Aluminosilicate Glass (Corning 1723 type) vs Glass-Ceramic (Zerodur zero-CTE)
Property comparison of Aluminosilicate Glass (Corning 1723 type) and Glass-Ceramic (Zerodur zero-CTE), both glass.
| Property | Aluminosilicate Glass (Corning 1723 type) | Glass-Ceramic (Zerodur zero-CTE) | Difference |
|---|---|---|---|
| Elastic modulus | 81,000 MPa | 91,000 MPa | +12% |
| Shear modulus | 33,000 MPa | 36,000 MPa | +9% |
| Poisson ratio | 0.23 | 0.24 | +4% |
| Density | 2,640 kg/m³ | 2,530 kg/m³ | -4% |
| Thermal conductivity | 1.05 W/m·K | 1.46 W/m·K | +39% |
| Specific heat | 800 J/kg·K | 800 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000005 1/K | 0 1/K | -100% |
Difference is Glass-Ceramic (Zerodur zero-CTE) relative to Aluminosilicate Glass (Corning 1723 type). 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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