2 Inch (50.8 mm) Quartz Glass Wafers – Quartz Glass (CTE 0.59 x 10^-6 /K, 260 nm – 2.5 um); 50.8 mm format, TTV <5 um. No minimum order; DFM review included with every RFQ.
2 inch (50.8 mm) quartz glass wafers are supplied as finished substrates: edge-rounded, cleaned and packed in wafer cassettes. The material brings fused from natural quartz crystal and plasma and halogen resistance; the format brings SEMI-compatible handling.
Specifications at a glance
| 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 |
| Diameter / format | 50.8 mm |
| Thickness | 0.2 – 1.0 mm typical |
| TTV | <5 um |
| Flat / notch | SEMI or C-flat |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Capabilities and limits
One material, many routes: on Quartz Glass we also quote etching, cnc machining, laser cutting, grinding, and multi-step drawings are the norm rather than the exception.
Specification advice
The shop-floor rules that matter here:
- Material note: natural-quartz batches vary in metallic ppm, so semiconductor lots need certs per melt.
- Specify flat or notch orientation relative to your device layout – regrinding orientation later scraps the wafer.
- 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.
For the complete framework, see the tolerance design guide and the holes and edges design guide.
Typical applications
Orders for 2 inch (50.8 mm) quartz glass wafers cluster in 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.
Dimensions still moving? Configure this part live in the 3D + 2D builder below, or open the full custom glass machining 3D + 2D builder to start from a blank canvas.
Useful companion pages: perforated quartz plates, high-temperature quartz windows, ITO coating process.
Frequently asked questions
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
What tolerances are achievable on Quartz Glass parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Natural-quartz batches vary in metallic ppm, so semiconductor lots need certs per melt.
What thickness range do you stock for Quartz Glass?
Standard stock spans 0.20 – 60 mm, with blanks up to 450 mm diameter. Other formats are sourced per order.
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.
Is there a minimum order for 2 inch (50.8 mm) quartz glass wafers?
No. Single prototypes are accepted, and pricing steps down at 10, 100 and 1,000 pieces.
Specifications on this page were last reviewed by our engineering team in October 2026.