Quick answer: Coring ITO Coated Glass covers ITO Coated Glass (CTE substrate dependent, >85% visible @ 100 ohm/sq); Coring to diameter +/-0.05 mm. Prototypes ship in 5-10 working days.
coring ito coated glass is a materials problem before it is a machining problem. ITO Coated Glass has transparent conductivity and a Knoop hardness of substrate value, so the coring recipe – feeds, coolant, tooling – differs from what works on ordinary float glass. The line runs diamond core drills with rotary fixtures and holds diameter +/-0.05 mm.
Key parameters
| Material | ITO Coated Glass (ITO on soda-lime, borosilicate or alkali-free) |
|---|---|
| Thermal expansion (CTE) | substrate dependent |
| Service temperature | 350 C (coating stable) |
| Transmission range | >85% visible @ 100 ohm/sq |
| Density | 2.23 – 2.51 g/cm3 |
| Knoop hardness | substrate value |
| Refractive index | 1.9 – 2.1 (ITO film) |
| Stock thickness | 0.30 – 3.0 mm substrates |
| Maximum blank size | 400 x 300 mm |
| Process | Coring |
| Working tolerance | diameter +/-0.05 mm |
| Minimum feature | 2 mm core diameter |
| Surface finish | ground bore, honed option |
| Thickness window | 1 – 60 mm |
| Edge condition | entry/exit chamfer standard |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Getting the drawing right
Three items decide most of the cost and lead time on this work:
- Material note: machining happens film-side-aware: scribing, edge deletion and contact zones are defined before cutting.
- Process boundary: wall thickness between adjacent cores should exceed 2 mm to avoid bridge cracking.
- 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.
Capabilities and limits
The core strength of Coring is large-diameter discs, rings and through-bores from plate stock up to 60 mm thick. The honest limit: wall thickness between adjacent cores should exceed 2 mm to avoid bridge cracking. Both belong on the drawing before quoting, not after.
One material, many routes: on ITO Coated Glass we also quote dicing, edge grinding, cnc machining, laser cutting, and multi-step drawings are the norm rather than the exception.
Who orders this
Orders for coring ito coated glass cluster in laboratory instruments (cuvettes, sight glasses, stir-cell windows); semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows); medical diagnostics (flow cells, slides, microplate bottoms, cuvette windows). Background reading on the underlying material science: ScienceDirect: indium tin oxide.
Dimensions still moving? Configure this part live in the 3D builder below, or open the full custom glass machining 3D builder to start from a blank canvas.
Useful companion pages: custom ITO glass, glass wafer coring, FTO conductive glass.
Frequently asked questions
What tolerances are achievable on ITO Coated Glass parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Machining happens film-side-aware: scribing, edge deletion and contact zones are defined before cutting.
What thickness range do you stock for ITO Coated Glass?
Standard stock spans 0.30 – 3.0 mm substrates, with blanks up to 400 x 300 mm. Other formats are sourced per order.
How does ITO Coated Glass behave under heat?
CTE is substrate dependent and continuous service reaches 350 C (coating stable), which is what drives its use where transparent conductivity matters.
What accuracy does coring hold?
Diameter +/-0.05 mm with minimum features of 2 mm core diameter. Wall thickness between adjacent cores should exceed 2 mm to avoid bridge cracking.
Specifications on this page were last reviewed by our engineering team in July 2026.