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Limestone

Limestone is a type of common industrial natural stone. It has the highest tensile strength and the lowest thermal conductivity among natural stone materials. The graph bars on the material properties cards below compare limestone 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

700 MPa 100 x 103 psi

Elastic (Young's, Tensile) Modulus

77 GPa 11 x 106 psi

Poisson's Ratio

0.25

Shear Modulus

30 GPa 4.4 x 106 psi

Tensile Strength: Ultimate (UTS)

100 MPa 15 x 103 psi

Thermal Properties

Maximum Temperature: Mechanical

360 °C 670 °F

Specific Heat Capacity

920 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

2.1 W/m-K 1.2 BTU/h-ft-°F

Thermal Expansion

8.0 µm/m-K

Other Material Properties

Density

2.6 g/cm3 160 lb/ft3

Dielectric Strength (Breakdown Potential)

8.0 kV/mm 0.31 V/mil

Common Calculations

Stiffness to Weight: Axial

16 points

Stiffness to Weight: Bending

55 points

Strength to Weight: Axial

11 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

0.88 m2/s

Thermal Shock Resistance

12 points

Followup Questions

Further Reading

ASTM C242: Standard Terminology of Ceramic Whitewares and Related Products

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015