-Produce (sintering) by powder metallurgical method
-Chemical composition of Ba/SrO.6 Fe2O3
-Relatively brittle & hard
-Good resistance to demagnetization
-Excellent corrosion resistance
-Raw material is readily available & low in cost
-Good temperature stability
-Most widely used permanent magnets.
Original Manufacturer:HangSeng Magnetech / HSMAG / Ferritei
Solution:Customized you required ferrite material, grade, size, shape, grade, pull force and woking temperature
Origin:Ningbo, Zhejiang, China
Supply Ability:500000 pcs/day
Certification:SGS,TUV,ISO9001,ROHS,TS16949
Applications:motors, magnetic couplings, for sensing, loudspeakers, holding-magnet systems, crafts, magnetic therapy, novelties, and toys.
Detailed Product Description:
Item No.: Y20-Ferrite-4 Magnet Shape: bar, sticker, long block Material: Hard Ferrite (Ceramic) Composite: Fe2O3 (BaCo3 or SrO3), Fe3O4 (SrCo3, SiO2) Type: anisotropic or isotropic Style: Sintered Permanent Magnet Grade(China Stardard): Y20 Detailed magnetic properties data: Residual Magnetic Flux Density (Br): 3.2-3.8 KGs (mT): 320-380 mT Intrinsic Coercivity Force (Hcj): 1.70-2.38 KOe 135-190 KA/m Coercivity Force (Hcb): 1.76-2.45 KOe 280-320 KA/m Energy Density (BH)max: 2.0-2.8 MGOe 18.0-22.0 KJ/m³ Operating Temperature: -40 °C to +250 °C Magnetisation Direction: Axial / Radially magnetized Size Can be customized according to customer drawings: Tolerance: +/-2% mm Delivery time 7-25 days Specification of China manufacturer Y25 ceramic barium ferrite magnet : Ferrite or ceramic magnets are still the most widely used magnets with a maximum energy product of 1 to ± 4.3 MGOe. Due to the environmental requirements which are becoming more stringent barium ferrite has been replaced by strontium ferrite during the last years. Ferrite is the cheapest magnetic material and has a high corrosion resistance making coating unnecessary. This magnetic material is hard and fragile and must be processed with diamond, preferably when it is not in a magnetic state. Because it might shrink during the sinter process a tolerance of ± 2 % should be taken into account when determining the dimensions. If grinded ± 0.1 mm. Tighter tolerance is available on request. Ferrite magnets can be supplied both isotropically and anisotropically, they are used in the most divergent products such as loudspeakers, magnetrons, measuring devices, toys, engines, reed contacts etc. The maximum temperature of use is 225°C depending on the specification, dimensions and system design. For specifications: See the table below. The minimum dimension for block magnets is 2 x 2 x 2 mm, whereas the maximum dimension for this type is 270 x 90 x 25.4 mm. The minimum dimension for disc magnets is D 2 x 1 mm, whereas the maximum dimension for this type is D 156 x 25. The minimum dimension for ring magnets is D8 x 2.5 x 3 mm, whereas the maximum dimension for this type is D 256 x D* x 25 mm (* inside diameter in consultation).