Hexagonal Boron Nitride (h-BN hot-pressed) vs Mullite (3Al2O3-2SiO2)
Property comparison of Hexagonal Boron Nitride (h-BN hot-pressed) and Mullite (3Al2O3-2SiO2), both ceramic.
| Property | Hexagonal Boron Nitride (h-BN hot-pressed) | Mullite (3Al2O3-2SiO2) | Difference |
|---|---|---|---|
| Elastic modulus | 73,800 MPa | 151,000 MPa | +105% |
| Shear modulus | 31,000 MPa | 59,000 MPa | +90% |
| Poisson ratio | 0.24 | 0.25 | +4% |
| Density | 1,900 kg/m³ | 2,800 kg/m³ | +47% |
| Thermal conductivity | 33 W/m·K | 6 W/m·K | -82% |
| Specific heat | 1,610 J/kg·K | 780 J/kg·K | -52% |
| Coefficient of thermal expansion | 0.000003 1/K | 0.000005 1/K | +74% |
Difference is Mullite (3Al2O3-2SiO2) relative to Hexagonal Boron Nitride (h-BN hot-pressed). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
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