Quartz Glass Round Glass Discs – Quartz Glass (CTE 0.59 x 10^-6 /K, 260 nm – 2.5 um); Diameter 2 – 450 mm, thickness 0.1 – 50 mm. No minimum order; DFM review included with every RFQ.
A drawing for quartz glass round glass discs is mostly a conversation about edges and datums. We produce them in Quartz Glass at Diameter 2 – 450 mm, thickness 0.1 – 50 mm, with diameter +/-0.02 mm as the controlling tolerance, and finish the perimeter per spec.
Key parameters
| Material | Quartz Glass (GE214-equivalent, semiconductor grade) |
|---|---|
| Thermal expansion (CTE) | 0.59 x 10^-6 /K |
| Service temperature | 1,050 C continuous |
| Transmission range | 260 nm – 2.5 um |
| Density | 2.20 g/cm3 |
| Knoop hardness | 500 kg/mm2 |
| Refractive index | 1.459 @ 587 nm |
| Stock thickness | 0.20 – 60 mm |
| Maximum blank size | 450 mm diameter |
| Geometry | Round Glass Discs |
| Size envelope | Diameter 2 – 450 mm, thickness 0.1 – 50 mm |
| Key tolerance | diameter +/-0.02 mm |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
DFM notes from the shop floor
Before sending the RFQ, check these against your drawing:
- Material note: natural-quartz batches vary in metallic ppm, so semiconductor lots need certs per melt.
- Hold the controlling dimension (diameter +/-0.02 mm) and let secondary dimensions carry standard tolerance – it is the single biggest cost lever.
- Over-specification is the quiet budget killer: a 20/10 scratch-dig face costs roughly three times an 80/50 face, so grade each surface individually.
The full rules live in our tolerance design guide and holes and edges design guide.
Process window
Beyond this page, Quartz Glass routinely runs through etching, grinding, laser cutting, lapping in our shop – most real parts combine two or three of these steps.
Production route: coring, cnc machining, edge grinding – selected per geometry and volume. Edge condition: entry/exit chamfer standard.
Where these parts end up
quartz glass round glass discs shows up across semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows); laboratory instruments (cuvettes, sight glasses, stir-cell windows). Background reading on the underlying material science: ScienceDirect: quartz glass.
The fastest route to a quote is geometry: use the 3D builder below, draw a dimensioned 2D drawing from it, or open the site-wide custom glass machining 3D + 2D builder for fully custom parts.
Related reading on this site: precision glass grinding, perforated quartz plates, tolerance design guide.
Frequently asked questions
How does Quartz Glass behave under heat?
CTE is 0.59 x 10^-6 /K and continuous service reaches 1,050 C continuous, which is what drives its use where fused from natural quartz crystal matters.
What sizes are available for round glass discs?
Diameter 2 – 450 mm, thickness 0.1 – 50 mm, held to diameter +/-0.02 mm.
Is there a minimum order for quartz glass round glass discs?
No. Single prototypes are accepted, and pricing steps down at 10, 100 and 1,000 pieces.
How fast can prototypes ship?
Machined prototypes ship in 5 – 10 working days. Coated or bonded parts add 1 – 2 weeks depending on queue slots.
Specifications on this page were last reviewed by our engineering team in August 2026.