Quartz Materials
S-Series High-Transmission Synthetic QuartzS-Series High-Transmission Synthetic Quartz
The S series is a fully synthetic fused quartz with a stable hydroxyl (OH) content of about 200 ppm, designed for high-efficiency UV / VUV (ultraviolet / vacuum ultraviolet) lamp applications. The tubing is produced with our proprietary multi-step S-ZUG process.
Key Features
Very high purity
Excellent radiation (solarization) stability
Extremely low bubble content
Nearly defect-free surface
Wide range of sizes available
Typical Applications
Xenon excimer lamps (172 nm)
Optical Properties
Typical transmittance at 2 mm wall thickness
| Wavelength [nm] | 172 | 200 | 254 | 360 |
|---|---|---|---|---|
| Transmission [%] (2 mm wall) | 88 | 91 | 92 | 93 |
OD
| OD range [mm] | Tolerance [mm] | Wall thickness range [mm] |
|---|---|---|
| 7 ≤ OD ≤ 17 | ±0.3 | ≥0.8 ≤3.5 |
| 17 < OD ≤ 25 | ±0.4 | ≥1.0 ≤4.5 |
| 25 < OD ≤ 30 | ±0.5 | ≥1.2 ≤4.5 |
| 30 < OD ≤ 35 | ±0.6 | >1.2 ≤4.5 |
| 35 < OD ≤ 40 | ±0.8 | >1.2 ≤4.5 |
| 40 < OD ≤ 50 | ±1.0 | ≥2.0 ≤4.5 |
| 50 < OD ≤ 60 | ±1.3 | ≥2.0 ≤4.5 |
| 60 < OD ≤ 90 | ±2.0 | —— |
Wall Thickness
| Wall thickness WT range [mm] | Tolerance [mm] | Max. total bubble length ² |
|---|---|---|
| ≥0.5 ≤1.2 | ±0.2 | <2.0% |
| >1.2 ≤2.0 | ±0.3 | <2.5% |
| >2.0 ≤2.8 | ±0.4 | <3.0% |
| >2.8 ≤3.7 | ±0.5 | <3.5% |
| >3.7 ≤4.5 | ±0.6 | <4.0% |
Form & Length Tolerances
| Item | Scope | Tolerance | Notes |
|---|---|---|---|
| Ovality | Fabricated length | < ½ OD tolerance | — |
| Axial bow (edge skew) | Fabricated length | < ½ OD tolerance | — |
| Bow | All sizes | < 1.0 mm / m | Not annealed |
| Bow | All sizes | < 1.5 mm / m | Annealed |
| Length | — | +20 mm / -0 mm | Cut and broken |
Appearance
| Item | Requirement |
|---|---|
| Inclusions | None |
| Surface contamination | None |
| Outer surface deformation | None |
| Discoloration / stains | None |
Notes
¹ Other sizes and tolerances available on request
² Bubbles shorter than 0.5 mm and narrower than 0.08 mm are not counted
³ Other cutting methods available on request
Chemical Properties
| OH content | Li | Na | K | Mg | Ca | Fe | Cu | Cr | Mn | Al | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ~200 (unchanged by annealing) | 0.01 | 0.05 | 0.1 | 0.005 | 0.05 | 0.02 | 0.01 | 0.005 | 0.005 | 0.05 | 0.05 |
Unit: ppm (µg/g)
Physical Properties
| Parameter | Value |
|---|---|
| Softening point | ~1600 ℃ |
| Annealing point | ~1120 ℃ |
| Strain point | ~1025 ℃ |
| Viscosity at 1300 ℃ | 11.4 dPas |
| Maximum Operating Temperature | Continuous: ~950 ℃; short-term: ~1200 ℃ |
| Density | 2.2 g/cm³ |
