Strong N52 Cylinder Ferrite Magnets NdFeB Magnet with Small Holes

• Type: Permanent
• Magnetocrystalline Anisotropy: Isotropic Magnet
• Application: Speaker Magnet, Industrial Magnet, Motor Magnet
• Shape: Cylinder
• Coating: No
• Composition: Ferrite Magnet
• Model NO.: Ferrite Magnet
• Grade: Y10, Y25, Y30, Y30bh, Y33, Y35
• Category: Sintered
• Business Type: Manufacturer/Factory
• Member Type: Gold Member
• R&D Capacity: Owned Brand/OEM/ODM
• City: Ningbo
• Transport Package: Standard Export Carton, Pallet
• Trademark: HHS MAG
• Origin: China
• HS Code: 8505190090
• Production Capacity: 500 Ton Per Month

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. 
 
 Company Information:
Established in 1998 with 320 staff members and a registered capital of $1.5 million, Ningbo Hui Hesing Advanced-tech Material Co. Ltd is specialized in manufacturing and selling all kinds of permanent magnetic products. Our products are exported to North and South America, Western Europe, Australia, and Africa, and we have an annual sales volume exceeding $9.6 million. Our target customers are import traders and wholesalers. Some big names have been cooperating with us for over eight years. Our two major advantages over our competitors are that we own raw material factories, and we are located very close to the port for ease of transportation and trading. As such, our prices are competitively priced compared to those of other suppliers. We're also an ISO 9001:2000-certified manufacturer and able to produce up to 1,000 tons of DfES magnets, 8,000 tons of ferrite magnets and over 10 million magnetic assemblies annually

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