Boron Carbide (B4C hot-pressed) vs Mullite (3Al2O3-2SiO2)
Property comparison of Boron Carbide (B4C hot-pressed) and Mullite (3Al2O3-2SiO2), both ceramic.
| Property | Boron Carbide (B4C hot-pressed) | Mullite (3Al2O3-2SiO2) | Difference |
|---|---|---|---|
| Elastic modulus | 450,000 MPa | 151,000 MPa | -66% |
| Shear modulus | 188,000 MPa | 59,000 MPa | -69% |
| Poisson ratio | 0.2 | 0.25 | +25% |
| Density | 2,510 kg/m³ | 2,800 kg/m³ | +12% |
| Thermal conductivity | 30 W/m·K | 6 W/m·K | -80% |
| Specific heat | 950 J/kg·K | 780 J/kg·K | -18% |
| Coefficient of thermal expansion | 0.000006 1/K | 0.000005 1/K | -4% |
Difference is Mullite (3Al2O3-2SiO2) relative to Boron Carbide (B4C 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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