# Zircon (Zirconium Silicate, ZrSiO_{4})

Zircon is an oxide-based engineering ceramic. It has a moderately high tensile strength and a moderately high density among oxide-based engineering ceramics. The graph bars on the material properties cards below compare zircon 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.

## Thermal Properties

Maximum Temperature: Mechanical

1650 *°C* 3000 *°F*

Thermal Conductivity

3.5 *W/m-K* 2.0 *BTU/h-ft-°F*

Thermal Expansion

5.0 *µm/m-K*

## Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz

8.8

Dielectric Strength (Breakdown Potential)

7.9 *kV/mm* 0.31 *V/mil*

## Other Material Properties

Density

3.9 *g/cm ^{3}* 240

*lb/ft*

^{3}Flexural Strength

450 *MPa* 65 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

290 *MPa* 42 *x 10 ^{3} psi*

## Common Calculations

Strength to Weight: Axial

21 *points*

Strength to Weight: Bending

25 *points*

## Followup Questions

## Further Reading

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