304 Stainless Steel Vacuum Brazed CF Flanged Sapphire Viewports Are Rated for Both High Vacuum (HV)

• Application: Aerospace, Electronics, Medical
• Material Composition: Alumina, Al2O3
• Speciality: High Insulation, High Strength, Temperature Resistant
• Type: Ceramic Part
• Model Number: CF35 Viewport
• Flange: 304 Stainless Steel
• Glass Substrate: Sapphire
• Seal: Vacuum Brazed
• Chemical Formula: Sapphire(99.99%Al2O3)
• Density: 3.97 GM/Cc
• Hardness: 22.5 Gpa
• Modulus of Elasticity: 470 Gpa
• Flexural Strength: 690 MPa
• Compressive Strength: 2940 MPa
• Dielectric Strength: 48 AC V/mm
• Maximum Working Temperature: 1900 °c
• Coefficient of Thermal Expansion: 5.3 X 10^-6/°c
• Transport Package: Carton Package
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China

Product Description

High-purity Sapphire viewports offer a hermetically-sealed lens with upgraded optical, mechanical, and corrosion properties across a wide spectrum. Innovacera's Sapphire viewports are rated for high vacuum(HV) and ultrahigh vacuum(UHV) applications.

Using high-purity sapphire and low-expansion alloys allows these viewports to be repeatedly baked out at temperatures up to 350°C. The crystal orientation of our sapphire viewports is normal to the optical axis, also referred to as a 90° orientation. All viewports up to one inch in diameter are made with UV-grade sapphire.

 

Features:

* Single-crystal Sapphire
* Positioning/direction: 0-90°
* Ultraviolet and regular grades
* Optically polished substrate faces
* UHV compatible construction
* High Temperature rated to 350°C
* Stainless steel / NiFe construction
* Custom Solutions By Customer Request

 

 

Property	Value
Chemical Formula	Sapphire(99.99%Al2O3)
Mechanical
Density	3.97 gm/cc
Hardness	22.5 GPa
Modulus of Elasticity	470 GPa
Flexural Strength	690 MPa
Compressive Strength	2940 MPa
Poisson's Ratio	-
Fracture Toughness	-
Electrical
Dielectric Strength	48 ac V/mm
Dielectric Constant	9.3 (@ 1 MHz)
Volume Resistivity	10^14 ohm-cm
Dielectric Strength	48 ac V/mm
Thermal
Coefficient of Thermal Expansion	5.3 x 10^-6/°C
Thermal Conductivity	41 W/(m*K)
Specific Heat	0.75 x10^3 J/(Kg*K)
Shock Resistance	-
Maximum Working Temperature	1900 °C
Optical
Index of Refraction	1.762
Birefringence	-
Transmission Band	-