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China Ningbo Daxie Developing District Yinxin Magnetic Industry Co., Ltd. is specialized in producing, processing and developing the new technology in the field of NdFeB——the lastest products of permanent magnet, ferrite, ferrite magnet in the world. The company not only has the international first-class equipment and techniques, but also owns the perfectly combination of excellent business management and advanced technology, which made the company take the lead of the profession. We are professional manufacturer and factory in China. We can produce magnets, NdFeB Magnets, AlNiCo Magnets, SmCo Magnets, rubber magnets, rare earth magnet, ferrite, ferrite magnet, permanent magnets, magnet strip etc Magnetic materials, according to your requirements. More types of magnet wanted, please contact us right now!
ferrite, ferrite magnet
Ferrite magnets
 
The standards sizes of all hard ferrite shapes mean the sizes of finished products which undergo.Sintering and grinding processes. Owing to the factors such as sintering temperture,intrinsic materical,Features and process controlling,size tolerances between designed sizes and that of finished products ate allowed.The tolerances are listed in the following tables.
 
Ferrite magnets Properties

Material name Y30BH HF28/28 FB6H Y30H-1[C-8] Y30H-2 Y36 C-8B C-8C
Compound SrO6Fe2O3
Left magnet density Br [MT] >=380 >=385 >=390 >=385 >=400 >=410 >=420 >=430
[KG] >=3.8 >=3.85 >=3.9 >=3.85 >=4.0 >=4.1 >=4.2 >=4.3
Magnetic induction coercive force Hcb [KA/m] >=224 >=270 >=267 >=235 >=275 >=220 >=230 >=200
[Koe] >=2.8 >=3.4 >=3.3 >=2.95 >=3.45 >=2.76 >=2.8 >=2.5
Inner coercive force Hcj [KA/m] >=232 >=280 >=315 >=245 >=310 >=225 >=240 >=205
[Koe] >=2.9 >=3.5 >=3.9 >=3.07 >=3.89 >=2.85 >=3.0 >=2.5
Max magnet energy [BH]max [KJ/m3] >=27.25 >=28 >=29.8 >=30.02 >=31.6 >=31.6 >=32.5 >=34.2
[KGOe] >=3.1 >=3.5 >=3.7 >=3.8 >=4.0 >=4.0 >=4.1 >=4.3
Relative reversion magnet ratio urec 1.05~1.1 1.05~1.1 1.05~1.1 1.05~1.1 1.05~1.1 1.05~1.1 1.05~1.1 1.05~1.1
Left temperature coefficient
ΔBr/ΔrB/T
(%K) -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18
[%oC] -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18
Courier temperature
Tc
(K) 733 733 733 733 733 733 733 733
[oC] 460 460 460 460 460 460 460 460
Hot inflated coefficient
ΔL/LΔT
C//*(1/K)
[1/oC]
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
(9~9.5)
×10-6
C?*(1/K)
[1/oC]
10×10-6 10×10-6 10×10-6 10×10-6 10×10-6 10×10-6 10×10-6 10×10-6
Specific heat
(J/Kg.K) 837 837 837 837 837 837 837 837
[Cal/goC] 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Sinter density (Kg/m3) (4.85~5.0) ×103 (4.85~5.0)
×103
(4.85~5.0) ×103 (4.85~5.0) ×103 (4.85~5.0) ×103 (4.85~5.0) ×103 (4.85~5.0)
×103
(4.85~5.0)
×103
(g/m3) 4.85~5.0 4.85~5.0 4.85~5.0 4.85~5.0 4.85~5.0 4.85~5.0 4.85~5.0 4.85~5.0
Anti-fold intensity (N/m2)

(0.5~0.9) ×108

(0.5~0.9)
×108
(0.5~0.9) ×108 (0.5~0.9) ×108 (0.5~0.9) ×108 (0.5~0.9) ×108 (0.5~0.9)
×108
(0.5~0.9)
×108
(Kgf/mm2) 5~9 5~9 5~9 5~9 5~9 5~9 5~9 5~9
Compressed intensity (N/m2) >6.9×108 >6.9×108 >6.9×108 >6.9×108 >6.9×108 >6.9×108 >6.9×108 >6.9×108
(Kgf/mm2) >70 >70 >70 >70 >70 >70 >70 >70
Cut intensity (N/m2) (0.2~0.5) ×108 (0.2~0.5)
×108
(0.2~0.5) ×108 (0.2~0.5) ×108 (0.2~0.5) ×108 (0.2~0.5) ×108 (0.2~0.5)
×108
(0.2~0.5)
×108
(Kgf/mm2) 2~5 2~5 2~5 2~5 2~5 2~5 2~5 2~5
 
 
 


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