General:

Glass type

Borosilicate Glass 3.3

Manufacturing

Float process

Color

Clear

Sizes:

Thickness (mm)

1.50

2.25

3.00

3.80

5.00

6.00

7.50

2.00

2.75

3.30

4.00

5.50

6.50

8.00

Thickness tolerance

±0.2

±0.3

Dimension

600mmx1200mm(max.800mm x2000mm)

Net sized glass of strengthening can be suppliedGlass of cut size is available

Size tolerance

L≤1m

1m<L≤2m

±1mm

±2mm

Physical Properties:

Density (at 25°C)

2.23±0.02g/cm 3

Modulus of elasticity

68kN/mm 2

Thermal Date:

Coefficient of expansion (20-300°C)

3.3±0.1 x10 -6

Softening point

820±10°C

Strain point

516±10°C

Thermal conductivity at 90°C

1.2W/mk

Caloricity

(20-100°C) 0.82KJ x(kg xK) -1

Thermal shock resistanceStrengthening type

180K>300K

Identical temperature differenceStrengthening type

100K>300K

Maximum working temperatureShort time (<10h)Long time (>10h)

 500°C450°C

Optical Property:

Refractive index

nd: 1.47384

Light transmission

Thickness (mm)

2

3

4

5

6

7

8

Numerical value

92%

91%

Chemical Performance:

Water resistance

ISO719/DIN12111      HGB1         ISO720      HGA1

Acid resistance

ISO1776/DIN12116        1

Alkali resistance

ISO695/DIN52322       A2

Electrical Property:

Specific resistance  lg ρ

8.0Ωxcm at  250°C

Dielectric dissipation fraction   tan σ(1MHz   20°C)

38x10 -4

Dielectric constant

ε=4.7