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 |
Design guidance
Three items decide most of the cost and lead time on this work:
- 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.
What the process holds
Beyond this page, Quartz Glass routinely runs through drilling, edge grinding, polishing, cnc machining 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.
Who orders this
The recurring buyers of quartz glass round glass discs: 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.
Engineers scoping this work usually also review CNC machining capability, high-purity quartz guide, high-temperature quartz windows.
Frequently asked questions
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.
What files do you need for a quote?
A dimensioned PDF plus DXF or STEP geometry. If only a sketch exists, our drawing review service formalizes it before quoting.
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
Specifications on this page were last reviewed by our engineering team in September 2026.