Silicon Nitride (Si3N4 HPSN) vs Steatite (MgO-SiO2 ceramic)
Property comparison of Silicon Nitride (Si3N4 HPSN) and Steatite (MgO-SiO2 ceramic), both ceramic.
| Property | Silicon Nitride (Si3N4 HPSN) | Steatite (MgO-SiO2 ceramic) | Difference |
|---|---|---|---|
| Elastic modulus | 300,000 MPa | 105,000 MPa | -65% |
| Shear modulus | 120,000 MPa | 42,000 MPa | -65% |
| Poisson ratio | 0.27 | 0.25 | -7% |
| Density | 3,250 kg/m³ | 2,700 kg/m³ | -17% |
| Thermal conductivity | 29 W/m·K | 2.5 W/m·K | -91% |
| Specific heat | 720 J/kg·K | 870 J/kg·K | +21% |
| Coefficient of thermal expansion | 0.000003 1/K | 0.000008 1/K | +142% |
Difference is Steatite (MgO-SiO2 ceramic) 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
- DIN
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