青板玻璃

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  Sodalime Glass properties

  Mechanical Properties
  Density (at 20 °C/68 °F): 2.44 g/cm³
  Hardness (Moh's Scale): 6 - 7
  Knoop Hardness: 585 kg/mm2 + 20
  Modulus of Elasticity (Young's): 7.2 x 1010 Pa
  Modulus of Rigidity (Shear): 3.0 x 1010 Pa
  Bulk Modulus: 4.3 x 1010 Pa
  Poisson's Ratio: 0.22
  Specific Gravity: 2.53
  Specific Heat: 0.21
  Specific Weight: 2,483 g/cm³

  Thermal Properties

  Thermal Conductivity: 0.937 W.m/m ² °C
  Thermal Coefficient of Expansion (0/300 °C): 8.6 x 10 ^-6/°C
  Softening Point: 726°C/1340°F
  Annealing Range: 546°C/1015°F
  Strain Point: 514°C/957°F

  Optical Properties

  Refractive Index (l=435): 1.523
  (l=645)=1.513
  Optical transmission

  Chemical Properties

  Hydrolytic resistance: class 3

  Electrical Properties

  Dielectric Constant: @ 20°C E= 7.75
  Specific Resistivity: 1000 Hz 25°C - log R ohms/cm: 9.7
  100°C: 91 - 250 °C: 6.5
  60Hz 25°C: 11

   

  
  

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