High-Alumina Firebrick (60-70% Al2O3) vs Hafnium (Hf pure >99.9%)
Property comparison of High-Alumina Firebrick (60-70% Al2O3) and Hafnium (Hf pure >99.9%), both refractory.
| Property | High-Alumina Firebrick (60-70% Al2O3) | Hafnium (Hf pure >99.9%) | Difference |
|---|---|---|---|
| Elastic modulus | 50,000 MPa | 78,000 MPa | +56% |
| Poisson ratio | 0.25 | 0.37 | +48% |
| Density | 2,600 kg/m³ | 13,310 kg/m³ | +412% |
| Thermal conductivity | 1.8 W/m·K | 23 W/m·K | +1178% |
| Specific heat | 880 J/kg·K | 144 J/kg·K | -84% |
| Coefficient of thermal expansion | 0.000006 1/K | 0.000006 1/K | +7% |
Difference is Hafnium (Hf pure >99.9%) relative to High-Alumina Firebrick (60-70% Al2O3). 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
- grade
- —
- heat treatment
- —
- standard
- CRC Handbook of Chemistry and Physics 103rd Ed.
- grade
- R02040
- heat treatment
- annealed
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