9.0×10⁻⁶/K
Soda-Lime Glass / 钠钙玻璃
Economical general-purpose glass, higher CTE — for non-heat-resistant routine ware
Physical & chemical properties
| Parameter | Value |
|---|---|
| 线膨胀系数 (20–300℃) Linear expansion (20–300℃) | 9.0×10⁻⁶/K |
| 软化点 Softening point | ≈700 ℃ |
| 最高使用温度（连续） Max service temp (continuous) | 120 ℃（不可直火） |
| 耐温急变 ΔT Thermal shock resistance | ≈60 ℃ |
| 密度 Density | 2.50 g/cm³ |
| 透光率 Visible transmission | ≥88% |
| 耐水性 (ISO 719) Hydrolytic resistance | HGB 3 级 |
| 耐酸性 Acid resistance | 一般 |
| 耐碱性 Alkali resistance | 一般 |
| 对应标准 Standards | GB/T 6579 / ISO 718 |
Selection note Not for direct flame; avoid abrupt thermal shock.
Typical applications
Common test tubes, petri dishes, specimen jars, display bottles, non-precision measures, lampworking practice — where heat/accuracy demands are low.
Usage notes
Not for direct flame; avoid abrupt thermal shock.