1.1 wholesale origin 3.3 float borosilicate glass sheet


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The photo showed the whole crate and whole container borosilicate glass sheet. Due to the special physical characteristics, high viscosity and poor fluidity of borosilicate glass, the production of float borosilicate glass is difficult, which is mainly reflected in its surface quality and internal quality inferior to float soda lime glass, mainly due to the unstable defects such as bubbles and stones, which makes it is difficult to control the quality stability during production. Therefore, our advantage is to selected the high quality original 3.3 float borosilicate glass sheet with good temperature resistance and pressure resistance.

The thickness is 2, 2.25, 2.6, 3, 3.3, 3.8, 4, 5, 5.5, 6, 6.5, 7.5, 8, 9, 10, 11, 12, 15 and 20mm. The dimension is 1150 × 850mm,1700 × 1150mm,1700 × 2000mm.

borosilicate glass is mainly used in household appliances, environmental and chemical engineering, lighting, solar power generation, precision instrument, semiconductor technology, medical technology and Bioengineering, safety protection (bulletproof glass).

Technical parameters of 3.3 float borosilicate glass

(1)Dimensions  1150*1700mm  1150*850mm (Maximum1700*2000mm)

(2) Thickness  2-20mm

Thickness and tolerance

2.0 ±0.2 5.0 ±0.2
2.5 ±0.2 5.5 ±0.2
3.0 ±0.2 6.0 ±0.2
3.3 ±0.2 6.5 ±0.2
3.8 ±0.2 7.5 ±0.2
4.0 ±0.2 8.0 ±0.2

(3)Cut according to customer demand to provide enhanced NET feet of glass

(4)Customers can request supply cut into small pieces

Mechanical Performance

Density   ρ               2.23+/-0.02g/cm3

Thermodynamic Performance

Thermal expansion coefficient       (0-300°C ) 3.3+/-0.1x10-6K-1

Softening point         820+/-10°C

Strain point            516+/-10°C

Caloricity              (20-100°C) 0.82KJ x (kgxK)-1

Thermal coefficient      1.2WxmxK-1

Thermal shock resistance 180K

Strengthening type       300K

Identical temperature difference 100K

Strengthening type  300 K

Maximum working temperature

Short time(<10h): 500 °C

Long time(>10h): 450°C

Chemical Performance

Water resistance    ISO719/DIN12111 HGB1/ISO720 HGA1

Acid resistance     ISO1776/DIN12116 1

Alkali resistance    ISO695/DIN52322 A2

Optical Property

Refractive index Nd:    1.47384

Transmittance spectrum curve

Electrical Property

Specific resistance lgN    8.0Ω xcm at 250°C

Dielectric dissipation fraction tanσ (1 megacycle at 20):   38x10-4

Dielectric constant    ε=4.7