Advantages of Borosilicate Glass Microspheres in 0.03mm to 0.2mm sizing

Borosilicate Glass Microbeads

BSGMS 63-75 micron at 40x magnification

High quality glass microspheres for research and development are always in high demand.? In an effort to better serve scientists Cospheric recently added a complete line of high quality borosilicate microspheres, and microbeads.

Borosilicate glass offers? advantages over standard soda lime glass microbeads.

  • Roundness is >90%?? (Soda lime >85%)
  • Density is the lowest of most glasses at 2.2g/cc? (Soda Lime 2.5g/cc)
  • Very low thermal expansion coefficient? 32×10-7/?C?? (for 30-300?C)?? (Soda Lime:? 90×10-7/?C)

The high roundness, and low thermal expansion make borosilicate spheres an excellent candidate for use as spacers in epoxy bond lines, or other applications which require stability over a wide temperature range.

Borosilicate glass spheres are now offered in narrow size ranges from 0.03mm to 0.2mm with greater than 90% of the particles in range.

  • 27-32 micron? (0.3mm)
  • 32-38 micron (0.035mm)
  • 38-45 micron (0.04mm)
  • 45-53 micron (0.05mm)
  • 53-63 micron (0.06mm)
  • 63-75 micron (0.07mm)
  • 75-90 micron (0.08mm)
  • 90-106 micron (0.1mm)
  • 106-125 micron (0.12mm)
  • 125-150 micron (0.15mm)
  • 150-180 micron (0.18mm)
  • 180-212 micron (0.2mm)

Visit Cospheric’s solid glass microspheres product line for more details.