This page covers quartz plate at large-format scale, where thickness has to be engineered for structural integrity (sagging, mechanical load) rather than simply following the general plate tolerance table — the purchasing driver is size plus the reinforced thickness needed to keep that size flat and intact.
Dimensions
| Parameter | Specification |
|---|---|
| Length × Width | Custom, large-format — beyond the standard ~200mm band on Quartz Plates & Sheets |
| Large-diameter disc format | 25mm to 300mm+ cited range, thickness engineered to pressure/structural requirement |
| Thickness | Reinforced/increased relative to standard plate to prevent sagging or failure at large scale |
Structural Consideration
Unlike standard plate stock, large-format plates and slabs need thickness selected against the specific load case — continuous high-temperature service, mechanical support span, or heavy-duty industrial handling — not just a size-banded tolerance table. Confirm your load/temperature case so thickness can be engineered accordingly.
Thermal Performance
- Continuous operating temperature up to 1150°C cited for large-diameter discs used in industrial thermal insulation and viewing applications
- Suited to large-batch semiconductor furnace and industrial smelting observation use
Surface Finish
Optical-quality fire-polished surfaces available for camera/sensor-based process monitoring applications; general ground/frosted finish for non-optical large-format use.
Material
High-purity fused silica (99.9%+); low-extractable grade available where contamination control matters (pharmaceutical/semiconductor environments).
FAQ
How is large-format plate thickness determined?
By your specific load case — temperature, span, and mechanical support — rather than a standard size-based tolerance table. Provide your operating conditions and we’ll confirm the appropriate thickness.
What’s the largest disc diameter available?
300mm+ is cited as achievable for large-diameter discs; confirm your specific size against current production capability.