Item No.: Y28-Ferrite-4
Magnet Shape: arc,segment
Material: Hard Ferrite (Ceramic)
Composite: Fe2O3 (BaCo3 or SrO3), Fe3O4 (SrCo3, SiO2)
Type: anisotropic or isotropic
Style: Sintered Permanent Magnet
Grade(Chinese Stardard): Y28
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.7-4.0 KGs (mT): 370-400 mT
Intrinsic Coercivity Force (Hcj): 2.20-3.64 KOe 175-210 KA/m
Coercivity Force (Hcb): 2.26-2.76 KOe 180-220 KA/m
Energy Density (BH)max: 3.3-3.8 MGOe 26.0-30.0 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
Ferrite, also known as Ceramic, magnets were formulated in the 1950s by Phillips in Holland. The major raw material used to manufacture Ferrite magnets is very inexpensive - iron oxide, more commonly known as "rust"! Due to their low cost, they are the most commonly used permanent magnets even today.
A special form of fully dense sintered ferrite magnets is produced using a flexible binder for the ferrite powder. These materials are commonly referred to as "Flexible Magnets".
Key Benefits
•Inexpensive yet strong; a good balance between strength and affordability
•Does not demagnetize easily
•Can be magnetized with multiple poles if necessary.
•Does not rust
Key Challenges
•Hard and brittle.
•Properties degrade linearly with temperature. At 350°F, about 75% of room temperature magnetization is retained, and at 550°F, about 50% is retained.
