# Optical Grade Saphire Glass Window IR Optical Sapphire Window with ITO Coating

> Optical Grade Saphire Glass Window IR Optical Sapphire Window with ITO Coating — an ITO-coated glass: 0.5mm/1mm/2mm/3mm or Customized thick. Specs, RFQ…

- Page: https://machiningglass.com/products/optical-grade-saphire-glass-window-ir-optical-sapphire-window-with-ito-coating/
- SKU: MG-6A1D55
- Category: ITO / FTO Conductive Glass > ITO-Coated Glass & Substrates
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Optical-Grade-Saphire-Glass-Window-IR-Optical-Sapphire-Window-with-ITO-Coating.webp
- Updated: 2026-10-24

Application: Building, Furniture, Home Appliance, Electronics & Instruments. Model: SD-889.

## Overview

Optical Grade Saphire Glass Window IR Optical Sapphire Window with ITO Coating is an ITO-coated glass. Listed geometry: size Customized According to Customer Drawings, thickness 0.5mm/1mm/2mm/3mm or Customized, flat shape. Optical / electrical data: transmittance >90%. Flatness High Class. Listed for Protective Windows or Viewports applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

## Specifications

| Parameter | Value |
| --- | --- |
| Shape | Flat |
| Transmittance | >90% |
| Flatness | High Class |
| Application | Protective Windows or Viewports |
| Usage | Building, Furniture, Home Appliance, Electronics & Instruments |
| Model NO. | SD-889 |
| Appearance | Flat Tempered |
| Standard | GB/T 9963-1998 |
| Steel Degree | Tempered Glass |
| Thickness of Flat Tempered Glass | 0.5-19mm |
| Thickness of Curve Tempered Glass | Customized |
| Fragment State | Ⅱ |
| Technics | Chemical Tempered |
| Glass Silk Screen Color | Black, Gray, White, Other Colors. |
| Glass Raw Materials | Sapphire Glass |
| Glass Thickness | 0.5mm/1mm/2mm/3mm or Customized |
| Glass Shapes | Square, Round, Irregular Graphics, (Customized) |
| Glass Size | Customized According to Customer Drawings |
| Edge Processing | Straight, Round, Beveled |
| Surface Treatment | Ar/Af Coating |
| Minimum Order Quantity | 20 PCS |
| Drilling | Acceptable |
| Shipping Way | Commercial Express, Sea Shipping |
| Hardness | >7h |
| Sapphire window feature | *Extreme Surface Hardness Chemical Resistance |
| Packaging | Each glass use double sided protective film and then packed by craft paper then into a wooden crate. |
| Supplier | DONGGUAN SAIDA GLASS CO.,LTD |

## Technical data

| Parameter | Value |
| --- | --- |
| Transmission Range | 0.17 to 5.5 μm |
| Refractive Index | No 1.75449; Ne 1.74663 at 1.06 μm (1) |
| Reflection Loss | 14% at 1.06 μm |
| Absorption Coefficient | 0.3 x 10-3 cm-1 at 2.4 μm (2) |
| Reststrahlen Peak | 13.5 μm |
| dn/dT | 13.1 x 10-6 at 0.546 μm (3) |
| dn/dμ = 0 | 1.5 μm |
| Density | 3.97 g/cc |
| Melting Point | 2040°C |
| Thermal Conductivity | 27.21 W m-1 K-1 at 300K |
| Thermal Expansion | 5.6 (para) & 5.0 (perp) x 10-6/K * |
| Hardness | Knoop 2000 with 2000g indenter |
| Specific Heat Capacity | 763 J Kg-1 K-1 at 293K (4) |
| Dielectric Constant | 11.5 (para) 9.4 (perp) at 1MHz |
| Youngs Modulus (E) | 335 GPa |
| Shear Modulus (G) | 148.1 GPa |
| Bulk Modulus (K) | 240 GPa |
| Elastic Coefficients | C11=496 C12=164 C13=115 C33=498 C44=148 |
| Apparent Elastic Limit | 77.86300 MPa (45,000 psi) |
| Poisson Ratio | 0.25 |
| Solubility | 98 x 10-6 g/100g water |
| Molecular Weight | 101.96 |
| Class/Structure | Trigonal (hex), R3c |

## What to specify when you request a quote

- **Sheet resistance** — state the target sheet resistance and its tolerance.
- **Transmittance** — listed as “>90%”; give the minimum visible transmission at the resistance you need.
- **Substrate and thickness** — listed as “0.5-19mm”; name the base glass (soda-lime, borosilicate, alkali-free, quartz) and thickness.
- **Size and cutting** — listed as “Customized According to Customer Drawings”; give the cut size and whether edges are seamed.
- **Pattern or electrodes** — send a drawing for any etched pattern, bus bar or electrode.

## Engineering guides for this part

For material grades and coating options, see [ITO Coated Glass Material Options for Optoelectronic Components](https://machiningglass.com/materials/ito-coated-glass-material-options-for-optoelectronic-components/). How parts like this are machined and finished is covered in [ITO Coating Process: How Conductive Glass is Made for Optoelectronics](https://machiningglass.com/capabilities/ito-coating-process-how-conductive-glass-is-made-for-optoelectronics/). For an application example, read [Integrating ITO Coated Glass into Appliance Sensor Interfaces](https://machiningglass.com/applications/integrating-ito-coated-glass-into-appliance-sensor-interfaces/). Before sending a drawing, check [Specifying Coatings for Custom Glass Windows and Substrates](https://machiningglass.com/resources/specifying-coatings-for-custom-glass-windows-and-substrates/). A related standard product is [ITO-Coated Glass Substrate for Optoelectronics](https://machiningglass.com/products/ito-coated-glass-substrate-for-optoelectronics/).

## FAQ

### What sizes and thicknesses are available?

The listing gives size Customized According to Customer Drawings, thickness 0.5mm/1mm/2mm/3mm or Customized. Custom outlines and thicknesses are made to drawing; state the tolerance you need.

### What optical or electrical performance does it have?

Listed values: transmittance >90%. Confirm the values at your operating wavelength, angle and temperature when you request a quote.

### Where is this ITO-coated glass used?

Listed applications: Protective Windows or Viewports.

### What should I include in a quote request?

Include sheet resistance, transmittance, substrate and thickness, size and cutting and pattern or electrodes, plus quantity and a drawing if the part is custom.

## Request a quote

Send drawings, tolerances and quantity: https://machiningglass.com/contact/?rfq_product_id=8081#mg-rfq

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Source: Custom Precision Glass Machining — https://machiningglass.com/