Alibaba express pyrex glass

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1 Piece/Pieces (Min. Order)
Supply Ability:
20000 Piece/Pieces per Month
Shanghai Port
Quick Details
Place of Origin:
Jiangsu, China (Mainland)
Brand Name:
Model Number:
many kinds of
Insulated Glass
Display Case Glass
Optical Glass
pyrex glass:
optical glass
Packaging & Delivery
Packaging Details:
According to customer 's demand
Delivery Detail:


pyrex glass:
low thermal expansion
92%light transmission
high thermal shock resis
printing available

pyrex glass:

Thermal properties

  Maxiimun working temperature: 

                           Short-term(10h)  500

                           Long-term(10h) 450

Viscosity of Glasses

Working point                          104dpas             1270

Softening point                        107.6dpas            820

Annealing point                        1013dpas             560

Strain point                           1014.5dpas            518

Transformation Temperature(Tg0                             525


 1 hour   110K

 1-100hour  90K

 100hour  80K

Glass Thickness             RTS

3.8mm                               175K

5.0-5.5mm                             160K

6.5-12.0mm                            150K

Technical Properties

Density25            2.3g/cm3

Youngs Modulus     E     63kn/mm3                                JC/T678-1997

Poissons Ratio     u     0.18                     JC/T678-1997

Bending strength           59.3MPa                  JC/T678-1997

Hardness             H     6                        GB/T16534-1996


Thermal  Properties

Coefficient of Linear Thermal   α   20-300             3.3*10-6k-1

Thermal conductivity            λ(90)                  1.2W*(M*K)-1

Specific Heat Capacity          Cp(20-100)              0.83K1*(kg*k)-1

Chemical Resistance

Hydrolytic resistance      according ISO 719/DIN 12 111      HGB  1

                       According ISO 720               HGA   1

Acid  resistance         according  ISO 1776/DIN 12 116     1

Alkali resistance          according  ISO 695/DIN 52 322     A 2

Optical  Properties

Wavelength λ(nm)     435.8     479.9      546.1      589.3      643.8       656.3

Index of Refraction n  1.48023  1.47685(nF)  1.47326(ne)  1.47145  1.46975(nc)   1.46925


Refractive index           nd(λ587.6nm)              1.47178



Panel size 1200*750mm 2000*800mm we will be happy to provide other sizes upon request


Test method: Plates of approximately 20*20cm2 are heated in an oven with recirculated air and then doused in the center with 50ml of room temperature water,at which5%of the samples suffer breakage. The plates are abraded before heating with 220 grit sandpa-per to simulate typical surface condition during practical use .