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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Square, Uncoated, B270 Window

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Stock #64-087
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Qty 1-5
£22.95
Qty 6+
£18.53
Volume Pricing
Request Quote
Abbe Number (vd):
58.3
Bevel:
Protective as needed
Clear Aperture CA (mm):
18.00 x 18.00
Dimensions (mm):
20.00 x 20.00
Thickness (mm):
2.00
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
9.4 (+20 to +300°C)
Density (g/cm3):
2.56
Edges:
Fine Ground
Index of Refraction nd:
1.523
Knoop Hardness (kg/mm2):
500
Poisson's Ratio:
0.22
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness:
Surface Quality:
60-40
Type:
Protective Window
Wavelength Range (nm):
360 - 2700
Young's Modulus (GPa):
71.5
Length (mm):
20.00
Width (mm):
20.00

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

  • Large Selection of Sizes
  • Available Uncoated or with a MgF2 Anti-Reflection Coating
  • Custom Sizes Available for Volume OEM Requirements

TECHSPEC® B270 Windows are ideal for commercial applications requiring a thin substrate. Available uncoated or with a MgF2 Anti-Reflection coating, these windows are often used as a protective element between two environments. Custom sizes and coatings are available for OEM applications.

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