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Quick Details

  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: zhenhua
  • Model Number: customization
  • Size: customization
  • Material: pyrex glass
  • Use: no limit
  • color: colorless

Packaging & Delivery

Packaging Details accordance with customers' requirement



product detaill

pryrex glass


Thermal properties


Maxiimun working temperature:


                           Short-term    500°C


                           Long-term   450°C


Viscosity of Glasses


Working point                         104dpas            1270°C


Softening point                       107.6dpas           820°C


Annealing point                       1013dpas             560°C


Strain point                           1014.5dpas           518°C


Transformation Temperature(Tg0                            525°C




 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


Density(25°C)          2.3g/cm3


Young’s Modulus     E   63kn/mm3                               JC/T678-1997


Poisson’s 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°C            3.3*10-6k-1


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


Specific Heat Capacity         Cp(20-100°C)             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 

packing picture



our workshop






                 Nantong zhenhua Optical-Electric CO.,LTD

                                  wei hua tang


welcome you order our glass we can offer the best quality and the most competitive price




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