Tables of Material Data

Table 2: Material Data
Table 2: Material Data
Table 2: Material Data
  • Column 2: The sealing metals indicated are described in table 3.
  • Column 3: a 20-300: Mean linear coefficient of expansion in the temperature range from 20 to 300°C according to DIN 52 328.
  • Column 4: Tg: Transformation temperature according to DIN 52 324
  • Column 5: Viscosity: The indicated viscosity temperatures mark the following processing stages.
    107.6 dPas (softening temperature): Noticeable deformation of glasses under their own weight, even after short heating periods (minutes).
    104 (processing temperature): Central viscosity of the range from 103 to 105 dPas in which most processing techniques such as pressing, blowing and drawing are applied.
  • Column 7: tk100 value: Temperature at which the electrical resistivity is 108 W cm according to DIN 52 326.
  • Column 9: DZ: Dielectric constant; tan d: Dissipation factor.
  • Column 10: W: Resistance to water according to DIN ISO 719
    S: Resistance to acid according to DIN 12 116
    L: Resistance to alkaline solutions according to DIN ISO 695
    W is subdivided into 5 resistance classes, S into 4 and L into 3. The higher the class number, the lower the resistance.
Table 3: Sealing Metals
Table 3: Sealing Metals
Table 3: Sealing Metals
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