Boron Carbide (B4C hot-pressed) vs Hexagonal Boron Nitride (h-BN hot-pressed)
Property comparison of Boron Carbide (B4C hot-pressed) and Hexagonal Boron Nitride (h-BN hot-pressed), both ceramic.
| Property | Boron Carbide (B4C hot-pressed) | Hexagonal Boron Nitride (h-BN hot-pressed) | Difference |
|---|---|---|---|
| Elastic modulus | 450,000 MPa | 73,800 MPa | -84% |
| Shear modulus | 188,000 MPa | 31,000 MPa | -84% |
| Poisson ratio | 0.2 | 0.24 | +20% |
| Density | 2,510 kg/m³ | 1,900 kg/m³ | -24% |
| Thermal conductivity | 30 W/m·K | 33 W/m·K | +10% |
| Specific heat | 950 J/kg·K | 1,610 J/kg·K | +69% |
| Coefficient of thermal expansion | 0.000006 1/K | 0.000003 1/K | -45% |
Difference is Hexagonal Boron Nitride (h-BN hot-pressed) 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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