Ceramic Ferrite Magnet Grades
Ceramic Ferrite Magnets are composed of Strontium (Sr) and Iron Oxide (Fe2O3). C5 and C8 are the most common Ceramic Ferrite Magnet grades. Hard Ferrite magnets are resistant to corrosion and demagnetization with a maximum working temperature up to 350C.
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Ferrite | Br (Gauss) | Hc (Oe) | Hci (Oe) | (BH)max (MGOe) | Reversible Temperature Coefficients Br%/°C | Reversible Temperature Coefficients Hcj%/°C | Continuous Working Temp. Max °C | BH Curve |
C0 | 2,100 – 2,300 | 1,600 – 2,000 | 2,650 – 2,950 | 0.7 – 1.1 | -0.20 | 0.35 | 350 | |
C1 | 2,250 – 2,450 | 1,750 – 2,050 | 3,100 – 3,400 | 0.9 – 2.0 | -0.20 | 0.35 | 350 | |
C4 | 3,200 – 3,400 | 1,700 – 2,100 | 1,750 – 2,150 | 2.3 – 2.7 | -0.20 | 0.35 | 350 | |
C4B | 3,800 – 4,000 | 1,800 – 2,200 | 1,850 – 2,250 | 3.0 – 3.4 | -0.20 | 0.35 | 350 | |
C5 | 3,800 – 4,050 | 2,200 – 2,600 | 2,250 – 2,650 | 3.2 – 3.6 | -0.20 | 0.35 | 350 | BH Curve |
C7 | 3,700 – 3,900 | 3,300 – 3,650 | 3,850 – 4,150 | 3.6 – 3.8 | -0.20 | 0.35 | 350 | BH Curve |
C8 | 3,900 – 4,100 | 3,000 – 3,400 | 3,050 – 3,450 | 3.4 – 3.8 | -0.20 | 0.35 | 350 | BH Curve |
C8H | 3,700 – 3,900 | 3,500 – 3,800 | 4,800 – 5,100 | 3.2 – 3.6 | -0.20 | 0.35 | 350 | |
C8B | 3,950 – 4,150 | 3,300 – 3,650 | 3,500 – 3,800 | 3.6 – 4.0 | -0.20 | 0.35 | 350 | |
C9H | 3,900 – 4,100 | 3,670 – 3,970 | 4350 – 4650 | 4.0 – 4.4 | -0.20 | 0.35 | 350 | |
C9B | 4,300 – 4,500 | 3,100 – 3,400 | 3,150 – 3,450 | 4.4 – 4.8 | -0.20 | 0.35 | 350 | |
C10 | 4,000 – 4,200 | 2,700- 3,000 | 2,750 – 3,050 | 3.7 – 4.1 | -0.20 | 0.35 | 350 | |
C10H | 4,100 – 4,300 | 3,550 – 3,850 | 3,850 – 4,150 | 4.0 – 4.4 | -0.20 | 0.35 | 350 | |
C11 | 4,200 – 4,400 | 4,020 – 4,320 | 4,850 – 5.150 | 4.2 – 4.6 | -0.20 | 0.35 | 350 | |
C12 | 4,500 – 4,700 | 3,200 – 3,500 | 3,450 – 3,750 | 4.8 – 5.2 | -0.20 | 0.35 | 350 |