# Granite

Granite is a type of common industrial natural stone. It has the highest thermal conductivity among the natural stone materials in the database. The graph bars on the material properties cards below compare granite to other natural stone materials (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

2200 *MPa* 320 *x 10 ^{3} psi*

Elastic (Young's, Tensile) Modulus

70 *GPa* 10 *x 10 ^{6} psi*

Flexural Strength

24 *MPa* 3.5 *x 10 ^{3} psi*

Poisson's Ratio

0.25

Shear Modulus

27 *GPa* 3.9 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

39 *MPa* 5.7 *x 10 ^{3} psi*

## Thermal Properties

Maximum Temperature: Mechanical

350 *°C* 660 *°F*

Specific Heat Capacity

840 *J/kg-K* 0.2 *BTU/lb-°F*

Thermal Conductivity

48 *W/m-K* 28 *BTU/h-ft-°F*

Thermal Expansion

7.4 *µm/m-K*

## Other Material Properties

Density

2.9 *g/cm ^{3}* 180

*lb/ft*

^{3}Dielectric Strength (Breakdown Potential)

8.5 *kV/mm* 0.33 *V/mil*

## Common Calculations

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

48 *points*

Strength to Weight: Axial

3.8 *points*

Strength to Weight: Bending

9.0 *points*

Thermal Diffusivity

20 *m ^{2}/s*

Thermal Shock Resistance

5.4 *points*