Coring JGS2 Quartz Glass – JGS2 Quartz Glass (CTE 0.55 x 10^-6 /K, 220 nm – 2.5 um); Coring to diameter +/-0.05 mm. No minimum order; DFM review included with every RFQ.
Ask any process engineer what makes jgs2 quartz glass difficult and the answer is specific: thicker blanks need stress-relief annealing before tight-flatness grinding. Our coring line is tooled around exactly that – diamond core drills with rotary fixtures – holding diameter +/-0.05 mm on parts from 1 – 60 mm thick.
Specification envelope
| 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 | Coring |
| Working tolerance | diameter +/-0.05 mm |
| Minimum feature | 2 mm core diameter |
| Surface finish | ground bore, honed option |
| Thickness window | 1 – 60 mm |
| Edge condition | entry/exit chamfer standard |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Capabilities and limits
The core strength of Coring is large-diameter discs, rings and through-bores from plate stock up to 60 mm thick. The honest limit: wall thickness between adjacent cores should exceed 2 mm to avoid bridge cracking. Both belong on the drawing before quoting, not after.
One material, many routes: on JGS2 Quartz Glass we also quote drilling, etching, sandblasting, laser cutting, and multi-step drawings are the norm rather than the exception.
Design guidance
Before sending the RFQ, check these against your drawing:
- Material note: thicker blanks need stress-relief annealing before tight-flatness grinding.
- Process boundary: wall thickness between adjacent cores should exceed 2 mm to avoid bridge cracking.
- 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.
Who orders this
Orders for coring jgs2 quartz glass cluster in led packaging (groove covers, phosphor carriers, package 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.
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: glass wafer coring, fused silica wafers 2-12 inch, high-purity quartz guide.
Common questions
What equipment runs the coring work?
Diamond core drills with rotary fixtures.
Is there a minimum order for coring 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.