Product type: Quartz Plate. Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass. Model: OS-0061.
Overview
High Temperature UV Transmittance Jgs1 Quartz Glass Plate Clear Window Round Fused Silica is a fused silica / quartz window made from Ohara Sk-1320 Fused Silica. Typical applications: Rubber, Plastic, Chemical, Construction and Metallurgy. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Substrate | Ohara Sk-1320 Fused Silica |
|---|---|
| Type | Quartz Plate |
| Application | Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass |
| Model NO. | OS-0061 |
| Bubbles | 0-0.03mm2/100cm3 |
| Striae | Grade a in One Direction(as Per Mil-G-174) |
| Birefrengence(Strain) | 10nm/Cm and Under |
| Supplier | C-Laser (Taicang) Material Technology Co., Ltd. |
Technical data
| Item | Unit | Value |
| Density | g/cm3 | 2.20 |
| Yong's Module | GPa | 71.4 |
| Poisson's ratio | 0.17 | |
| Compression strength | GPa | 1.1 |
| Bending strength | MPa | 69 |
| Tensile strength | MPa | 55 |
| Torsional rigidity | GPa | 30.9 |
| Vickers hardness | GPa | 8.8-10.1 |
| Knoop hardness | Kg/mm2 | 6.4-7.0 |
| Coefficient of thermal expansion | cm/cmºC | 5.5*10-7 |
| Softening point | ºC | 1700 |
| Annealing point | ºC | 1160 |
| Strain point | ºC | 1060 |
| Specific heat(26ºC) | kJ/kgK | 0.74 |
| Thermal conductivity ratio(26ºC) | cal/cm.sec.ºC | 1.1 |
| Thermal conductivity ratio(100ºC) | Cal/cm.sec.ºC | 1.1 |
What to specify when you request a quote
- Material and grade — listed as “Ohara Sk-1320 Fused Silica”; name the glass or crystal grade (for example JGS1, N-BK7, Borofloat 33, sapphire) because it fixes the transmission band and thermal limits.
- Diameter or outline — give the nominal size and the tolerance you can accept.
- Thickness — state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see Fused Silica Windows for UV and Laser Optical Systems. How parts like this are machined and finished is covered in Precision CNC Machining of Quartz & Fused Silica Components. For an application example, read Quartz Glass Windows for High-Temperature Appliance Modules. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is 2× 100 mm JGS1 & JGS2 Quartz Glass Sheets.
