Gold Member Since 2012
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Ningbo Hui Hesing Advanced Tech Material Co., Ltd.

Ceramic Cylinder Magnet, Permanent Cylinder Magnet, Hard Ferrite Magnet manufacturer / supplier in China, offering Strong Cylinder Ferrite Magnets with Small Holes, Small Size Neodymium Permanent Magnet Disc for Children Toys, Strong Small Disc Magnet for Children Toys, Craft and DIY and so on.

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Supplier Homepage Product Ceramic Magnet Strong Cylinder Ferrite Magnets with Small Holes

Strong Cylinder Ferrite Magnets with Small Holes

Purchase Qty.:
(Pieces)
1,000-1,999 2,000+
FOB Unit Price: US $0.01 US $0.008
Purchase Qty. (Pieces) FOB Unit Price
1,000-1,999 US $0.01
2,000+ US $0.008
Get Latest Price
Port: Ningbo, China
Production Capacity: 1000 Ton Per Month
Payment Terms: L/C, T/T, Western Union

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Product Catalog
Ferrite Magnets
20 Products
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Basic Info
  • Model NO.: Ferrite Magnet
  • Magnetocrystalline Anisotropy: Isotropic Magnet
  • Shape: Cylinder
  • Composition: Ferrite Magnet
  • Category: Sintered
  • Member Type: Gold Member
  • City: Ningbo
  • Transport Package: Standard Export Carton, Pallet
  • HS Code: 8505190090
  • Type: Permanent
  • Application: Speaker Magnet, Industrial Magnet, Motor Magnet
  • Coating: No
  • Grade: Y10, Y25, Y30, Y30bh, Y33, Y35
  • Business Type: Manufacturer/Factory
  • R&D Capacity: Owned Brand/OEM/ODM
  • Trademark: HHS MAG
  • Origin: China
Product Description

Strong cylinder ferrite magnets with small holes 
1.Introduction
Strong cylinder ferrite magnets with small holes are made of hard ferrites, which have a high coercivity and high remanence after magnetization. These are composed of iron oxide and barium or strontium carbonate. The high coercivity means the materials are very resistant to becoming demagnetized, an essential characteristic for a permanent magnet. They also conduct magnetic flux well and have a high magnetic permeability. 
 
2.Material:
Strontium ferrite, SrFe12O19 (SrO·6Fe2O3), a common material for permanent magnet applications.
Barium ferrite, BaFe12O19 (BaO·6Fe2O3), a common material for permanent magnet applications. Barium ferrites are robust ceramics that are generally stable to moisture and corrosion-resistant. They are used in e.g. subwoofer magnets and as a medium for magnetic recording, e.g. on magnetic stripe cards.
Cobalt ferrite, CoFe2O4 (CoO·Fe2O3), used in some media for magnetic recording.
 
3.Main features:
1.high working temperature
2.good corrosion resistance
3.high intrinsic coercive force
 
4.Parameter

Max. Operating Temperature

°c

250

Hardness

Hv

480-580

Density

g/cm3

4.8-4.9

Relative Recoil Permeability

μ rec

1.05-1.20

Saturation Field Strength

kOe

10

Temperature Coefficient of Br

kA/m

800

Temperature Coefficient of iHc

%/°c
%/°c

-0.2
0.3

Tensile Strength

N/mm²

<100

Transverse Rupture

N/mm²

300

  
5.Typical Properties:

Ferrite Typical Physical Properties of Chinese Standard

Item

Grade

Remanence:Br


Coercivity:bHc

Coercivity:iHc

Max Energy Product

Br(mT)

Br(Gs)

bHc(kA/m)

bHc(Oe)

iHc(kA/m)

iHc(Oe)

(BH)max(KJ/m3)

(BH)max(MGOe)

Y10

Isotropic

200-235

2000-2350

125-160

1570-2010

210-280

2640-3520

6.5-9.5

0.8-1.2

Y25

Anistropic

360-400

3600-4000

135-170

1700-2140

140-200

1760-2510

22.5-28.0

2.8-3.5

Y30

Anistropic

370-400

3700-4000

175-210

2200-2640

180-220

2260-2770

26.0-30.0

3.3-3.8

Y30BH

Anistropic 

380-400

3800-4000

230-275

2890-3460

235-290

2950-3650

27.0-32.5

3.4-4.1

Y33

Anistropic

410-430

4100-4300

220-250

2770-3140

225-255

2830-3210

31.5-35.0

4.0-4.4

Y35

Anistropic

400-420

4000-4200

160-190

2010-2380

165-195

2070-2450

30.0-33.5

3.8-4.2

 
6.Applications:
 
barium ferrite magnets are now widely applied in speaker, louderspeaker,Ferrite magnets have largely displaced Alnico magnets in these applications.It is a common magnetic material for electromagnetic instrument pickups.
 
7.Production Flow Diagram
Control of Incoming Goods→Iron Oxide&Barium or Strontium Carbonate →Mixing →Presintering-Calcining →Milling →Add Binder →Granulating →Pressing →Sintering →Grinding →Cleaning →Final Inspection →Magnetising →Finished Production 
 
 
8.kindly reminder
Dear customer,you know all of our product are customized. So in order to save your time, our quotation is based on your material, size,coating,magnetization direction and quantity. If you could send us drawing which shows the information in need, that will be better. 
 
 
 
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