| Composition: | SiO₂ (Silicon Dioxide): ~70-75% |
| MgO (Magnesia): ~0-2% | |
| Fe₂O₃(Iron Oxide ): <0.01% | |
| CaO (Lime):10-13% | |
| Na₂O (Sodium Oxide/Soda) : ~12-15% | |
| Al₂O₃ (Aluminum Oxide): ~1-2% | |
| Thermal Properties | Softening Point: 720°C-750°C (1328°F to 1382°F) |
| Annealing Point: 550°C-600°C(1022°F to 1112°F) | |
| Strain Point: 500°C-520°C(932°F to 968°F) | |
| Maximum Operating Temperature: 400°C-450°C(752°F to 842°F) | |
| Thermal Expansion Coefficient (20°C to 300°C): 9.0 × 10⁻⁶/°C | |
| Thermal Conductivity:0.93 W.m/m2°C | |
| Coefficient of Thermal Stress:0.62 mPa/°C | |
| Optical Properties | Refractive Index: 1.50-1.52 |
| Light Transmittance: >91% | |
| UV Cut-off Wavelength: ~350 nm | |
| Solar Energy Transmittance:Up to 90% for solar panel appliction | |
| Mechanical Properties | Density: 2.5 g/cm³ |
| Young's Modulus: 70-75 GPa | |
| Hardness (Moh’s Scale):5 to 6 | |
| Tempered Strength:Up to IK07 or higher, depending on thickness and coatings. | |
| Poisson's Ratio: 0.20-0.25 | |
| Bending Strength: 80-120 MPa |

Customer Visit

Company Profile




Ready to take your glass project to the next level? Contact us today to discuss your custom glass needs and get a quote!
contact us