Hydrophobic Coating Alkali-Free Glass – Alkali-Free Glass (CTE 3.2 x 10^-6 /K, 350 nm – 2.0 um); water contact angle > 110 degrees. No minimum order; DFM review included with every RFQ.
The point of hydrophobic coating alkali-free glass is simple: sheds water and fingerprints on touch faces. We deposit it by vapor-phase silanization onto Alkali-Free Glass and verify water contact angle > 110 degrees on every lot.
The numbers
| Material | Alkali-Free Glass (AF32 / EAGLE-class display glass) |
|---|---|
| Thermal expansion (CTE) | 3.2 x 10^-6 /K |
| Service temperature | 600 C (Tg 717 C) |
| Transmission range | 350 nm – 2.0 um |
| Density | 2.43 g/cm3 |
| Knoop hardness | 590 kg/mm2 |
| Refractive index | 1.51 @ 587 nm |
| Stock thickness | 0.10 – 1.1 mm |
| Maximum blank size | 400 x 300 mm |
| Treatment | Hydrophobic Coating – fluorosilane easy-clean layer |
| Specification | water contact angle > 110 degrees |
| Deposition / method | vapor-phase silanization |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Specification advice
Three items decide most of the cost and lead time on this work:
- Material note: thin sheets below 0.3 mm demand carrier-supported handling through every step.
- Sequence matters: all machining happens before hydrophobic coating; post-coating rework is not economical.
- 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
One material, many routes: on Alkali-Free Glass we also quote drilling, lapping, double-side polishing, cnc machining, and multi-step drawings are the norm rather than the exception.
Typical applications
hydrophobic coating alkali-free glass shows up across oled packaging (cover lids, frit-seal frames, fill-port plates); ccd inspection equipment (CCD cover plates, reference grids, stage glass); mems devices (cap wafers, TGV substrates, motion-sensor lids). Background reading on the underlying material science: SCHOTT AF 32 eco.
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: alkali-free display glass, alkali-free glass wafers, optical glass options.
Frequently asked questions
Is there a minimum order for hydrophobic coating alkali-free glass?
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 Alkali-Free Glass parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Thin sheets below 0.3 mm demand carrier-supported handling through every step.
Specifications on this page were last reviewed by our engineering team in September 2026.