Quick answer: CNC Machining JGS2 Quartz Glass covers JGS2 Quartz Glass (CTE 0.55 x 10^-6 /K, 220 nm – 2.5 um); CNC Machining to +/-0.01 mm positional. Prototypes ship in 5-10 working days.
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 cnc machining line is tooled around exactly that – 4-axis machining centers with diamond tooling and through-spindle coolant – holding +/-0.01 mm positional on parts from 0.5 – 50 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 | CNC Machining |
| Working tolerance | +/-0.01 mm positional |
| Minimum feature | 0.4 mm slot width |
| Surface finish | Ra 0.4 um ground, optional polish |
| Thickness window | 0.5 – 50 mm |
| Edge condition | chamfered 0.1 – 0.5 mm as standard |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
What the process holds
CNC Machining earns its place through complex 3D geometry – pockets, steps, counterbores and compound edges in one setup. Its boundary condition – internal corners carry a minimum radius equal to the smallest practical tool, typically R0.5 mm – is the first thing our DFM review checks.
Beyond this page, JGS2 Quartz Glass routinely runs through laser cutting, grinding, etching, lapping in our shop – most real parts combine two or three of these steps.
Specification advice
Three items decide most of the cost and lead time on this work:
- Material note: thicker blanks need stress-relief annealing before tight-flatness grinding.
- Process boundary: internal corners carry a minimum radius equal to the smallest practical tool, typically R0.5 mm.
- 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 cnc machining jgs2 quartz glass cluster in semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows); laser systems (windows, beam splitters, debris shields); led packaging (groove covers, phosphor carriers, package windows). 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.
Useful companion pages: CNC machining capability, fused silica wafers 2-12 inch, machining tolerance guide.
Frequently asked questions
What equipment runs the cnc machining work?
4-axis machining centers with diamond tooling and through-spindle coolant.
Is there a minimum order for cnc machining 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 August 2026.