Borosilicate Glass
Borosilicate glass (internationally known as PYREX glass) physical and chemical properties; borosilicate glass (internationally known as PYREX glass) spectral plot. Wavelength(mm)
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Overview
Specifications
| Parameter | Value |
|---|---|
| Silicon content | >80% |
| Strain temperature | 520℃ |
| Annealing temperature | 560℃ |
| Softening Temperature | 820℃ |
| Refractive Index | 1.47 |
| Transmittance | ≧90％ |
| Elastic modulus | 67KNmm⁻² |
| Tensile strength | 40-120Nmm⁻² |
| Processing temperature [104dpas] | 1220℃ |
| Coefficient of Thermal Expansion [20-300℃] | 3.3×10⁻⁶/K⁻¹ |
| Poisson's ratio μ | 0.2 |
| Density [20℃] | 2.23g/cm³ |
| Specific heat | 0.9Jg⁻¹K⁻¹ |
| Thermal conductivity | 1.2Wm⁻¹K⁻¹ |
| Water resistance [ISO 719] | 1级 |
| Acid resistance [ISO 195] | 1级 |
| Alkali resistance [ISO 695] | 2级 |
| Thermal shock resistance [Glass-rod method; glass rod Φ6×30mm] | 300℃ |
Datasheet
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