Aluminosilicate Glass (Corning 1723 type) vs Borosilicate Glass (Pyrex 7740)
Property comparison of Aluminosilicate Glass (Corning 1723 type) and Borosilicate Glass (Pyrex 7740), both glass.
| Property | Aluminosilicate Glass (Corning 1723 type) | Borosilicate Glass (Pyrex 7740) | Difference |
|---|---|---|---|
| Elastic modulus | 81,000 MPa | 64,000 MPa | -21% |
| Shear modulus | 33,000 MPa | 27,000 MPa | -18% |
| Poisson ratio | 0.23 | 0.2 | -13% |
| Density | 2,640 kg/m³ | 2,230 kg/m³ | -16% |
| Thermal conductivity | 1.05 W/m·K | 1.2 W/m·K | +14% |
| Specific heat | 800 J/kg·K | 830 J/kg·K | +4% |
| Coefficient of thermal expansion | 0.000005 1/K | 0.000003 1/K | -28% |
Difference is Borosilicate Glass (Pyrex 7740) 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
- ASTM
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