General Non Alkaline Earth Borosilicate Glass

Want to keep this datasheet? Save it now in your required format


Non Alkaline Earth Borosilicate Glass is chemically durable and has the lowest thermal expansion coefficient in the group of commercial glasses. Thus, it is the gass to use when good thermal resistance, high chemical durability and high light transmission are key. This glass type is also referred to as borosilicate glass 3.3.

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





23.0 °C

2.2 - 2.8 g/cm³

Show Material materials with Density of 2.2 - 2.8 g/cm³



Elastic modulus

23.0 °C

63 - 64 GPa

Show Material materials with Elastic modulus of 63 - 64 GPa

Poisson's ratio

23.0 °C

0.2 [-]

Show Material materials with Poisson's ratio of 0.2 [-]



Annealing temperature

560 - 640 °C

Show Material materials with Annealing temperature of 560 - 640 °C

Coefficient of thermal expansion

300.0 °C

3.25E-6 - 4.6E-6 1/K

Show Material materials with Coefficient of thermal expansion of 3.25E-6 - 4.6E-6 1/K

Glass transition temperature

525 - 530 °C

Show Material materials with Glass transition temperature of 525 - 530 °C

Vicat softening temperature

820 - 840 °C

Show Material materials with Vicat softening temperature of 820 - 840 °C



Dielectric constant

23.0 °C

4.6 - 5.8 [-]

Show Material materials with Dielectric constant of 4.6 - 5.8 [-]

at 1MHz

Loss tangent

23.0 °C

1E-3 - 3.7E-3 [-]

Show Material materials with Loss tangent of 1E-3 - 3.7E-3 [-]

at 1MHz



Refractive index

1.47 [-]

Show Material materials with Refractive index of 1.47 [-]