Fused Silica Rectangular Glass Plates: Fused Silica (CTE 0.55 x 10^-6 /K, 185 nm – 2.5 um); Up to 600 x 400 mm, thickness 0.2 – 40 mm. Single-piece prototypes to production volumes, quoted from your drawing.
A drawing for fused silica rectangular glass plates is mostly a conversation about edges and datums. We produce them in Fused Silica at Up to 600 x 400 mm, thickness 0.2 – 40 mm, with length/width +/-0.05 mm as the controlling tolerance, and finish the perimeter per spec.
Specification envelope
| Material | Fused Silica (JGS1 (UV), JGS2 (standard), JGS3 (IR)) |
|---|---|
| Thermal expansion (CTE) | 0.55 x 10^-6 /K |
| Service temperature | 1,100 C continuous |
| Transmission range | 185 nm – 2.5 um |
| Density | 2.20 g/cm3 |
| Knoop hardness | 500 kg/mm2 |
| Refractive index | 1.458 @ 587 nm |
| Stock thickness | 0.10 – 50 mm |
| Maximum blank size | 450 x 450 mm |
| Geometry | Rectangular Glass Plates |
| Size envelope | Up to 600 x 400 mm, thickness 0.2 – 40 mm |
| Key tolerance | length/width +/-0.05 mm |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
What the process holds
Beyond this page, Fused Silica routinely runs through sandblasting, coring, grinding, laser cutting in our shop – most real parts combine two or three of these steps.
Production route: cnc machining, grinding, edge grinding – selected per geometry and volume. Edge condition: chamfered 0.1 – 0.5 mm as standard.
Specification advice
Before sending the RFQ, check these against your drawing:
- Material note: its hardness and brittleness demand diamond tooling and controlled feeds.
- Hold the controlling dimension (length/width +/-0.05 mm) and let secondary dimensions carry standard tolerance – it is the single biggest cost lever.
- 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.
Typical applications
fused silica rectangular glass plates shows up across optical sensors (sensor windows, filter caps, lens covers); aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); mems devices (cap wafers, TGV substrates, motion-sensor lids). Background reading on the underlying material science: RP Photonics: fused silica.
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 wafer applications, beam splitter glass.
Frequently asked questions
How does Fused Silica 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 near-zero thermal expansion matters.
What sizes are available for rectangular glass plates?
Up to 600 x 400 mm, thickness 0.2 – 40 mm, held to length/width +/-0.05 mm.
Is there a minimum order for fused silica rectangular glass plates?
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.