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Borosilicate Glass Solid Polished Spheres 2.2g/cc - 2.0mm to 7.0mm
Description
Precision Polished Solid Borosilicate glass spheres are available in a range of sizes from 2.0mm to 7.0mm. Additional sizes upto 55mm are available on a custom basis.
Precision Glass Spheres are often used as reference particles or calibration beads for applications that require tight tolerances.
Also available in Precision Polished Soda Lime Glass Spheres.
Classified and bulk grades of borosilicate glass spherical particles:
Solid Borosilicate Glass Microspheres
Specifications
· Diameter Tolerance: ±20um
· Roundness/Sphericity: ≤20um; >99% (Ratio of Width/Length)
· Density: 2.2g/cc+/-0.1g/cc
· Index of Refraction: 1.48
· Softening Temperature: 830°C
· Specific Thermal Conductivity: 1.14W/K-m
· Thermal Expansion: 3.2x10-6K-1 (at 20°C)
· Diellectric Strength: 30kV/mm
· Youngs-Modulus: 64GPa
· Linear Thermal Expansion: 3.3x10-6>-1 (20-300°C)