Ferrite Ceramic Magnets

Ceramic Magnets

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Ferrite Magnets, commonly called Ceramics, are the most widely used magnet materials in the world. Primarily made of Strontium (Sr) and Iron Oxide (Fe2O3), they are the least expensive permanent magnets today. Mostly used in Electric Motors and Loudspeakers.

Ferrite

Alliance Ferrite Grades Remanent Induction Coercive Force Intrinsic Coercive Force Maximum Energy Product Reversible Temperature Coefficients Continuous
Working Temp.
Br (Gauss) Hc (Oe) Hci (Oe) (BH)max (MGOe) α
Br
ß
Hci
Tw
(°C)
Min Max Min Max Min Max Min Max %/°C %/°C Max
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
C7 3,700 3,900 3,300 3,650 3,850 4,150 3.6 3.8 -0.20 0.35 350
C8 3,900 4,100 3,000 3,400 3,050 3,450 3.4 3.8 -0.20 0.35 350
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 4,350 4,650 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
Alliance Ferrite Grades Density Tensile Strength Modulus of Elasticity Thermal Expansion Coefficient /°C Electrical Resistivity Curie Temperature
g/cm3 lbs/in3 psi Pa
x 106
psi
x 106
Pa
x 106
ǁ
to M

to M
Ω-cm @ 20 C °C 
C0 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C1 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C4 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C4B 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C5 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C7 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C8 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C8H 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C8B 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C9H 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C9B 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C10 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C10H 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C11 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450
C12 4.90 0.177 5,000 34 26 180,000 14x10-6 10x10-6 100,000 450

Ferrite Grade Comparison

Ferrite Curve Comparisons

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