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Ferrite

Ferrite is an oxide-based engineering ceramic. It can have a fairly high density and a moderately high thermal conductivity among oxide-based engineering ceramics.

The properties of ferrite include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ferrite to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Compressive (Crushing) Strength

430 to 2000 MPa 62 to 290 x 103 psi

Elastic (Young's, Tensile) Modulus

120 to 140 GPa 18 to 20 x 106 psi

Flexural Strength

120 to 150 MPa 17 to 22 x 103 psi

Fracture Toughness

1.4 to 1.5 MPa-m1/2 1.3 x 103 psi-in1/2

Knoop Hardness

630 to 700

Tensile Strength: Ultimate (UTS)

48 to 71 MPa 7.0 to 10 x 103 psi

Thermal Properties

Specific Heat Capacity

710 to 1050 J/kg-K 0.17 to 0.25 BTU/lb-°F

Thermal Conductivity

3.9 to 6.3 W/m-K 2.2 to 3.6 BTU/h-ft-°F

Thermal Expansion

8.0 to 9.3 µm/m-K

Other Material Properties

Density

4.7 to 4.8 g/cm3 290 to 300 lb/ft3

Dielectric Constant (Relative Permittivity) At 1 MHz

12 to 270

Electrical Resistivity Order of Magnitude

1.0 to 1.5 10x Ω-m

Common Calculations

Stiffness to Weight: Axial

15 to 16 points

Stiffness to Weight: Bending

35 to 36 points

Strength to Weight: Axial

2.8 to 4.1 points

Strength to Weight: Bending

6.2 to 8.0 points

Thermal Diffusivity

0.78 to 1.9 m2/s

Thermal Shock Resistance

3.0 to 4.6 points

Followup Questions

Further Reading

Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005