Fused Silica Glass (SiO2)

Fused Silica Glass (SiO2) SDS
Fused Silica Glass (SiO2) Data Sheet

Fused Silica is a hard, high temperature pure glass. Fused Silica is used for UV and visible components. Infra-red grades of Fused Silica are available for NIR use

Transmission Range
0.18 to 2.2 μm (3 μm for IR grades)
Refractive Index
1.47012 at 4 μm (1)
Reflection Loss
7% at 0.4 μm (2 surfaces)
Absorption Coefficient
10 x 10-6 cm-1 at 1 μm
Reststrahlen Peak
n/a
dn/dT
+12.9 x 10-6/°C (2)
dn/dμ = 0
1.3 μm
Density
2.203 g/cc
Melting Point
1600°C (Softening)
Thermal Conductivity
1.38 W m-1 K-1
Thermal Expansion
0.55 x 10-6 /°C @ 300 K
Hardness
Knoop 500 with 200g indenter
Specific Heat Capacity
703 J Kg-1 K-1
Dielectric Constant
3.78 at 25 GHz
Youngs Modulus (E)
73.1 GPa
Shear Modulus (G)
31.2 GPa
Bulk Modulus (K)
36.7 GPa
Elastic Coefficients
n/a
Apparent Elastic Limit
55 MPa (7980psi)
Poisson Ratio
0.17
Solubility
Insoluble in Water
Molecular Weight
28.09
Class/Structure
Amorphous Glass

To download this as a Data Sheet or our SDS safety data sheet as a pdf, please click on the links at the top of the page or visit the Knowledge Centre.

Click to access our Guide to Silica Glass

Click to access current Fused Silica Stock

µm No
0.20 1.55051
0.25 1.50745
0.30 1.48779
0.36 1.47529
0.40 1.47012
0.45 1.46557
0.50 1.46233
0.55 1.46008
0.60 1.45804
0.65 1.45653
0.70 1.45529
0.75 1.45424
µm No
0.80 1.45332
0.85 1.44525
0.90 1.45175
1.00 1.45042
1.10 1.44920
1.20 1.44805
1.30 1.44692
1.50 1.44462
1.60 1.44342
1.70 1.44217
1.80 1.44087
1.90 1.43951
µm No
2.00 1.43809
2.20 1.43501
2.40 1.43163
2.60 1.42789
2.80 1.42377
3.00 1.41925
3.20 1.41427
3.37 1.41099
   
   
   
   

Fused Silica is the glassy form of Quartz and is thus isotropic. Fused Silica is tough and hard and has a very low expansion. Normal varieties of Fused Silica contain water which gives strong absortion in the IR. Water-free varieties of Fused Silica are available.


REFERENCES:
(1) Handbook Optical Constants, ed Palik, V1, ISBN 0-12-544420-6
(2) Toyoda & Yabe J. Phys. D: Appl. Phys.,1 6 (1983)

Welcome to Crystran Ltd

World Wide Optics Source

Visit Our Online Shop

Need something we aren’t listing? Get In Touch