Fused Silica / Fused Quartz (Type 1) vs Glass-Ceramic (Zerodur zero-CTE)
Property comparison of Fused Silica / Fused Quartz (Type 1) and Glass-Ceramic (Zerodur zero-CTE), both glass.
| Property | Fused Silica / Fused Quartz (Type 1) | Glass-Ceramic (Zerodur zero-CTE) | Difference |
|---|---|---|---|
| Elastic modulus | 73,000 MPa | 91,000 MPa | +25% |
| Shear modulus | 31,000 MPa | 36,000 MPa | +16% |
| Poisson ratio | 0.17 | 0.24 | +41% |
| Density | 2,200 kg/m³ | 2,530 kg/m³ | +15% |
| Thermal conductivity | 1.38 W/m·K | 1.46 W/m·K | +6% |
| Specific heat | 703 J/kg·K | 800 J/kg·K | +14% |
| Coefficient of thermal expansion | 0.000001 1/K | 0 1/K | -96% |
Difference is Glass-Ceramic (Zerodur zero-CTE) relative to Fused Silica / Fused Quartz (Type 1). 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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