Quartz Glass JGS2
JGS1 quartz plates/sheets: ZS-1 (far-UV optical quartz glass), corresponding grade JGS1. Oxyhydrogen-melted optical quartz contains abundant hydroxyl (2000ppm), giving good UV transmission, better than other glasses in shortwave UV. Transmission at 185μm reaches 90%; synthetic quartz has an absorption peak at 2730nm and no granular structure. Optical material for 185—2500mμ. Transmission spectrum at 1.0mm thickness. JGS2 quartz plates/sheets: ZS-2 (UV optical quartz glass), corresponding grade JGS2. Quartz raw material processed with an oxyhydrogen flame contains tens of ppm of metallic impurities; absorption at 2730nm, hydroxyl 100-200ppm, with striae and granular structure. Good transmission material over 220—2500μm. Quartz-sheet properties: specialized industrial silica glass with useful physical/chemical properties. 1. Heat resistance: softening about 1730℃, prolonged use at 1100℃ and brief use to 1450℃. 2. Corrosion resistance: almost no reaction with acids except hydrofluoric acid; acid resistance 30 times ceramics and 150 times stainless steel. 3. Low thermal expansion tolerates temperature changes; heated to about 1100℃ and placed in ambient water, it does not crack. 4. Good UV-to-IR transmission, visible above 93% and UV reaching above 80. 5. Good electrical insulation, including good electrical properties even at room temperature. JGS3 quartz sheets: HS (IR optical quartz glass), corresponding grade JGS3. Vacuum electrically fused quartz contains tens of ppm of metals, small bubbles, granules and striae, almost no OH, high IR transmission above 85%, for 260—3500μm. Transmission spectrum at 1.0mm thickness.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | Quartz Glass JGS1.JGS2.JGS3 Transmits Far-UV, Visible and Near-IR, with Low Expansion, Good Chemical Stability, Uniform Bubbles/Striae, and Spectral Curves from 200 nm to 2500 nm |
| Surface Quality | 40-20，60-40，80-50 |
| Thickness | ±0.01mm±0.02mm |
| Centration Error | 5Arc second1Arc Minute |
| Process Range | Thickness as thin as 0.5mm |
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