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GL0179B/3000 3MM Borosilicate Glass Beads

  • $160.00


3MM Beads

+/- 10% variance in size (2.7-3.3)

90% in range

 

GL-0179

DATA

 Appearance

            Solid clear borosilicate glass microspheres with white color in powder form.

 

Chemical Composition (by weight)

            Silica (SiO2) ..................................    70~85%

            Boron oxide (B2O3) ......................    10~15%

            Sodium oxide (Na2O) ...................    5~10%

            Aluminum oxide (Al2O3) ...............  2~5%

           

Physical Properties

            Specific Gravity .............................   2.2 (g/ cm3)

            Bulk Density of Dry Beads…..........  1.2 g per cm3 (71 lbs/ft3)

            pH in water @ 25oC ......................    7.0

            Softening Temperature ...................  830°C

            Index of Refraction  ........................  1.47-1.48(nD)

            Coefficient of Thermal Expansion... 32 x 10-7/°C (30-300º C)

             Crush Strength (90% Survival)……. 27,210 psi using Carver Hydraulic Press


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