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 |
Getting the drawing right
Three items decide most of the cost and lead time on this work:
- 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.
Capabilities and limits
One material, many routes: on Borosilicate Glass we also quote coring, ultrasonic machining, edge grinding, sandblasting, and multi-step drawings are the norm rather than the exception.
Application context
hydrophobic coating borosilicate glass shows up across 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.
Useful companion pages: glass sandblasting, material selection guide, machining tolerance guide.
Buyer questions, answered
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.
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 Borosilicate Glass parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Sheet stock carries more thickness variation than float wafer stock, so lapping is often the first step.
Specifications on this page were last reviewed by our engineering team in September 2026.