Product Description
Thin Aluminosilicate Glass for Screen Protector Applications
1. Product Title
Ultra Thin Medium Aluminosilicate Float Glass Sheet 0.25-0.40mm for
Display Cover Glass
2. Product Keywords
medium aluminosilicate glass, ultra thin glass sheet,
aluminosilicate float glass, ultra clear glass, thin glass sheet,
0.25mm glass, 0.28mm glass, 0.33mm glass, 0.40mm glass, display
glass, display cover glass, display substrate glass, electronic
glass, thin display glass, chemically strengthenable glass,
chemically strengthened glass, float glass sheet, electronic
display glass
3. Short Description
CHIYAN-M2 is an ultra clear medium aluminosilicate float glass
sheet available in 0.25-0.40mm thicknesses, featuring high optical
transmittance, controlled flatness and chemical strengthening
capability for display, electronic and optoelectronic applications.
4. Product Overview
CHIYAN-M2 is an ultra clear, ultra thin medium aluminosilicate float glass developed for applications requiring thin glass, high optical
transmittance, good flatness and chemical strengthening capability.
The 0.25-0.40mm series is manufactured using the float glass process and is available in 0.25mm, 0.28mm, 0.33mm and 0.40mm thicknesses.
CHIYAN-M2 is designed for applications including display cover glass, display substrates, electronic,
microelectronic and optoelectronic applications.
The standard supply size is 1300 × 1100mm, with other dimensions available according to customer
requirements.
The glass can be considered for subsequent chemical strengthening
and other downstream processing according to the customer's
application and processing requirements.
5. Key Features
Ultra Thin Glass
Available in thicknesses from 0.25mm to 0.40mm, including 0.25mm, 0.28mm, 0.33mm and 0.40mm.
Ultra Clear Optical Performance
Optical transmittance is specified at ≥91.5% according to GB/T 2680-2021.
Medium Aluminosilicate Composition
CHIYAN-M2 is a medium aluminosilicate glass developed for applications requiring specialized glass properties
in display, electronic and optoelectronic fields.
Good Flatness
The specified pre-strengthening flatness for the 0.25-0.40mm series
is:
≤0.5% (h/L)
Float Glass Manufacturing Process
Manufactured using the float glass process, providing a flat and smooth glass surface suitable for subsequent
processing.
6. Available Thicknesses
| Thickness | Availability |
| 0.25mm | Available |
| 0.28mm | Available |
| 0.33mm | Available |
| 0.40mm | Available |
7. Technical Specifications
| Item | Specification |
| Product Name | CHIYAN-M2 |
| Glass Type | Ultra Clear Medium Aluminosilicate Float Glass |
| Manufacturing Process | Float Glass |
| Thickness Range | 0.25-0.40mm |
| Available Thicknesses | 0.25 / 0.28 / 0.33 / 0.40mm |
| Standard Size | 1300 × 1100mm |
| Size Tolerance | ±5mm |
| Thickness Tolerance | ±0.05mm |
| Thickness Difference | ≤0.04mm |
| Diagonal Difference / Squareness | ≤0.5% |
| Pre-strengthening Flatness | ≤0.5% (h/L) |
| Optical Transmittance | ≥91.5% |
8. Physical Properties
| Property | Unit | Reference Value |
| Density | g/cm³ | 2.48 ± 0.01 |
| Refractive Index | - | 1.51 ± 0.01 |
| Young's Modulus | GPa | 73.0 ± 0.5 |
| Optical Transmittance | % | ≥91.5 |
| Volume Resistivity | lg(Ω·cm) | ≥10.0 |
| Dielectric Constant | - | ≥7.0 |
| Softening Point | ºC | 750 ± 10 |
| Strain Point | ºC | 516 ± 5 |
| Annealing Point | ºC | 562 ± 5 |
| Thermal Conductivity | W/(m·K) | 0.682 ± 0.10 |
| Thermal Expansion Coefficient | ×10/ºC | 85 ± 5 |
| Photoelastic Constant | nm/cm/MPa | 27.0 ± 0.2 |
| Poisson's Ratio | - | 0.23 ± 0.02 |
| Vickers Hardness | HV | 610 ± 10 |
9. Chemical Strengthening Capability
CHIYAN-M2 can be chemically strengthened through an ion-exchange
process.
The product specification provides reference chemical strengthening
parameters for different temperatures and strengthening levels.
Reference strengthening grades include:
| Time | 390°C | 400°C | 410°C | 420°C | 420°C |
CS
(MPa) | DOL
(um) | CS
(MPa) | DOL
(um) | CS
(MPa) | DOL
(um) | CS
(MPa) | DOL
(um) | CS
(MPa) | DOL
(um) |
| 1.5H | ≥650 | ≥2.0 | - | - | - | - | - | - | - | - |
| 2H | ≥700 | ≥5.0 | - | - | - | - | - | - | - | - |
| 3H | - | - | ≥650 | ≥7.0 | ≥650 | ≥8.0 | ≥650 | ≥9.0 | ≥650 | ≥10.5 |
| 4H | - | - | ≥600 | ≥8.0 | ≥600 | ≥9.0 | ≥600 | ≥11.0 | ≥600 | ≥12.5 |
| 5H | - | - | ≥600 | ≥9.0 | ≥600 | ≥10.0 | ≥600 | ≥11.5 | ≥600 | ≥13 |
The specification provides reference values for surface compressive stress (CS) and depth of layer (DOL) under different strengthening conditions.
Note: The chemical strengthening data are process reference values.
Actual strengthening results may vary depending on the glass
processing conditions and are not intended to serve as guaranteed
production values.
10. Chemical Stability
| Test | Test Condition | Reference Value |
| Acid Resistance - HCl | 5% HCl, 95±0.5ºC, 24h | ≤0.05mg/cm² |
| Acid Resistance - HF | 10% HF, 20±0.5ºC, 20min | ≤9.00mg/cm² |
| Alkali Resistance - NaOH | 5% NaOH, 95±0.5ºC, 6h | ≤0.35mg/cm² |
11. Applications
CHIYAN-M2 is designed for applications including:
Display Applications
- Display cover glass
- Display substrates
Electronic Applications
- Electronic applications
- Microelectronic applications
- Optoelectronic applications
The product is specifically developed for display cover glass and
display substrate applications.
12. Quality & Appearance
The effective quality area is defined as the area 10mm outside all edges.
The product quality specification includes requirements for:
- Scratches
- Bubbles
- Stones and inclusions
- Tin spots
- Edge chips
- Cracks
- Surface contamination
Quality inspection is carried out according to the applicable
product quality specifications and sampling requirements.
13. Processing
CHIYAN-M2 is supplied as float glass sheets / raw glass sheets for subsequent customer processing.
Depending on the customer's application and processing
requirements, the glass may be considered for:
- Chemical strengthening
- Cutting
- CNC processing
- Other downstream processing
CNC processing parameters are available as reference information
upon request.
14. Packaging
Standard packaging includes:
- Wooden frame / wooden crate packaging
- Interleaving paper
- Desiccant
- Glass protection against breakage
Reference packaging quantities vary according to glass thickness.
| Thickness | Reference Quantity |
| 0.25mm | 920 pcs/box |
| 0.28mm | 1020 pcs/box |
| 0.33mm | 1050 pcs/box |
| 0.40mm | 900 pcs/box |
Note: Packaging quantities are for reference only and may vary according
to actual packing conditions.
15. Storage
Recommended storage conditions:
- Temperature: ≤30ºC
- Humidity: ≤65%
- Avoid condensation on the glass surface
The quality guarantee period is 3 months from the delivery date under the specified storage conditions.
16. Why Choose CHIYAN-M2?
Ultra Thin Thickness
Available from 0.25mm to 0.40mm for applications requiring thin glass sheets.
High Optical Transmittance
Optical transmittance of ≥91.5%.
Medium Aluminosilicate Composition
Designed for display, electronic and optoelectronic applications.
Controlled Flatness
Pre-strengthening flatness of ≤0.5% (h/L).
Chemical Strengthening Capability
Reference ion-exchange process parameters are available for
different strengthening conditions.
Multiple Thickness Options
Available in 0.25mm, 0.28mm, 0.33mm and 0.40mm.
Flexible Sheet Dimensions
Standard sheet size is 1300 × 1100mm, with other dimensions available for discussion according to
customer requirements.
17. FAQ
Q1: What thicknesses are available?
CHIYAN-M2 is available in 0.25mm, 0.28mm, 0.33mm and 0.40mm thicknesses.
Q2: What is the standard sheet size?
The standard supply size is 1300 × 1100mm. Other dimensions can be discussed according to customer
requirements.
Q3: What is the optical transmittance?
The specified optical transmittance is ≥91.5%.
Q4: Can CHIYAN-M2 be chemically strengthened?
Yes. The product specification provides reference chemical
strengthening process parameters for different strengthening
conditions.
Q5: Is CHIYAN-M2 supplied as raw glass sheet?
Yes. CHIYAN-M2 is supplied as float glass sheets / raw glass sheets for subsequent customer processing and applications.
Q6: What is the thickness tolerance?
The thickness tolerance for the 0.25-0.40mm series is ±0.05mm.
Q7: What is the flatness?
The specified pre-strengthening flatness is ≤0.5% (h/L).
Q8: Can you provide customized sizes?
Yes. The standard size is 1300 × 1100mm, and other dimensions can be discussed according to customer
requirements.
Q9: What is the minimum order quantity?
MOQ: To be discussed according to thickness, size and order
requirements.
18. B2B Inquiry Call-to-Action
Looking for ultra thin medium aluminosilicate glass for your
display or electronic application?
Please send us your requirements:
Thickness + Size + Quantity + Application
Our team can evaluate the suitable CHIYAN-M2 specification and
provide a quotation accordingly.
Hunan Xinghuai New Material Technology Co., Ltd.
Sophia
CHIYAN-M2 | Ultra Clear Medium Aluminosilicate Float Glass.
