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…