Ferrite Magnet Toroid Strontium (Sr) ferrite arc magnet has high curie temperature, strong anti-oxidation, big resistivity and strong c-oercive force. Arc magnet is mainly used for following motor: D.C motor Auto motor: rain scraper motor, cooling fan motor, window glasses lifting motor, automatic antenna motor, do-or lock control motor, steamer motor ect. Motorcycle motor: start motor and magnetic motor Frequency transducer motor: air condition motor, fridge c-ompressor motor, automatic washer motor Home appliance motor: home health device, electric equipment in kitche-n, electric fan and electric power toy. Material feature Desingnation of Material Br(mT) Hcb(KA/m) Hcj(KA/m) [BH]m(KJ/m³) International relevant norm & standards Desingnation of Material Br(mT) Hcb(KA/m) Hcj(KA/m) [BH]m(KJ/m³) International relevant norm & standards Y8T 210-235 140-220 220-280 7.0-12.0 IEC-7/21 Y23 330-355 220-250 250-280 20.0-26.0 IEC-20/19 Y26H 365-385 235-255 240-265 23.5-28.0 TDK-FB3X Y27 340-360 260-295 310-370 22.0-25.5 Y28 390-400 235-245 240-260 26.5-30.0 IEC-26/18 Y30H-1A 392-400 270-290 275-300 28.0-31.0 Y30H-1B 390-400 255-270 260-290 27.5-30.0 Y30H-2 395-415 275-300 310-335 28.5-32.0 TDK-FB5H Y33 410-430 220-250 225-255 31.5-35.0 TDK-FB4X Y34A 400-410 245-265 250-275 30.0-35.0 Y34B 395-400 255-275 260-285 39.0-34.0