Lead Glass (Crystal Glass ~24% PbO) vs Soda-Lime Glass (Tempered)
Property comparison of Lead Glass (Crystal Glass ~24% PbO) and Soda-Lime Glass (Tempered), both glass.
| Property | Lead Glass (Crystal Glass ~24% PbO) | Soda-Lime Glass (Tempered) | Difference |
|---|---|---|---|
| Elastic modulus | 58,000 MPa | 70,000 MPa | +21% |
| Shear modulus | 23,000 MPa | 29,000 MPa | +26% |
| Poisson ratio | 0.22 | 0.23 | +5% |
| Density | 3,100 kg/m³ | 2,500 kg/m³ | -19% |
| Thermal conductivity | 0.7 W/m·K | 1 W/m·K | +43% |
| Specific heat | 410 J/kg·K | 840 J/kg·K | +105% |
| Coefficient of thermal expansion | 0.000009 1/K | 0.000009 1/K | +5% |
Difference is Soda-Lime Glass (Tempered) relative to Lead Glass (Crystal Glass ~24% PbO). 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
- EN 12128
- standard
- ASTM
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