0.5×10⁻⁶/K
Fused Quartz / Silica / 石英玻璃
Ultra-pure fused silica, service to 1100℃, outstanding UV transmission
Physical & chemical properties
| Parameter | Value |
|---|---|
| 线膨胀系数 (20–300℃) Linear expansion (20–300℃) | 0.5×10⁻⁶/K |
| 软化点 Softening point | ≈1730 ℃ |
| 最高使用温度（连续） Max service temp (continuous) | 1100 ℃ |
| 耐温急变 ΔT Thermal shock resistance | 极好（≈1000℃） |
| 密度 Density | 2.20 g/cm³ |
| 紫外透过率 UV transmission | ≥85% @ 254nm |
| 耐酸性 Acid resistance | 极好（除 HF） |
| 耐碱性 Alkali resistance | 中 |
| 对应标准 Standards | ISO 9385 / ASTM C158 |
Selection note Avoid HF and un-rinsed alkali flux; brittle under impact, use soft clamping.
Typical applications
High-temp furnace tubes, UV cuvettes, semiconductor/litho carriers, preforms, laser cavities — extreme temperature & optics.
Usage notes
Avoid HF and un-rinsed alkali flux; brittle under impact, use soft clamping.