Silicon Nitride (Si3N4 HPSN) vs Spinel (MgAl2O4 transparent polycrystalline)
Property comparison of Silicon Nitride (Si3N4 HPSN) and Spinel (MgAl2O4 transparent polycrystalline), both ceramic.
| Property | Silicon Nitride (Si3N4 HPSN) | Spinel (MgAl2O4 transparent polycrystalline) | Difference |
|---|---|---|---|
| Poisson ratio | 0.27 | 0.26 | -4% |
| Density | 3,250 kg/m³ | 3,580 kg/m³ | +10% |
| Thermal conductivity | 29 W/m·K | 14.6 W/m·K | -50% |
| Specific heat | 720 J/kg·K | 800 J/kg·K | +11% |
| Coefficient of thermal expansion | 0.000003 1/K | 0.000008 1/K | +142% |
Difference is Spinel (MgAl2O4 transparent polycrystalline) relative to Silicon Nitride (Si3N4 HPSN). 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
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