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Zhu Zhou Summit Materials Co., Ltd.

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Sintered Ferrite Permanent Magnets

FOB Price: 0.30 - 0.35 USD/Piece
Supply Ability: 100,000 Piece/Pieces per Month
Shipping: Delivery time 7-10 Working days
Payment Terms: L/C
In Stock

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Packaging Details: According to Customers'requirement

Quick Details

  • Shape: Various
  • Composite: Ferrite Magnet
  • Type: Permanent
  • Packaging Details: According to Customers
  • Type: Permanent
  • Composite: Ferrite


Product detail

Sintered Ferrite (Hard ferrite magnets) were developed in the 1960s as a low cost alternative to metallic magnets. Even though they exhibit low energy (compared with other permanent magnet materials) and are relatively brittle and hard, Ceramic Magnets (Hard ferrite magnets) have won wide acceptance due to their good resistance to demagnetization, excellent corrosion resistance and low price per pound. In fact, measured by weight, ferrite represents more than 75 percent of the world magnet consumption. It is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and automotive sensors.

Besides industrial application, Ceramic Magnets (Hard ferrite magnets) are widely use in Educational area.

Ferrite magnets are manufactured by pressing, sintering, or injection molding. These magnets can be both anisotropic and isotropic. Anisotropic grades are oriented in the manufacturing direction and must be magnetized in the direction of orientation. Isotropic grades are not oriented and can be magnetized in any direction.

Physical property of hard ferrite magnets

Typical Physical Properties
Curie Temperature (°C) 450
Maximum Operating Temperature (°C) 250
Hardness (Hv) 480-580
Density (g/cm3) 4.8 - 4.9
Relative Recoil Permeability (μrec) 1.05 - 1.20
Saturation Field Strength, kOe (kA/m) 10 (800)
Temperature Coefficient of Br (%/°C) -0.2
Temperature Coefficient of iHc (%/°C) 0.3
Tensile Strength (N/mm) <100
Transverse Rupture Strength (N/mm) 300

Mostly Used national standard - SJ285-77 permanent ferrite magnet standard

Grade Br Hcb Hcj BHmax
kGs mT kOe kA/m kOe kA/m KJ/m3 MGOe
Y10T(=C1) 2.00/2.18 200/218 1.57/1.82 125/145 2.64/3.14 210/250 6.5/8.0 0.8/1.0
Y25 3.60/3.70 360/370 1.70/1.88 135/150 1.76/2.14 140/170 22.5/25.3 2.8/3.2
Y30(=C5) 3.80/3.85 380/385 2.40/2.64 191/210 2.50/2.51 199/220 26.0/28 3.4/3.7
Y30BH 3.80/3.90 380/390 2.80/2.95 223/235 2.90/3.08 231/245 27.0/30.0 3.4/3.7
Y33 4.10/4.20 410/420 2.77/2.95 220/235 2.83/3.01 225/240 31.5/33.0 4.0/4.2
Y35 4.00/4.10 400/410 2.20/2.45 175/195 2.26/2.51 180/200 30.0/32.0 3.8/4.0
C8(=C8A) 3.85/3.90 385/390 2.95/3.20 235/255 3.05/3.33 242/265 27.8/30.0 3.5/3.7
C10 4.00/4.10 400/410 3.62/3.77 288/300 3.51/3.60 280/287 30.4/31.9 3.8/4.0

Delivery time

7-10 Working days

Service Process

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