BOROFLOAT® 33 - BOROSIICATE GLASS

BOROFLOAT® 33 borosilicate glass is manufactured by Schott, and is globally recognized for high-quality, multi-functional float glass. Its wide range of outstanding product properties, such as its high thermal and chemical resistance, its excellent transparency and its good surface quality, allow access to new and high tech special glass applications.

BOROFLOAT® has proven itself in many traditional applications and there is an increasing area of usage in new and technically sophisticated special glass applications such as electrophoresis, microfluidics and photovoltaics.

BOROFLOAT®: SCHOTT 33 Borosilicate Glass
Glass Code: Schott
Borofloat® 33
Type
Borosilicate
Color
Clear
Principal Use
Industrial

Thermal Expansion

Multiply by 10-7 cm/cm/°C

0 -300°C
32.5
Maximum Operating Tempature °C
Short Term < 10 Hours
500
Long Term > 10 Hours
450

Thermal Shock Resistance

(20x20 cm2) data is Approximately

< 3.8mm Thick
175K
5.0 - 5.5mm Thick
160K
6.5 - 150mm Thick
150K

Viscosity Data

(This data is subject to normal manufacturing variations.)

Strain Point °C
518
Annealing Point °C
560
Softening Point °C
820
Working Point °C
1270
Density q/cm3
2.2
Young's Modulus (64 Kn/mm2)
64
Poisson's Ratio
0.2
Refractive Index
435.8 nm
1.480
546.1nm
1.473
589.3 nm
1.471
1.469
Stress-Optical Coefficient, in MPa-1 K
4.0 x 1

 

Key Notes:

  • Available in thickness from 0.7mm to 25.4mm
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