Hydrophobic Coating Borosilicate Glass: Borosilicate Glass (CTE 3.3 x 10^-6 /K, 360 nm – 2.0 um); water contact angle > 110 degrees. Single-piece prototypes to production volumes, quoted from your drawing.
hydrophobic coating borosilicate glass is fluorosilane easy-clean layer applied by vapor-phase silanization. On Borosilicate Glass it sheds water and fingerprints on touch faces – the specification we run to is water contact angle > 110 degrees.
The numbers
| Material | Borosilicate Glass (3.3 expansion group per ISO 3585) |
|---|---|
| Thermal expansion (CTE) | 3.3 x 10^-6 /K |
| Service temperature | 450 C continuous |
| Transmission range | 360 nm – 2.0 um |
| Density | 2.23 g/cm3 |
| Knoop hardness | 480 kg/mm2 |
| Refractive index | 1.473 @ 587 nm |
| Stock thickness | 0.50 – 30 mm |
| Maximum blank size | 600 x 400 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
The shop-floor rules that matter here:
- Material note: sheet stock carries more thickness variation than float wafer stock, so lapping is often the first 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.
Manufacturing capability
One material, many routes: on Borosilicate Glass we also quote ultrasonic machining, dicing, drilling, double-side polishing, and multi-step drawings are the norm rather than the exception.
Typical applications
The recurring buyers of hydrophobic coating borosilicate glass: medical diagnostics (flow cells, slides, microplate bottoms, cuvette windows); scientific instruments (reference flats, cells, prism mounts, stage inserts); laboratory instruments (cuvettes, sight glasses, stir-cell windows). Background reading on the underlying material science: ISO 3585 borosilicate glass 3.3.
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 glass sandblasting, material selection guide, glass in laser systems.
Buyer questions, answered
How does Borosilicate Glass behave under heat?
CTE is 3.3 x 10^-6 /K and continuous service reaches 450 C continuous, which is what drives its use where chemical durability matters.
What does hydrophobic coating add?
Sheds water and fingerprints on touch faces. Applied by vapor-phase silanization to water contact angle > 110 degrees.
Is there a minimum order for hydrophobic coating borosilicate 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.
Specifications on this page were last reviewed by our engineering team in August 2026.