Customized
Chemically Strengthened
Glass
Ion-exchange hardened cover glass engineered for extreme durability. Custom shapes, coatings, and tolerances -- from rapid prototype to high-volume production. Trusted by OEM/ODM buyers across North America and Europe.
- Vickers Hardness ≥ 620 HV
- Compressive Stress ≥ 700 MPa
- RoHS & REACH Compliant
- 24h Engineering Response
Ion-Exchange Strengthening:
The Science Behind the Durability
Chemically strengthened glass undergoes a controlled ion-exchange process -- immersed in a molten potassium salt bath at ~400°C, sodium ions near the glass surface are replaced by larger potassium ions. This creates a deep compressive stress layer (DOL) that dramatically resists crack propagation.
The result: a cover glass that is 4-8× stronger than conventional annealed glass of the same thickness, while maintaining optical clarity, touch sensitivity, and the ability to be post-processed into complex geometries -- critical for medical, industrial, and smart device applications.
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1Glass Substrate PreparationPrecision cutting, edge grinding, and surface polishing to drawing tolerances (±0.05 mm).
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2Ion-Exchange Bath (KNO₃ Salt)Controlled immersion at 380-430°C. DOL and CS values tuned per application requirements.
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3Post-Treatment & CoatingAR, AG, AF, or ITO coatings applied in cleanroom; silk-screen printing available.
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4100% Final InspectionSpectral analysis, surface defect scanning, and dimensional verification before shipment.
Performance vs. Standard Glass
Unlike thermally tempered glass, chemically strengthened glass can be cut and drilled before strengthening -- enabling complex hole patterns, notches, and custom geometries without compromising the stress layer integrity.
Full Technical Specifications
All parameters are verifiable via our QC documentation. Custom spec adjustments available -- submit your drawing for engineering review.
Mechanical Properties
| Property | Value |
|---|---|
| Compressive Stress (CS) | ≥ 700 MPa |
| Depth of Layer (DOL) | 40-100 µm |
| Vickers Hardness | ≥ 620 HV |
| Flexural Strength | ≥ 600 MPa |
| Young's Modulus | ~70 GPa |
| Density | 2.46 g/cm³ |
Optical Properties
| Property | Value |
|---|---|
| Transmittance (visible) | ≥ 91% |
| Refractive Index (nD) | 1.51 ± 0.01 |
| Haze | < 0.2% |
| Surface Reflectance | ~8% (uncoated) |
| AR Coated Reflectance | < 0.5% per surface |
| Spectral Range | 380-2500 nm |
Dimensional & Surface
| Property | Value |
|---|---|
| Thickness Range | 0.3 - 6.0 mm |
| Thickness Tolerance | ± 0.05 mm |
| Dimensional Tolerance | ± 0.05 mm |
| Surface Roughness (Ra) | < 0.5 nm |
| Flatness | < 0.1 mm/100 mm |
| Edge Finish | Ground / Polished / Chamfered |
Thermal & Chemical
| Property | Value |
|---|---|
| Operating Temp. Range | -40°C ~ +300°C |
| Thermal Expansion (CTE) | ~8.5 × 10⁻⁶/K |
| Thermal Conductivity | ~1.0 W/(m·K) |
| Acid Resistance | Class 1 (ISO 8424) |
| Alkali Resistance | Class A2 (ISO 695) |
| Hydrolytic Resistance | Class HGB 1 (ISO 719) |
Available Coatings
Compliance & Certifications
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ISO 9001:2015Quality Management System
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RoHS 2011/65/EURestriction of Hazardous Substances
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REACH (EC 1907/2006)Chemical Safety for EU Market
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Full Material DeclarationCOC, MSDS, test reports available
Engineered to Your Exact Drawing
Submit your DXF/DWG/PDF drawing. Our engineering team reviews feasibility within 24 hours and provides a detailed quotation with material recommendations.
Shape & Geometry
Rectangular, circular, oval, D-cut, custom polygon. Holes, notches, slots -- any 2D profile from your drawing.
Surface Coatings
AR, AG, AF, ITO, DLC, or multi-stack combinations. Single-side or double-side. Cleanroom deposition for Class 100 quality.
Printing & Masking
Automated silk-screen printing for logos, color frames, and decorative masks. Pantone matching available. UV-curable inks.
Volume & Packaging
Prototype (1-50 pcs) to mass production (100,000+ pcs/month). ESD-safe tray, interleaf paper, or custom packaging per your spec.
Available Glass Substrates
Where Our Glass Performs
Trusted across demanding sectors where optical clarity, mechanical integrity, and regulatory compliance are non-negotiable.
Medical Devices
Touchscreen panels for patient monitors, endoscopy camera windows, diagnostic equipment displays. Biocompatible, sterilization-resistant.
- IEC 60601 compatible materials
- Autoclave-safe options available
- Full material traceability
Industrial HMI & Control
Rugged touchscreen overlays for factory automation, PLC panels, and harsh-environment HMI systems requiring IP65+ sealing.
- -40°C to +85°C operating range
- Chemical & solvent resistant
- Custom sealing groove machining
Smart Home Devices
Touch control panels for smart switches, thermostats, security keypads, and IoT display modules requiring premium aesthetics.
- ITO touch integration available
- Silk-screen color frame printing
- Anti-fingerprint coating option
Automotive Displays
HUD combiner glass, center console displays, and ADAS camera windows. AEC-Q100 compatible material traceability.
- UV-stable coatings (10yr lifespan)
- Curved glass forming available
- IATF 16949 documentation support
Wearables & IoT
Smartwatch faces, fitness tracker displays, and AR/VR lens covers requiring extreme thinness with maximum scratch resistance.
- 0.3 mm minimum thickness
- Sapphire-equivalent hardness
- Complex 2.5D shaping available
Scientific Instruments
Optical windows, flow cell covers, and spectrometer viewports requiring precise flatness, transmittance, and chemical inertness.
- Spectral analysis with each batch
- Flatness < λ/4 (632.8 nm)
- Lot traceability documentation
We Think Like Your
Procurement Team
Winson Optics was built with a unique insight: our partner Iris spent 12 years as a professional buyer before joining us as a manufacturer. She has sat on your side of the table -- and understands the hidden costs of supply chain uncertainty, unclear specifications, and unreliable quality.
That procurement mindset is now embedded in our production DNA. Every batch ships with the documentation your compliance team needs, every quote includes the technical detail your engineers demand, and every delivery meets the schedule your operations team plans around.
Talk to Our Engineering Team"Having reviewed thousands of supplier submissions, I know exactly what makes a buyer confident -- and what creates doubt. At Winson, we eliminate the doubt before you even ask."
Chief Auditor QC
100% inspection with spectral analyzer, surface scanner, and CMM. Every piece, every batch.
Full Documentation Pack
COC, MSDS, test reports, and material traceability certificates shipped with every order.
24h Engineering Response
Submit your drawing today, receive a detailed DFM review and quote by tomorrow. No generic auto-replies.
Supply Chain Transparency
Raw material sourcing disclosed. No hidden sub-contractors. Full visibility from substrate to finished part.
Dedicated Account Manager
One point of contact from NDA to mass production. English-speaking team for NA/EU time zones.
Prototype → Mass Production
Same factory, same tooling, same QC protocol from your first 10 samples to your 100,000-piece production run.
From Drawing to Delivery in 4 Steps
A transparent, engineer-led process designed to eliminate supply chain uncertainty.
Submit Drawing
Upload your DXF/DWG/PDF or describe your requirements. NDA signed same day upon request.
DFM Review & Quote
Engineering team reviews feasibility, recommends materials, and provides a detailed itemized quote within 24 hours.
Prototype Approval
Rapid prototyping (7-15 days). Physical samples shipped with full QC report for your engineering sign-off.
Mass Production
Scalable production with 100% inspection. Full documentation pack and on-time delivery with live shipment tracking.
Request a Technical Quote
Fill in your requirements below. Our engineering team will review your specifications and respond with a detailed quotation and DFM feedback within 24 business hours.
Ready to Eliminate Supply Chain Uncertainty?
Join 500+ global OEM buyers who trust Winson Optics for precision, compliance, and on-time delivery.