Synthetic quartz & fused quartz
See below for a range of quartz glass products offered by USTRON.
We have manufactured quartz products in Shanghai, China since 2000, offering a variety of synthetic quartz glass and fused quartz glass in a range of different shapes and for varying applications.
- Vapor deposition materials and sputtering target materials
- Optical glass substrates and heat-resistant window glass
- Materials for semiconductors and solar batteries, quartz boats, acid-resistant washing tanks and jigs
- Quartz core tubes and quartz chambers, etc.
Annular rings for thin-film vapor deposition
Quartz glass plates (up to 1.5 m × 2 m)
Ground quartz glass products
Transparent quartz crucibles
Other processed quartz glass products
Properties
| Fused quartz glass | Synthetic quartz glass | |
|---|---|---|
| Purity | 99.99% | 99.999% |
| Stria direction | - | Stria free in one direction |
| OH（PPM) | 200 | 1200 |
| Wavelength used | 240〜2500nm | 200〜2500nm |
Properties
| Specification | Fused quartz glass | Synthetic quartz glass | |
|---|---|---|---|
| Composition | SiO2 Wt（％） | 100 | 100 |
| Thermal properties | Thermal expansion coefficient [10-7］（50〜200）℃ | 6 | 6 |
| Softening point（℃） | 1730 | 1600 | |
| Strain point （℃） | 1075 | 1025 | |
| Optical properties | Refractive index（nd） | 1.45847 | 1.45847 |
| Dispersion value（vd） | 67.7 | 67.7 | |
| Chemical properties | Alkali resistance （mg/cm2）※ | 0.032 | 0.032 |
| Mechanical properties | Density （g/cm3） | 2.20 | 2.20 |
| Young’s modulus （GPa） | 72 | 72 | |
| Hardness (Knoop)（kg/mm2） | 550 | 550 | |
| Electrical properties | Volume resistivity 1013(Ω・cm）at 200℃ | 4.0 | 4.0 |
| Dielectric constant （F/m） | 4.0 | 4.0 |
※Dissolved at a rate of 0.032 mg per square centimeter surface area in an NaOH solution (1%) at 20°C in 100 hours.
Transmittance chart
※The blue and red lines in the transmittance chart represent the transmittance of synthetic quartz and fused quartz, respectively.
Quartz rod and tube specifications
Please inquire about quartz rods and tubes in other sizes.
Transparent quartz tubes (material: 99.9% quartz)
Inner diameter x outer diameter x length
| Specifications |
|---|
| 1.4×3×1200 |
| 3×5×1200 |
| 4×6×1200 |
| 6×8×1200 |
| 7×9×1200 |
| 8×9×1200 |
| 9×11×1200 |
| 10×12×1200 |
| 11×13×1200 |
| 12×14×1200 |
| 13×15×1200 |
| 14×16×1200 |
| 17×15×1200 |
| 17×19×1200 |
| 16×20×1200 |
| 18×20.5×1200 |
| 20×23×1200 |
| 21×24×1200 |
| 22×25×1200 |
| 26×30×1200 |
| 35×38×1200 |
| 36×40×1200 |
| 46×50×1200 |
Transparent quartz rods(material: 99.9% quartz)
Outer diameter x length
| Specifications |
|---|
| 3×1240 |
| 3.5×1270 |
| 5×1240 |
| 6×1240 |
| 10×1240 |
| 12×1240 |
| 14×1240 |
| 15×1240 |
| 16×1240 |
| 18×1240 |
| 25×1240 |
