CHAT EMAIL

Country/Region
- We have set your country/region to United States
  
  You can change this selection at any time, but products in your cart, saved lists, or quote may be removed if they are unavailable in the new shipping country/region.
  
  Select Your Country/Region
Hello, My Account
- Log In
  
  New to EO? Register.
  
  Welcome !
  
  My Account
  Access Dashboard
  
  My Profile
  Update My Profile
  
  Payment & Shipping
  Address Book, Tax Certificates
  
  Web Orders
  View Past Orders
  
  Saved Lists
  Saved Items for Later
  
  Log Out

See all 44 Products in Family

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

125mm Diameter x 6.5mm Thickness, Uncoated, BOROFLOAT® Window

TECHSPEC BOROFLOAT Borosilicate Windows

Stock #45-685

$44.50

Qty 1-5
$44.50

Qty 6
$35.60

Volume Pricing
Request a Quote

eDrawing: eprt IGES PDF Drawing STEP: step

+ Add to Saved List

Compare

Abbe Number (v_d):

65.41

Bevel:

Protective as needed

Clear Aperture (%):

≥90

Diameter (mm):

125.00 ±0.5

Thickness (mm):

6.50

Coating:

Uncoated

Coefficient of Thermal Expansion CTE (10^-6/°C):

3.25

Density (g/cm³):

2.2

Edges:

Ground Edges

Index of Refraction n_d:

1.472

Operating Temperature (°C):

1 hour @ 500; >100 hours @ 450

Poisson's Ratio:

0.2

Stress-Optical Coefficient (mm²/N):

4 x 10^-6

Substrate:

BOROFLOAT^®

Surface Flatness:

4 - 6λ

Surface Quality:

80-50

Thickness Tolerance (mm):

±0.2

Transformation Temperature (°C):

525

Transmission (%):

Type:

Protective Window

Wavelength Range (nm):

350 - 2000

Young's Modulus (GPa):

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

Low Coefficient of Thermal Expansion
Visible to Near Infrared Transmission
High Resistance to Thermal Shock

BOROFLOAT® Borosilicate Windows are ideal for high temperature and harsh environment applications. Unlike common borosilicate that is drawn flat, BOROFLOAT® is produced by a float technique that yields superior surface flatness — typically 4 - 6λ per inch. BOROFLOAT® is about three times more resistant to thermal shock than standard soda lime glass.

Can’t find what you need? Get a quick custom quote.