Borosilicate Glass (Pyrex 7740) vs Glass-Ceramic (Zerodur zero-CTE)
Property comparison of Borosilicate Glass (Pyrex 7740) and Glass-Ceramic (Zerodur zero-CTE), both glass.
| Property | Borosilicate Glass (Pyrex 7740) | Glass-Ceramic (Zerodur zero-CTE) | Difference |
|---|---|---|---|
| Elastic modulus | 64,000 MPa | 91,000 MPa | +42% |
| Shear modulus | 27,000 MPa | 36,000 MPa | +33% |
| Poisson ratio | 0.2 | 0.24 | +20% |
| Density | 2,230 kg/m³ | 2,530 kg/m³ | +13% |
| Thermal conductivity | 1.2 W/m·K | 1.46 W/m·K | +22% |
| Specific heat | 830 J/kg·K | 800 J/kg·K | -4% |
| Coefficient of thermal expansion | 0.000003 1/K | 0 1/K | -99% |
Difference is Glass-Ceramic (Zerodur zero-CTE) relative to Borosilicate Glass (Pyrex 7740). 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
What else is in Engineering Database
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators