3M™ Glass Bubbles S60 are engineered hollow microspheres made of soda-lime borosilicate glass with a Yes density of 0.6 g/cm³ and an isostatic crush strength of 6000 psi / 420 bar.
The S60 grade can be used as an additive in applications such as construction, electronics, and marine - really anywhere a high strength additive is needed to reduce part weight. The S series Glass Bubbles offer smaller particel size than the K series.