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SCHOTT Supremax® Rolled Borosilicate

 

Description:
SCHOTT Supremax® Rolled Borosilicate is almost identical in its properties to Borofloat® 33, it has slightly lower surface quality due to the rolled process. It is a versatile borosilicate glass with excellent thermal properties, chemical resistance, and good light transmission material for its thickness. Supremax® Rolled Borosilicate also maintains a low density and therefore higher transmissivity compared to that of soda lime glass.

 

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Features: Applications:
  • Large thickness range
  • Very good optical properties
  • Low thermal expansion
  • High chemical durability
  • Low density
  • High temperature windows for lighting
  • Optical windows, filters, and mirrors
  • Chemically resistant view ports
  • Bulletproof glass systems

Physical Properties:

Mechanical:
  • Density (25°C) Ρ
  • Young’s Modulus Ε
  • Poisson’s Ratio μ
  • Knoop Hardness HK0.1/20
  • Bending strength σ
2.2 g/cm3
64 kN/mm2
0.2
480
25 MPa
137.3 lb/ft3
9.28 Mpsi

 

 

3.63 x 103 psi

Viscosity:

  • Working Point (104 poises)
  • Softening Point (107.6 poises)
  • Annealing Point (1013 poises)
  • Strain Point (1014.5 poises)
1270 °C
820 °C
560 °C
518 °C
2318 °F
1508 °F
1040 °F
964 °F

Thermal Expansion:

  • 0 – 300 °C (32 – 572 °F)
3.25 x 10-6/K

Optical:

  • Index of Refraction @
435.8nm
479.9nm
546.1nm
589.3nm
643.8nm
656.3nm
1.4802
1.4768
1.4731
1.4713
1.4695
1.4692

Electrical:

  • Log10 Volume Resistivity:
(250°C, 482°F)
(350°C, 932°F)
8.0
6.5

Dimensions:

  • Thicknesses:

     

  • Sizes:
28.6mm – 66.7mm
(1 ⅛” – 2 ⅝”)
Up to 90″ x 67″

SCHOTT BSupermax

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