4 Inch (100 mm) JGS1 Quartz Glass Wafers: JGS1 Quartz Glass (CTE 0.55 x 10^-6 /K, 185 nm – 2.5 um (UV grade)); 100 mm format, TTV <3 um. Single-piece prototypes to production volumes, quoted from your drawing.
4 inch (100 mm) jgs1 quartz glass wafers are supplied as finished substrates: edge-rounded, cleaned and packed in wafer cassettes. The material brings deep-UV transmission to 185 nm and no bubbles or inclusions in the UV path; the format brings SEMI-compatible handling.
Specification envelope
| Material | JGS1 Quartz Glass (UV-grade synthetic, bubble class 0) |
|---|---|
| Thermal expansion (CTE) | 0.55 x 10^-6 /K |
| Service temperature | 1,100 C continuous |
| Transmission range | 185 nm – 2.5 um (UV grade) |
| Density | 2.20 g/cm3 |
| Knoop hardness | 500 kg/mm2 |
| Refractive index | 1.458 @ 587 nm |
| Stock thickness | 0.10 – 30 mm |
| Maximum blank size | 300 mm diameter |
| Diameter / format | 100 mm |
| Thickness | 0.5 or 0.7 mm standard |
| TTV | <3 um |
| Flat / notch | SEMI standard |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
What the process holds
Beyond this page, JGS1 Quartz Glass routinely runs through edge grinding, drilling, ultrasonic machining, etching in our shop – most real parts combine two or three of these steps.
Getting the drawing right
Three items decide most of the cost and lead time on this work:
- Material note: UV-grade surfaces must be polished without subsurface damage that scatters below 250 nm.
- 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.
Who orders this
Orders for 4 inch (100 mm) jgs1 quartz glass wafers cluster in laser systems (windows, beam splitters, debris shields); aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports). Background reading on the underlying material science: RP Photonics: fused silica.
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: JGS1 quartz glass, fused silica wafers 2-12 inch, precision glass grinding.
Frequently asked questions
How does JGS1 Quartz Glass behave under heat?
CTE is 0.55 x 10^-6 /K and continuous service reaches 1,100 C continuous, which is what drives its use where deep-UV transmission to 185 nm matters.
Is there a minimum order for 4 inch (100 mm) jgs1 quartz glass wafers?
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.
Specifications on this page were last reviewed by our engineering team in August 2026.