Borosilicate glass from GVB

We have the right material for your application

You need components made of Borosilicate glass 3.3?

GVB offers you a wide range of cylindrical and flat borosilicate glasses. In addition, we also supply components such as standard ground joints and threads in a wide variety of designs.

Our borosilicate glass 3.3 is food safe, extremely sturdy, impact and scratch resistant. It is characterised by extraordinary temperature resistance and can withstand even strong temperature changes. 

Individual advice?

Our team of experts will help you.

Thermal, physical, mechanical and electrical properties

Subject Value Unit
Mean linear expansion coefficient
(20 - 300 °C according to ISO 7991, DIN 52328)
3,3 - 10 ^-6
K ^-1
Transformation temperature Tg (ISO 7884-8)
525
°C

Viscosity temperatures

Subject Value Unit
10 ^14.7 dPa -s (lower cooling temperature, ISO 7884-7)
510
°C
10 ^13 dPa -s (upper cooling point, ISO 7884-7)
560
°C
10 ^7.6 dPa -s (softening temperature, ISO 7884-2, 7884-6)
825
°C
10 ^4 dPa -s (processing temperature, ISO 7884-2, 7884-5)
1260
°C
Short-term recommended maximum service temperature
500
°C
Density at (20°C)
2,23
g/cm ^3
Modulus of elasticity
64 - 10 ^3
MPa
Poisson's ratio
0,20
Thermal conductivity (20 - 100 °C)
1,2
W - m ^-1 - K ^-1
Specific heat capacity (20 - 100 °C)
0,98 - 10 ^3
J - kg - K ^-1
Spec. electrical resistance in dry environment (20 °C)
10 ^13 - 10 ^15
Ohm - cm
Dielectric constant (20 °C, 1 MHz)
4,6
Dielectric loss factor
4,9 - 10 ^13

Chemical properties

Water resistance (according to ISO 719)
HGB 1
Acid resistance (according to ISO 1776)
Class S1
Alkali resistance (according to ISO 695)
Class A2

Contact
borosilicate glass experts now

Mikko van Dongen

Product management borosilicate glass & colored glass
Mikko.dongen@g-v-b.de
Phone: +49 2406 665588-19
Mobile: +4917647360729

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