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 |
Process window
Beyond this page, Fused Silica routinely runs through etching, drilling, cnc machining, edge grinding 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.
Getting the drawing right
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.
Application context
fused silica rectangular glass plates shows up across ccd inspection equipment (CCD cover plates, reference grids, stage glass); aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows). 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.
For adjacent specifications, see fused silica wafers 2-12 inch, fused silica wafer applications, precision glass drilling.
Frequently asked questions
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.
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
What tolerances are achievable on Fused Silica parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Its hardness and brittleness demand diamond tooling and controlled feeds.
Specifications on this page were last reviewed by our engineering team in September 2026.