Sapphire Sheets

Flat / Curved Windows

Synthetic Sapphire crystal is a high strength, durable, scratch-resistant transparent window material, which is available in production volumes for large Aerospace sapphire optical and protective window systems, Semiconductor process chamber windows, and endless possible applications.

Sapphire windows are used in Semiconductor process chambers as well as many other high vacuum applications.  Process environments that would rapidly erode quartz windows do not affect single crystal sapphire.  While the service life of quartz windows can be limited, in many cases sapphire windows can be used indefinitely.

Sapphire is also used in aerospace to protect onboard imaging, and sensing flight vision systems while allowing broadband transmission. Sapphire is compatible with Ultraviolet, Visible, and mid-wave infrared sensors.

Sapphire is extremely hard and abrasion-resistant which makes it the first choice for protection against high-velocity projectiles.  More information about this specific use and the properties that make Sapphire the first choice for Safety Windows.

Flat Windows - The world's largest sapphire windows available

Sapphire sheets are manufactured using Edge Fed Growth technology, a process that grows single-crystal sapphire to near-net shapes, thus reducing post-growth processing. EFG™ technology enables the production of large windows (1 ft x 3 ft), the shape and size of a sapphire crystal to be controlled during its formation.

Standard Size Range
Thickness x Width Thickness Range
9" x 26" (228.6mm x 660.4mm) .100" - .300" (2.54mm x 7.62mm)
12" x 20" (304.8mm x 508mm) .100" - .300" (2.54mm x 7.62mm)
6" x 6" (152.4mm x152.4mm) .025" - .300" (0.635mm x 7.62mm)
Sheet size based on area
Area (Sq) Length (min-max) Width (min-max) Thickness
1 - 4 0.5 - 8 0.5 - 8 0.039 - 0.315
4 - 16 1 - 12 1 - 12 0.039 - 0.125
4 - 16 1 - 16 1 - 12 0.125 - 0.315
16 - 36 1 - 12 1 - 12 0.039 - 0.125
16 - 36 1 - 24 1 - 12 0.125 - 0.300
36 - 81 1.5 - 24 1.5 - 12 0.125 - 0.300
81 - 234 1.5 - 24 1.5 - 12 0.125 - 0.300
90 - 216 9.1 - 18 9.1 - 12 0.125 - 0.300

All Dimensions shown are inches

Curved Windows

Saint-Gobain has developed the process to produce Curved Sapphire windows. Curved sapphire is available in radial sizes ranging from 2” Radius to 25” Radius with chord lengths from 2.5” to 9” and thicknesses from .04” to .30” (illustration below).
Curved Single (Al2O3) Sapphire crystal
Curved Sapphire Dimensional Illustration
 

Applications

Sensor Windows Semiconductor Processing

Viewports and sight windows

Vehicle Safety Windows

LiDAR sensor protection

Micro-wave guide barriers

Forward-Looking Infra-Red (FLIR) windows

Electro-Optic (EO) windows

Laser designator / range-finder windows

Infrared windows for spectroscopic analysis

Optical sensors for industrial processes

Mail sorting optical scanner windows

Heat/smoke detection windows

Chamber windows

High vacuum chambers

End effectors

Gas diffusion plates

Focus rings

Showerheads

E-Chucks

Articles
Sapphire-The-Ultimate-High-Performance-Manufacturing-Material.pdf

In this article, we outline the properties of sapphire and take a look at how Edge-Fed-Growth is enabling the production of large and complex sapphire

PDF | 532.89 KB
Sapphire-The-Ultimate-High-Performance-Manufacturing-Material
Brochures
Sapphire-Properties.pdf

Sapphire (Al2O3) Material Properties Brochure

PDF | 1.21 MB
Sapphire-Properties
Data Sheets
Sapphire Sheets

Sapphire Sheets EFG™ and CLASS®

PDF | 517.34 KB
Sapphire-Sheets