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 mm2/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