Limestone vs. Hexagonal Boron Nitride
Limestone belongs to the natural stone classification, while hexagonal boron nitride belongs to the non-oxide engineering ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is limestone and the bottom bar is hexagonal boron nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 700 | |
| 21 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 77 | |
| 14 to 60 |
| Poisson's Ratio | 0.25 | |
| 0.11 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 360 | |
| 1030 to 2350 |
| Specific Heat Capacity, J/kg-K | 920 | |
| 840 to 1610 |
| Thermal Conductivity, W/m-K | 2.1 | |
| 29 to 96 |
| Thermal Expansion, µm/m-K | 8.0 | |
| 0.54 to 18 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 8.0 | |
| 61 to 200 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.6 | |
| 1.9 to 2.1 |
Common Calculations
| Stiffness to Weight: Axial, points | 16 | |
| 4.1 to 18 |
| Stiffness to Weight: Bending, points | 55 | |
| 42 to 69 |
| Thermal Diffusivity, mm2/s | 0.88 | |
| 9.9 to 34 |