info@topapexquartz.com
1-6032640851
菜单
info@topapexquartz.com
1-6032640851
Opaque quartz glass, produced through electric fusion, features low transmittance and high thermal reflectivity, effectively reducing heat loss and extending the lifespan of heating components.
Features
This material is capable of welding, fire polishing, and high-precision optical polishing. It boasts high density, excellent mechanical polishability, and maintains good optical cleanliness after fire polishing, resulting in an extended operational lifespan.
Applications
Ideal for semiconductor thermal processing applications.
Physical properties
| Item | Unit | Testing results |
| Density | g/cm³ | 2.16-2.19 |
| Porosity | ＜0.5% | |
| Pore size | ＜10μm | |
| Expansion coefficient | 0.45 | |
| Specific heat at 20℃ | J/g.K | 0.75 |
| Max working temperature-continuous | ℃ | 1100 |
| Max working temperature-short term | ℃ | 1300 |
| Dielectric loss（room temperature） | 2*10-4 | |
| Thermal conductivity at 20℃ | 1.28 |
Chemical purity
| Model | Impurity Typical Value （ppm） | ||||||||||||||
| AI | Ca | Mg | Cu | Fe | Ni | Mn | Li | Na | K | Zr | Ti | B | Co | Total | |
| OQG-W | 12.29 | 1.05 | 0.03 | 0.0 | 0.53 | 0.01 | 0.00 | 0.30 | 0.98 | 0.47 | 1.64 | 1.42 | 0.00 | 0.00 | 18.72 |
Optical properties
| Item | OQG-W |
| Transmmission（400-2000nm） | ＜0.5% |
| Reflectivity（400-2200nm） | ＞60% |
We will contact you within 1 working day, please pay attention to the email with the suffix “@topapexquartz.com”.
