Fused Silica Glass With Slots and Grooves – Fused Silica (CTE 0.55 x 10^-6 /K, 185 nm – 2.5 um); Slots from 0.4 mm wide, grooves from 0.2 mm deep. No minimum order; DFM review included with every RFQ.
fused silica glass with slots and grooves are ordered for alignment keys, wire channels and V-grooves. The geometry envelope is Slots from 0.4 mm wide, grooves from 0.2 mm deep, held to width +/-0.02 mm, in Fused Silica.
The numbers
| 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 | Glass With Slots and Grooves |
| Size envelope | Slots from 0.4 mm wide, grooves from 0.2 mm deep |
| Key tolerance | width +/-0.02 mm |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Specification advice
The shop-floor rules that matter here:
- Material note: its hardness and brittleness demand diamond tooling and controlled feeds.
- Hold the controlling dimension (width +/-0.02 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.
Process window
Beyond this page, Fused Silica routinely runs through drilling, double-side polishing, ultrasonic machining, sandblasting in our shop – most real parts combine two or three of these steps.
Production route: cnc machining, ultrasonic machining, etching – selected per geometry and volume. Edge condition: chamfered 0.1 – 0.5 mm as standard.
Who orders this
The recurring buyers of fused silica glass with slots and grooves: optical sensors (sensor windows, filter caps, lens covers); aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); microfluidic devices (chips, manifolds, via plates, bonded stacks). Background reading on the underlying material science: RP Photonics: fused silica.
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.
Engineers scoping this work usually also review CCD screening plates, fused silica material guide, wafer dicing process.
Buyer questions, answered
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 glass with slots and grooves?
Slots from 0.4 mm wide, grooves from 0.2 mm deep, held to width +/-0.02 mm.
Is there a minimum order for fused silica glass with slots and grooves?
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.
Specifications on this page were last reviewed by our engineering team in August 2026.