Hollow glass microspheres with a high strength to density ratio. Lightweight but with a strength for processing survival. Potential enhancements include high filler loading, reduced warpage/shrinkage, sandability and more.
A16/500 glass bubbles have a density of 0.16 g/cc and an isostatic crush strength of 500 psi. They have less than 1% sinkers by volume and are surface treated with methacrylato chromic chloride.
A20/1000 glass bubbles have a density of 0.2 g/cc and an isostatic crush strength of 1000 psi. They have less than 1% sinkers by volume and are surface treated with methacrylato chromic chloride.
D32/4500 glass bubbles have a density of 0.32 g/cc and an isostatic crush strength of 4500 psi. They have less than 1% sinkers by volume and are surface treated with methacrylato chromic chloride.
H20/1000 glass bubbles have a density of 0.2 g/cc and an isostatic crush strength of 1000 psi. They have less than 1% sinkers by volume and are surface treated with an epoxy silane.
3M™ Glass Bubbles K1 have a density of 0.125 g/cc and an isostatic crush strength of 250 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles
3M™ Glass Bubbles K15 have a density of 0.15 g/cc and an isostatic crush strength of 300 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
3M™ Glass Bubbles K20 have a density of 0.2 g/cc and an isostatic crush strength of 500 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
3M™ Glass Bubbles K25 have a density of 0.25 g/cc and an isostatic crush strength of 750 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
K37 glass bubbles have a density of 0.37 g/cc and an isostatic crush strength of 3000 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
3M™ Glass Bubbles K46 have a density of 0.46 g/cc and an isostatic crush strength of 6000 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
3M™ Glass Bubbles S32 have a density of 0.32 g/cc and an isostatic crush strength of 2000 psi. The S Series glass bubbles have smaller particle sizes than the K Series.
3M™ Glass Bubbles S38 have a density of 0.38 g/cc and an isostatic crush strength of 4000 psi. The S Series glass bubbles have smaller particle sizes than the K Series.
3M™ Glass Bubbles S38HS have a density of 0.38 g/cc and an isostatic crush strength of 5500 psi. The S Series glass bubbles have smaller particle sizes than the K Series. The S38HS has a higher crush strength than the S38 glass bubble.
S60 glass bubbles have a density of 0.6 g/cc and an isostatic crush strength of 10000 psi. The S Series glass bubbles have smaller particle sizes than the K Series.
