Quick answer: Double-Side Polishing JGS2 Quartz Glass covers JGS2 Quartz Glass (CTE 0.55 x 10^-6 /K, 220 nm – 2.5 um); Double-Side Polishing to TTV under 3 um. Prototypes ship in 5-10 working days.
We DSP-polish JGS2 Quartz Glass daily, in thicknesses from 0.1 – 10 mm. The controlling numbers: TTV under 3 um working tolerance, Ra below 0.5 nm both faces minimum features, and 60/40 to 20/10 both faces off the machine. Where the drawing asks for more, downstream lapping and polishing take over.
Specifications at a glance
| Material | JGS2 Quartz Glass (Optical grade, bubble class 1) |
|---|---|
| Thermal expansion (CTE) | 0.55 x 10^-6 /K |
| Service temperature | 1,100 C continuous |
| Transmission range | 220 nm – 2.5 um |
| Density | 2.20 g/cm3 |
| Knoop hardness | 500 kg/mm2 |
| Refractive index | 1.458 @ 587 nm |
| Stock thickness | 0.20 – 40 mm |
| Maximum blank size | 300 mm diameter |
| Process | Double-Side Polishing |
| Working tolerance | TTV under 3 um |
| Minimum feature | Ra below 0.5 nm both faces |
| Surface finish | 60/40 to 20/10 both faces |
| Thickness window | 0.1 – 10 mm |
| Edge condition | edge-rounded before DSP |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
What the process holds
Double-Side Polishing earns its place through wafer-grade parallelism and sub-nanometer roughness on both faces simultaneously. Its boundary condition – parts must be round or near-round; strongly asymmetric outlines wedge in the carriers – is the first thing our DFM review checks.
Beyond this page, JGS2 Quartz Glass routinely runs through cnc machining, laser cutting, drilling, polishing in our shop – most real parts combine two or three of these steps.
Specification advice
Before sending the RFQ, check these against your drawing:
- Material note: thicker blanks need stress-relief annealing before tight-flatness grinding.
- Process boundary: parts must be round or near-round; strongly asymmetric outlines wedge in the carriers.
- 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
double-side polishing jgs2 quartz glass shows up across semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows); industrial displays (touch covers, gauge windows, printed bezels); machine vision (camera windows, ring-light diffusers, calibration plates). Background reading on the underlying material science: ScienceDirect: fused quartz.
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.
For adjacent specifications, see fused silica wafers 2-12 inch, AR optical windows, custom microfluidic chip.
Common questions
What equipment runs the double-side polishing work?
Planetary double-side polishers with carrier plates.
Is there a minimum order for double-side polishing jgs2 quartz glass?
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 September 2026.