4050)

398(5000)

318(4000)

398(5000)

263(3300)

KA/m(Oe)

min

255(3200)

311(3900)

382(4800)

307(3850)

386(4850)

251(3150)

(BH)max

Type

KJ/m 3

(MGOe)

min

FAQs About Ferrite Magnets

What are ferrite magnets used for?

Hard ferrites are used to make permanent magnets such as refrigerator magnets, speakers and small electric motors. Soft ferrites have low interactivity, so they easily change magnetization, acting as conductors of magnetic fields.

Are ferrite magnets safe?

Magnets are incredibly useful and fun, but they also have danger. Ferrite magnets can shatter into pieces if you apply force repeatedly. Fragments of the broken magnet may cause injury to the user or stand.

How do you cut a ferrite magnet?

Ferrite cannot be cut with ordinary tools. However, it is possible to use the heating ring cutting method. Specifically, a resistance wire is used to form a ring at the prepared cutting point to form a large temperature difference through a large current and then quickly cooled.

Now the ferrite magnet priceis reasonable, if you have needs, please contact us.

If you want to know more applications of magnetic materials, please visit our website.



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