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Ferrite Magnets
 
 
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
¡÷Br/¡÷rB/T		 (%K) -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18 -0.18
[%¡æ] -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
[¡æ] 460 460 460 460 460 460 460 460
Hot inflated coefficient
¡÷L/L¡÷T		 C//*(1/K)
[1/¡æ]		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6		 (9~9.5)
¡Á10-6
C¡Í*(1/K)
[1/¡æ] 		10¡Á10-6 10¡Á10-6 10¡Á10-6 10¡Á10-6 10¡Á10-6 10¡Á10-6 10¡Á10-6 10¡Á10-6
Specific heat
 (J/Kg.K) 837 837 837 837 837 837 837 837
[Cal/g¡æ] 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Sinter density (Kg/m3) (4.85~5.0) ¡Á103 (4.85~5.0)
¡Á103		 (4.85~5.0) ¡Á103 (4.85~5.0) ¡Á103 (4.85~5.0) ¡Á103 (4.85~5.0) ¡Á103 (4.85~5.0)
¡Á103		 (4.85~5.0)
¡Á103
(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) ¡Á108

 (0.5~0.9)
¡Á108		 (0.5~0.9) ¡Á108 (0.5~0.9) ¡Á108 (0.5~0.9) ¡Á108 (0.5~0.9) ¡Á108 (0.5~0.9)
¡Á108		 (0.5~0.9)
¡Á108
(Kgf/mm2) 5~9 5~9 5~9 5~9 5~9 5~9 5~9 5~9
Compressed intensity (N/m2) £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108 £¾6.9¡Á108
(Kgf/mm2) £¾70 £¾70 £¾70 £¾70 £¾70 £¾70 £¾70 £¾70
Cut intensity (N/m2) (0.2~0.5) ¡Á108 (0.2~0.5)
¡Á108		 (0.2~0.5) ¡Á108 (0.2~0.5) ¡Á108 (0.2~0.5) ¡Á108 (0.2~0.5) ¡Á108 (0.2~0.5)
¡Á108		 (0.2~0.5)
¡Á108
(Kgf/mm2) 2~5 2~5 2~5 2~5 2~5 2~5 2~5 2~5
 
    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.
 
 

Contact Information
Ningbo Ketian Magnet Co,.Ltd

No.1 ChengXi(west) Road,
Cicheng Ningbo,
China 315034
Tel:086-0574- 87574058 (International), 87574888, 87574056, 87574145,87574063,87597567
Fax:086-0574- 87597123, 87574285
Web Site:http://www.ktmagnet.com
E-mail:sales@ktmagnet.com

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