Quick answer: JGS1 vs JGS2 Quartz Glass: How to Choose covers custom precision glass machined to drawing with inspection reports. Prototypes ship in 5-10 working days.
The jgs1 vs jgs2 quartz glass: how to choose decision is really about UV band edge and bubble class. The short version: JGS1 for anything below 260 nm; JGS2 saves 20 – 30% for visible/NIR work.
Side by side
| JGS1 Quartz Glass | JGS2 Quartz Glass | |
|---|---|---|
| CTE | 0.55 x 10^-6 /K | 0.55 x 10^-6 /K |
| Service temp | 1,100 C continuous | 1,100 C continuous |
| Transmission | 185 nm – 2.5 um (UV grade) | 220 nm – 2.5 um |
| Hardness | 500 kg/mm2 | 500 kg/mm2 |
| Density | 2.20 g/cm3 | 2.20 g/cm3 |
| Signature trait | deep-UV transmission to 185 nm | visible and near-IR clarity |
The decision axis is UV band edge and bubble class. JGS1 for anything below 260 nm; JGS2 saves 20 – 30% for visible/NIR work.
Design guidance
Before sending the RFQ, check these against your drawing:
- 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.
Application context
jgs1 vs jgs2 quartz glass: how to choose shows up across medical diagnostics (flow cells, slides, microplate bottoms, cuvette windows); laser systems (windows, beam splitters, debris shields); optical sensors (sensor windows, filter caps, lens covers).
Prefer to sketch it? Our custom glass machining 3D + 2D builder accepts your dimensions directly and routes them to engineering.
Related reading on this site: surface quality guide, optical glass options, infrared windows.
Frequently asked questions
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.
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
Which should I choose?
As a rule: JGS1 for anything below 260 nm; JGS2 saves 20 – 30% for visible/NIR work. Borderline cases are worth a materials review with our engineers.
Is there a minimum order for jgs1 vs jgs2 quartz glass: how to choose?
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 August 2026.